/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 10:30:53,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 10:30:53,424 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 10:30:53,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 10:30:53,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 10:30:53,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 10:30:53,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 10:30:53,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 10:30:53,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 10:30:53,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 10:30:53,443 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 10:30:53,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 10:30:53,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 10:30:53,444 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 10:30:53,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 10:30:53,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 10:30:53,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 10:30:53,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 10:30:53,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 10:30:53,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 10:30:53,446 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 10:30:53,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 10:30:53,446 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 10:30:53,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 10:30:53,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 10:30:53,447 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 10:30:53,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 10:30:53,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 10:30:53,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 10:30:53,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 10:30:53,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 10:30:53,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 10:30:53,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 10:30:53,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 10:30:53,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 10:30:53,448 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 10:30:53,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 10:30:53,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 10:30:53,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 10:30:53,707 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 10:30:53,708 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 10:30:53,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-08-24 10:30:54,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 10:30:54,822 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 10:30:54,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-08-24 10:30:54,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f52ff5d73/8664cc8f932e444e86a571c1f4aea98d/FLAG388b3cc8f [2023-08-24 10:30:54,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f52ff5d73/8664cc8f932e444e86a571c1f4aea98d [2023-08-24 10:30:54,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 10:30:54,841 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 10:30:54,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 10:30:54,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 10:30:54,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 10:30:54,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 10:30:54" (1/1) ... [2023-08-24 10:30:54,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8e8a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:54, skipping insertion in model container [2023-08-24 10:30:54,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 10:30:54" (1/1) ... [2023-08-24 10:30:54,860 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 10:30:54,992 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/unroll-4.wvr.c[2572,2585] [2023-08-24 10:30:55,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 10:30:55,008 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 10:30:55,039 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/unroll-4.wvr.c[2572,2585] [2023-08-24 10:30:55,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 10:30:55,053 INFO L206 MainTranslator]: Completed translation [2023-08-24 10:30:55,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55 WrapperNode [2023-08-24 10:30:55,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 10:30:55,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 10:30:55,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 10:30:55,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 10:30:55,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,097 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 158 [2023-08-24 10:30:55,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 10:30:55,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 10:30:55,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 10:30:55,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 10:30:55,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,132 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 10:30:55,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 10:30:55,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 10:30:55,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 10:30:55,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (1/1) ... [2023-08-24 10:30:55,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 10:30:55,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:30:55,161 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 10:30:55,167 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 10:30:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 10:30:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 10:30:55,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 10:30:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 10:30:55,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 10:30:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 10:30:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 10:30:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 10:30:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 10:30:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 10:30:55,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 10:30:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 10:30:55,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 10:30:55,189 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 10:30:55,278 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 10:30:55,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 10:30:55,446 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 10:30:55,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 10:30:55,452 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 10:30:55,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 10:30:55 BoogieIcfgContainer [2023-08-24 10:30:55,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 10:30:55,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 10:30:55,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 10:30:55,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 10:30:55,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 10:30:54" (1/3) ... [2023-08-24 10:30:55,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0c9f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 10:30:55, skipping insertion in model container [2023-08-24 10:30:55,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:30:55" (2/3) ... [2023-08-24 10:30:55,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0c9f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 10:30:55, skipping insertion in model container [2023-08-24 10:30:55,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 10:30:55" (3/3) ... [2023-08-24 10:30:55,458 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2023-08-24 10:30:55,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 10:30:55,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 10:30:55,470 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 10:30:55,517 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 10:30:55,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 184 transitions, 384 flow [2023-08-24 10:30:55,631 INFO L124 PetriNetUnfolderBase]: 16/182 cut-off events. [2023-08-24 10:30:55,631 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 10:30:55,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 182 events. 16/182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-24 10:30:55,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 184 transitions, 384 flow [2023-08-24 10:30:55,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 174 transitions, 360 flow [2023-08-24 10:30:55,641 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 10:30:55,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 174 transitions, 360 flow [2023-08-24 10:30:55,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 174 transitions, 360 flow [2023-08-24 10:30:55,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 174 transitions, 360 flow [2023-08-24 10:30:55,671 INFO L124 PetriNetUnfolderBase]: 16/174 cut-off events. [2023-08-24 10:30:55,672 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 10:30:55,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 16/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-24 10:30:55,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 3242 [2023-08-24 10:30:59,554 INFO L134 LiptonReduction]: Checked pairs total: 3240 [2023-08-24 10:30:59,554 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-24 10:30:59,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 10:30:59,567 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;@36e524ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 10:30:59,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 10:30:59,572 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 10:30:59,572 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-08-24 10:30:59,572 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 10:30:59,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:30:59,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:30:59,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:30:59,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:30:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash 770030937, now seen corresponding path program 1 times [2023-08-24 10:30:59,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:30:59,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600971202] [2023-08-24 10:30:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:30:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:30:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:30:59,798 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 10:30:59,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:30:59,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600971202] [2023-08-24 10:30:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600971202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:30:59,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:30:59,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 10:30:59,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117647149] [2023-08-24 10:30:59,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:30:59,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 10:30:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:30:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 10:30:59,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 10:30:59,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 393 [2023-08-24 10:30:59,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:30:59,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:30:59,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 393 [2023-08-24 10:30:59,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:30:59,865 INFO L124 PetriNetUnfolderBase]: 49/84 cut-off events. [2023-08-24 10:30:59,865 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 10:30:59,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 189 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-08-24 10:30:59,867 INFO L140 encePairwiseOnDemand]: 390/393 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-24 10:30:59,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-08-24 10:30:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 10:30:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 10:30:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-24 10:30:59,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40627650551314676 [2023-08-24 10:30:59,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-24 10:30:59,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-24 10:30:59,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:30:59,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-24 10:30:59,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:30:59,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:30:59,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:30:59,888 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 479 transitions. [2023-08-24 10:30:59,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-08-24 10:30:59,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 10:30:59,891 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-08-24 10:30:59,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-08-24 10:30:59,893 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-24 10:30:59,894 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-08-24 10:30:59,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:30:59,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:30:59,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:30:59,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 10:30:59,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:30:59,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:30:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash -350034370, now seen corresponding path program 1 times [2023-08-24 10:30:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:30:59,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519187078] [2023-08-24 10:30:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:30:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:30:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:00,046 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 10:31:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:00,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519187078] [2023-08-24 10:31:00,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519187078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:31:00,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:31:00,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 10:31:00,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193297405] [2023-08-24 10:31:00,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:31:00,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 10:31:00,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:00,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 10:31:00,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 10:31:00,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 393 [2023-08-24 10:31:00,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:00,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 393 [2023-08-24 10:31:00,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:00,080 INFO L124 PetriNetUnfolderBase]: 66/117 cut-off events. [2023-08-24 10:31:00,080 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 10:31:00,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 117 events. 66/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 314 event pairs, 9 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-08-24 10:31:00,081 INFO L140 encePairwiseOnDemand]: 389/393 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2023-08-24 10:31:00,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 125 flow [2023-08-24 10:31:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 10:31:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 10:31:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-24 10:31:00,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986429177268872 [2023-08-24 10:31:00,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-24 10:31:00,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-24 10:31:00,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:00,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-24 10:31:00,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,088 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 470 transitions. [2023-08-24 10:31:00,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 125 flow [2023-08-24 10:31:00,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 121 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 10:31:00,088 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2023-08-24 10:31:00,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2023-08-24 10:31:00,089 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-08-24 10:31:00,089 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2023-08-24 10:31:00,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:00,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:00,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 10:31:00,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:00,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:00,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1071676386, now seen corresponding path program 1 times [2023-08-24 10:31:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:00,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409469014] [2023-08-24 10:31:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:00,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409469014] [2023-08-24 10:31:00,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409469014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:31:00,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:31:00,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 10:31:00,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794070018] [2023-08-24 10:31:00,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:31:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 10:31:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:00,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 10:31:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 10:31:00,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 393 [2023-08-24 10:31:00,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:00,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 393 [2023-08-24 10:31:00,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:00,244 INFO L124 PetriNetUnfolderBase]: 74/143 cut-off events. [2023-08-24 10:31:00,244 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-24 10:31:00,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 143 events. 74/143 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 467 event pairs, 15 based on Foata normal form. 8/150 useless extension candidates. Maximal degree in co-relation 330. Up to 83 conditions per place. [2023-08-24 10:31:00,246 INFO L140 encePairwiseOnDemand]: 389/393 looper letters, 29 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-08-24 10:31:00,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 36 transitions, 180 flow [2023-08-24 10:31:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 10:31:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 10:31:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 656 transitions. [2023-08-24 10:31:00,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173027989821883 [2023-08-24 10:31:00,248 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 656 transitions. [2023-08-24 10:31:00,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 656 transitions. [2023-08-24 10:31:00,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:00,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 656 transitions. [2023-08-24 10:31:00,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:00,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:00,253 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 4 states and 656 transitions. [2023-08-24 10:31:00,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 36 transitions, 180 flow [2023-08-24 10:31:00,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 36 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 10:31:00,254 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 89 flow [2023-08-24 10:31:00,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-24 10:31:00,255 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-08-24 10:31:00,257 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 89 flow [2023-08-24 10:31:00,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:00,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:00,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 10:31:00,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:00,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:00,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1651372047, now seen corresponding path program 1 times [2023-08-24 10:31:00,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:00,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706562633] [2023-08-24 10:31:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:00,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:00,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:00,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706562633] [2023-08-24 10:31:00,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706562633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:31:00,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:31:00,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 10:31:00,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766768295] [2023-08-24 10:31:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:31:00,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 10:31:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 10:31:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 10:31:00,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 393 [2023-08-24 10:31:00,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:00,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 393 [2023-08-24 10:31:00,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:00,373 INFO L124 PetriNetUnfolderBase]: 78/157 cut-off events. [2023-08-24 10:31:00,373 INFO L125 PetriNetUnfolderBase]: For 139/154 co-relation queries the response was YES. [2023-08-24 10:31:00,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 157 events. 78/157 cut-off events. For 139/154 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 534 event pairs, 29 based on Foata normal form. 19/175 useless extension candidates. Maximal degree in co-relation 432. Up to 102 conditions per place. [2023-08-24 10:31:00,377 INFO L140 encePairwiseOnDemand]: 389/393 looper letters, 31 selfloop transitions, 4 changer transitions 2/38 dead transitions. [2023-08-24 10:31:00,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 225 flow [2023-08-24 10:31:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 10:31:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 10:31:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2023-08-24 10:31:00,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40076335877862596 [2023-08-24 10:31:00,379 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2023-08-24 10:31:00,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2023-08-24 10:31:00,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:00,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2023-08-24 10:31:00,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:00,383 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:00,383 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 89 flow. Second operand 4 states and 630 transitions. [2023-08-24 10:31:00,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 225 flow [2023-08-24 10:31:00,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 215 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 10:31:00,385 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 111 flow [2023-08-24 10:31:00,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-24 10:31:00,387 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-08-24 10:31:00,387 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 111 flow [2023-08-24 10:31:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:00,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 10:31:00,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:00,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -666442885, now seen corresponding path program 2 times [2023-08-24 10:31:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:00,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290363859] [2023-08-24 10:31:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:00,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:00,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290363859] [2023-08-24 10:31:00,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290363859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693532369] [2023-08-24 10:31:00,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 10:31:00,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:00,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:00,511 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 10:31:00,541 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 10:31:00,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 10:31:00,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:00,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-24 10:31:00,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:00,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 10:31:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693532369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:31:00,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 10:31:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-24 10:31:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856842179] [2023-08-24 10:31:00,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:31:00,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 10:31:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 10:31:00,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 10:31:00,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 393 [2023-08-24 10:31:00,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:00,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 393 [2023-08-24 10:31:00,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:00,755 INFO L124 PetriNetUnfolderBase]: 86/171 cut-off events. [2023-08-24 10:31:00,755 INFO L125 PetriNetUnfolderBase]: For 220/235 co-relation queries the response was YES. [2023-08-24 10:31:00,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 171 events. 86/171 cut-off events. For 220/235 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 555 event pairs, 31 based on Foata normal form. 21/191 useless extension candidates. Maximal degree in co-relation 560. Up to 114 conditions per place. [2023-08-24 10:31:00,757 INFO L140 encePairwiseOnDemand]: 389/393 looper letters, 29 selfloop transitions, 4 changer transitions 5/39 dead transitions. [2023-08-24 10:31:00,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 247 flow [2023-08-24 10:31:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 10:31:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 10:31:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 634 transitions. [2023-08-24 10:31:00,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033078880407125 [2023-08-24 10:31:00,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 634 transitions. [2023-08-24 10:31:00,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 634 transitions. [2023-08-24 10:31:00,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:00,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 634 transitions. [2023-08-24 10:31:00,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.5) internal successors, (634), 4 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:00,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:00,763 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 111 flow. Second operand 4 states and 634 transitions. [2023-08-24 10:31:00,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 247 flow [2023-08-24 10:31:00,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 236 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 10:31:00,766 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 134 flow [2023-08-24 10:31:00,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-24 10:31:00,768 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-08-24 10:31:00,768 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 134 flow [2023-08-24 10:31:00,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:00,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:00,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:00,780 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 10:31:00,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:00,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:00,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:00,970 INFO L85 PathProgramCache]: Analyzing trace with hash -665304319, now seen corresponding path program 3 times [2023-08-24 10:31:00,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156574033] [2023-08-24 10:31:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:00,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:01,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:01,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156574033] [2023-08-24 10:31:01,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156574033] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:01,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22528972] [2023-08-24 10:31:01,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 10:31:01,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:01,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:01,038 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 10:31:01,040 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 10:31:01,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 10:31:01,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:01,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-24 10:31:01,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:01,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 10:31:01,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22528972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:31:01,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 10:31:01,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-24 10:31:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300517122] [2023-08-24 10:31:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:31:01,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 10:31:01,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 10:31:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 10:31:01,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 393 [2023-08-24 10:31:01,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:01,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 393 [2023-08-24 10:31:01,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:01,208 INFO L124 PetriNetUnfolderBase]: 88/171 cut-off events. [2023-08-24 10:31:01,208 INFO L125 PetriNetUnfolderBase]: For 362/377 co-relation queries the response was YES. [2023-08-24 10:31:01,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 171 events. 88/171 cut-off events. For 362/377 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 568 event pairs, 29 based on Foata normal form. 21/191 useless extension candidates. Maximal degree in co-relation 599. Up to 114 conditions per place. [2023-08-24 10:31:01,209 INFO L140 encePairwiseOnDemand]: 389/393 looper letters, 28 selfloop transitions, 8 changer transitions 3/40 dead transitions. [2023-08-24 10:31:01,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 278 flow [2023-08-24 10:31:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 10:31:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 10:31:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-24 10:31:01,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013994910941476 [2023-08-24 10:31:01,210 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-24 10:31:01,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-24 10:31:01,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:01,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-24 10:31:01,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:01,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:01,214 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 134 flow. Second operand 4 states and 631 transitions. [2023-08-24 10:31:01,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 278 flow [2023-08-24 10:31:01,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 265 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-24 10:31:01,215 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 168 flow [2023-08-24 10:31:01,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-24 10:31:01,216 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 16 predicate places. [2023-08-24 10:31:01,216 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 168 flow [2023-08-24 10:31:01,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:01,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:01,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 10:31:01,421 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,SelfDestructingSolverStorable5 [2023-08-24 10:31:01,421 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:01,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1780379826, now seen corresponding path program 2 times [2023-08-24 10:31:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:01,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106667886] [2023-08-24 10:31:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:01,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106667886] [2023-08-24 10:31:01,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106667886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926121097] [2023-08-24 10:31:01,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 10:31:01,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:01,533 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 10:31:01,535 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 10:31:01,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 10:31:01,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:01,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 10:31:01,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:01,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 10:31:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926121097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:31:01,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 10:31:01,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-08-24 10:31:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963768323] [2023-08-24 10:31:01,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:31:01,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 10:31:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 10:31:01,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-24 10:31:01,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 393 [2023-08-24 10:31:01,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:01,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 393 [2023-08-24 10:31:01,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:01,726 INFO L124 PetriNetUnfolderBase]: 102/191 cut-off events. [2023-08-24 10:31:01,727 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-08-24 10:31:01,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 191 events. 102/191 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 580 event pairs, 18 based on Foata normal form. 4/194 useless extension candidates. Maximal degree in co-relation 702. Up to 108 conditions per place. [2023-08-24 10:31:01,728 INFO L140 encePairwiseOnDemand]: 388/393 looper letters, 33 selfloop transitions, 10 changer transitions 6/49 dead transitions. [2023-08-24 10:31:01,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 342 flow [2023-08-24 10:31:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 10:31:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 10:31:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 926 transitions. [2023-08-24 10:31:01,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3927056827820187 [2023-08-24 10:31:01,730 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 926 transitions. [2023-08-24 10:31:01,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 926 transitions. [2023-08-24 10:31:01,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:01,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 926 transitions. [2023-08-24 10:31:01,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 393.0) internal successors, (2751), 7 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 393.0) internal successors, (2751), 7 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,734 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 168 flow. Second operand 6 states and 926 transitions. [2023-08-24 10:31:01,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 342 flow [2023-08-24 10:31:01,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 322 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-24 10:31:01,736 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 192 flow [2023-08-24 10:31:01,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-24 10:31:01,736 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 19 predicate places. [2023-08-24 10:31:01,736 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 192 flow [2023-08-24 10:31:01,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:01,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:01,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:01,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 10:31:01,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:01,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:01,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1096206974, now seen corresponding path program 3 times [2023-08-24 10:31:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:01,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239364489] [2023-08-24 10:31:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:02,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239364489] [2023-08-24 10:31:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239364489] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465006307] [2023-08-24 10:31:02,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 10:31:02,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:02,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:02,101 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 10:31:02,103 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 10:31:02,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 10:31:02,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:02,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-24 10:31:02,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:02,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 10:31:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465006307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:31:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 10:31:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-08-24 10:31:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497825362] [2023-08-24 10:31:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:31:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 10:31:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 10:31:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-24 10:31:02,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 393 [2023-08-24 10:31:02,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:02,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:02,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 393 [2023-08-24 10:31:02,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:02,246 INFO L124 PetriNetUnfolderBase]: 87/158 cut-off events. [2023-08-24 10:31:02,246 INFO L125 PetriNetUnfolderBase]: For 476/498 co-relation queries the response was YES. [2023-08-24 10:31:02,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 158 events. 87/158 cut-off events. For 476/498 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 472 event pairs, 24 based on Foata normal form. 17/171 useless extension candidates. Maximal degree in co-relation 614. Up to 117 conditions per place. [2023-08-24 10:31:02,247 INFO L140 encePairwiseOnDemand]: 389/393 looper letters, 28 selfloop transitions, 9 changer transitions 3/42 dead transitions. [2023-08-24 10:31:02,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 330 flow [2023-08-24 10:31:02,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 10:31:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 10:31:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 654 transitions. [2023-08-24 10:31:02,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41603053435114506 [2023-08-24 10:31:02,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 654 transitions. [2023-08-24 10:31:02,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 654 transitions. [2023-08-24 10:31:02,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:02,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 654 transitions. [2023-08-24 10:31:02,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:02,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:02,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 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 10:31:02,252 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 192 flow. Second operand 4 states and 654 transitions. [2023-08-24 10:31:02,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 330 flow [2023-08-24 10:31:02,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 301 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-24 10:31:02,253 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 214 flow [2023-08-24 10:31:02,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-24 10:31:02,254 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-08-24 10:31:02,254 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 214 flow [2023-08-24 10:31:02,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:02,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:02,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:02,261 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 10:31:02,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:02,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:02,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1158645459, now seen corresponding path program 1 times [2023-08-24 10:31:02,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:02,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263983461] [2023-08-24 10:31:02,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:02,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:02,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263983461] [2023-08-24 10:31:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263983461] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867376916] [2023-08-24 10:31:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:02,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:02,539 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 10:31:02,541 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 10:31:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:02,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-24 10:31:02,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:02,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 10:31:02,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 10:31:02,780 INFO L322 Elim1Store]: treesize reduction 21, result has 57.1 percent of original size [2023-08-24 10:31:02,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 55 [2023-08-24 10:31:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:02,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:02,952 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:02,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 202 treesize of output 234 [2023-08-24 10:31:02,988 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:02,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 106 [2023-08-24 10:31:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:03,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867376916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:03,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:03,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2023-08-24 10:31:03,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279944571] [2023-08-24 10:31:03,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:03,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 10:31:03,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:03,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 10:31:03,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=167, Unknown=3, NotChecked=0, Total=210 [2023-08-24 10:31:03,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 393 [2023-08-24 10:31:03,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 214 flow. Second operand has 15 states, 15 states have (on average 110.73333333333333) internal successors, (1661), 15 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:03,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:03,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 393 [2023-08-24 10:31:03,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:03,823 INFO L124 PetriNetUnfolderBase]: 221/392 cut-off events. [2023-08-24 10:31:03,823 INFO L125 PetriNetUnfolderBase]: For 828/858 co-relation queries the response was YES. [2023-08-24 10:31:03,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 392 events. 221/392 cut-off events. For 828/858 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1483 event pairs, 16 based on Foata normal form. 44/430 useless extension candidates. Maximal degree in co-relation 1182. Up to 189 conditions per place. [2023-08-24 10:31:03,825 INFO L140 encePairwiseOnDemand]: 385/393 looper letters, 36 selfloop transitions, 15 changer transitions 60/113 dead transitions. [2023-08-24 10:31:03,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 113 transitions, 864 flow [2023-08-24 10:31:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 10:31:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 10:31:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2044 transitions. [2023-08-24 10:31:03,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2889454339836019 [2023-08-24 10:31:03,830 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2044 transitions. [2023-08-24 10:31:03,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2044 transitions. [2023-08-24 10:31:03,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:03,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2044 transitions. [2023-08-24 10:31:03,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 113.55555555555556) internal successors, (2044), 18 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:03,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 393.0) internal successors, (7467), 19 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:03,840 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 393.0) internal successors, (7467), 19 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:03,840 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 214 flow. Second operand 18 states and 2044 transitions. [2023-08-24 10:31:03,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 113 transitions, 864 flow [2023-08-24 10:31:03,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 113 transitions, 828 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-24 10:31:03,843 INFO L231 Difference]: Finished difference. Result has 61 places, 35 transitions, 288 flow [2023-08-24 10:31:03,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=288, PETRI_PLACES=61, PETRI_TRANSITIONS=35} [2023-08-24 10:31:03,843 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 40 predicate places. [2023-08-24 10:31:03,844 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 35 transitions, 288 flow [2023-08-24 10:31:03,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.73333333333333) internal successors, (1661), 15 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:03,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:03,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:03,849 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 10:31:04,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:04,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:04,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1840466823, now seen corresponding path program 2 times [2023-08-24 10:31:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648842738] [2023-08-24 10:31:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 10:31:04,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:04,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648842738] [2023-08-24 10:31:04,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648842738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:04,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749239949] [2023-08-24 10:31:04,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 10:31:04,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:04,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:04,144 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 10:31:04,146 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 10:31:04,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 10:31:04,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:04,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-24 10:31:04,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:04,405 INFO L322 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2023-08-24 10:31:04,406 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 48 [2023-08-24 10:31:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:04,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:04,682 INFO L322 Elim1Store]: treesize reduction 10, result has 93.5 percent of original size [2023-08-24 10:31:04,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 166 treesize of output 196 [2023-08-24 10:31:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:05,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749239949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:05,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:05,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 19 [2023-08-24 10:31:05,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524065439] [2023-08-24 10:31:05,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:05,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-24 10:31:05,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:05,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-24 10:31:05,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-08-24 10:31:05,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 393 [2023-08-24 10:31:05,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 35 transitions, 288 flow. Second operand has 19 states, 19 states have (on average 114.78947368421052) internal successors, (2181), 19 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:05,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:05,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 393 [2023-08-24 10:31:05,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:05,626 INFO L124 PetriNetUnfolderBase]: 154/273 cut-off events. [2023-08-24 10:31:05,627 INFO L125 PetriNetUnfolderBase]: For 1026/1050 co-relation queries the response was YES. [2023-08-24 10:31:05,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 273 events. 154/273 cut-off events. For 1026/1050 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 886 event pairs, 4 based on Foata normal form. 36/307 useless extension candidates. Maximal degree in co-relation 1398. Up to 143 conditions per place. [2023-08-24 10:31:05,629 INFO L140 encePairwiseOnDemand]: 385/393 looper letters, 58 selfloop transitions, 32 changer transitions 0/92 dead transitions. [2023-08-24 10:31:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 811 flow [2023-08-24 10:31:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 10:31:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 10:31:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1868 transitions. [2023-08-24 10:31:05,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2970737913486005 [2023-08-24 10:31:05,633 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1868 transitions. [2023-08-24 10:31:05,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1868 transitions. [2023-08-24 10:31:05,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:05,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1868 transitions. [2023-08-24 10:31:05,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 116.75) internal successors, (1868), 16 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 10:31:05,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 393.0) internal successors, (6681), 17 states have internal predecessors, (6681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:05,643 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 393.0) internal successors, (6681), 17 states have internal predecessors, (6681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:05,643 INFO L175 Difference]: Start difference. First operand has 61 places, 35 transitions, 288 flow. Second operand 16 states and 1868 transitions. [2023-08-24 10:31:05,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 811 flow [2023-08-24 10:31:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 708 flow, removed 28 selfloop flow, removed 9 redundant places. [2023-08-24 10:31:05,646 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 473 flow [2023-08-24 10:31:05,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=473, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-08-24 10:31:05,647 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 41 predicate places. [2023-08-24 10:31:05,647 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 473 flow [2023-08-24 10:31:05,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 114.78947368421052) internal successors, (2181), 19 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:05,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:05,648 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:05,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-24 10:31:05,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:05,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:05,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1188802548, now seen corresponding path program 3 times [2023-08-24 10:31:05,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:05,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277120028] [2023-08-24 10:31:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:05,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 10:31:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277120028] [2023-08-24 10:31:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277120028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:06,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366841361] [2023-08-24 10:31:06,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 10:31:06,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:06,129 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 10:31:06,130 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 10:31:06,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 10:31:06,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:06,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 10:31:06,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 10:31:06,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 10:31:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366841361] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:06,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2023-08-24 10:31:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682943445] [2023-08-24 10:31:06,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:06,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 10:31:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 10:31:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-08-24 10:31:06,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 393 [2023-08-24 10:31:06,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 473 flow. Second operand has 15 states, 15 states have (on average 149.2) internal successors, (2238), 15 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 393 [2023-08-24 10:31:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:07,344 INFO L124 PetriNetUnfolderBase]: 357/621 cut-off events. [2023-08-24 10:31:07,345 INFO L125 PetriNetUnfolderBase]: For 2353/2353 co-relation queries the response was YES. [2023-08-24 10:31:07,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3307 conditions, 621 events. 357/621 cut-off events. For 2353/2353 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2355 event pairs, 40 based on Foata normal form. 60/679 useless extension candidates. Maximal degree in co-relation 3097. Up to 317 conditions per place. [2023-08-24 10:31:07,349 INFO L140 encePairwiseOnDemand]: 388/393 looper letters, 115 selfloop transitions, 51 changer transitions 0/166 dead transitions. [2023-08-24 10:31:07,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 166 transitions, 1665 flow [2023-08-24 10:31:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 10:31:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 10:31:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2759 transitions. [2023-08-24 10:31:07,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900197907831496 [2023-08-24 10:31:07,354 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2759 transitions. [2023-08-24 10:31:07,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2759 transitions. [2023-08-24 10:31:07,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:07,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2759 transitions. [2023-08-24 10:31:07,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.27777777777777) internal successors, (2759), 18 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:07,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 393.0) internal successors, (7467), 19 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:07,373 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 393.0) internal successors, (7467), 19 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:07,373 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 473 flow. Second operand 18 states and 2759 transitions. [2023-08-24 10:31:07,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 166 transitions, 1665 flow [2023-08-24 10:31:07,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 166 transitions, 1505 flow, removed 53 selfloop flow, removed 8 redundant places. [2023-08-24 10:31:07,379 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 879 flow [2023-08-24 10:31:07,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=879, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2023-08-24 10:31:07,379 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 61 predicate places. [2023-08-24 10:31:07,379 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 879 flow [2023-08-24 10:31:07,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.2) internal successors, (2238), 15 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:07,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:07,380 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:07,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 10:31:07,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:07,591 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:07,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1744799297, now seen corresponding path program 4 times [2023-08-24 10:31:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:07,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631478771] [2023-08-24 10:31:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:08,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:08,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631478771] [2023-08-24 10:31:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631478771] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:08,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430194311] [2023-08-24 10:31:08,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 10:31:08,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:08,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:08,997 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 10:31:08,999 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 10:31:09,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 10:31:09,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:09,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-24 10:31:09,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:09,258 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:09,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-08-24 10:31:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:09,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:09,670 INFO L322 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-08-24 10:31:09,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-08-24 10:31:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 10:31:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430194311] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:10,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:10,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 5] total 21 [2023-08-24 10:31:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944506155] [2023-08-24 10:31:10,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:10,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 10:31:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 10:31:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-08-24 10:31:10,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 393 [2023-08-24 10:31:10,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 879 flow. Second operand has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:10,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:10,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 393 [2023-08-24 10:31:10,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:11,256 INFO L124 PetriNetUnfolderBase]: 754/1334 cut-off events. [2023-08-24 10:31:11,256 INFO L125 PetriNetUnfolderBase]: For 9618/9655 co-relation queries the response was YES. [2023-08-24 10:31:11,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8290 conditions, 1334 events. 754/1334 cut-off events. For 9618/9655 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6220 event pairs, 76 based on Foata normal form. 33/1358 useless extension candidates. Maximal degree in co-relation 7074. Up to 643 conditions per place. [2023-08-24 10:31:11,266 INFO L140 encePairwiseOnDemand]: 386/393 looper letters, 129 selfloop transitions, 112 changer transitions 5/254 dead transitions. [2023-08-24 10:31:11,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 254 transitions, 3027 flow [2023-08-24 10:31:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 10:31:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 10:31:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2954 transitions. [2023-08-24 10:31:11,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3268060626175462 [2023-08-24 10:31:11,273 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2954 transitions. [2023-08-24 10:31:11,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2954 transitions. [2023-08-24 10:31:11,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:11,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2954 transitions. [2023-08-24 10:31:11,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 128.43478260869566) internal successors, (2954), 23 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:11,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:11,287 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:11,287 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 879 flow. Second operand 23 states and 2954 transitions. [2023-08-24 10:31:11,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 254 transitions, 3027 flow [2023-08-24 10:31:11,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 254 transitions, 2623 flow, removed 192 selfloop flow, removed 2 redundant places. [2023-08-24 10:31:11,309 INFO L231 Difference]: Finished difference. Result has 106 places, 171 transitions, 2042 flow [2023-08-24 10:31:11,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2042, PETRI_PLACES=106, PETRI_TRANSITIONS=171} [2023-08-24 10:31:11,310 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 85 predicate places. [2023-08-24 10:31:11,310 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 171 transitions, 2042 flow [2023-08-24 10:31:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:11,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:11,311 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:11,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 10:31:11,515 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,SelfDestructingSolverStorable11 [2023-08-24 10:31:11,518 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:11,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1841245837, now seen corresponding path program 5 times [2023-08-24 10:31:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:11,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610563274] [2023-08-24 10:31:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:13,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:13,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610563274] [2023-08-24 10:31:13,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610563274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:13,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545286225] [2023-08-24 10:31:13,250 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 10:31:13,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:13,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:13,251 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 10:31:13,253 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 10:31:13,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 10:31:13,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:13,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-24 10:31:13,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:13,725 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 10:31:13,818 INFO L322 Elim1Store]: treesize reduction 162, result has 30.2 percent of original size [2023-08-24 10:31:13,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 151 treesize of output 124 [2023-08-24 10:31:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:13,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:14,451 INFO L322 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-08-24 10:31:14,452 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 198 treesize of output 322 [2023-08-24 10:31:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:17,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545286225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:17,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-08-24 10:31:17,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230170638] [2023-08-24 10:31:17,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:17,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 10:31:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 10:31:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2023-08-24 10:31:17,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 393 [2023-08-24 10:31:17,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 171 transitions, 2042 flow. Second operand has 29 states, 29 states have (on average 105.72413793103448) internal successors, (3066), 29 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:17,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:17,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 393 [2023-08-24 10:31:17,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:19,542 INFO L124 PetriNetUnfolderBase]: 1278/2246 cut-off events. [2023-08-24 10:31:19,542 INFO L125 PetriNetUnfolderBase]: For 17484/17508 co-relation queries the response was YES. [2023-08-24 10:31:19,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13552 conditions, 2246 events. 1278/2246 cut-off events. For 17484/17508 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11820 event pairs, 151 based on Foata normal form. 17/2258 useless extension candidates. Maximal degree in co-relation 12129. Up to 1248 conditions per place. [2023-08-24 10:31:19,557 INFO L140 encePairwiseOnDemand]: 385/393 looper letters, 179 selfloop transitions, 150 changer transitions 2/334 dead transitions. [2023-08-24 10:31:19,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 334 transitions, 4305 flow [2023-08-24 10:31:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 10:31:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 10:31:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2433 transitions. [2023-08-24 10:31:19,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28140180430256767 [2023-08-24 10:31:19,564 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2433 transitions. [2023-08-24 10:31:19,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2433 transitions. [2023-08-24 10:31:19,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:19,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2433 transitions. [2023-08-24 10:31:19,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 110.5909090909091) internal successors, (2433), 22 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:19,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 393.0) internal successors, (9039), 23 states have internal predecessors, (9039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:19,577 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 393.0) internal successors, (9039), 23 states have internal predecessors, (9039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:19,577 INFO L175 Difference]: Start difference. First operand has 106 places, 171 transitions, 2042 flow. Second operand 22 states and 2433 transitions. [2023-08-24 10:31:19,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 334 transitions, 4305 flow [2023-08-24 10:31:19,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 334 transitions, 3801 flow, removed 245 selfloop flow, removed 4 redundant places. [2023-08-24 10:31:19,617 INFO L231 Difference]: Finished difference. Result has 130 places, 256 transitions, 3237 flow [2023-08-24 10:31:19,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3237, PETRI_PLACES=130, PETRI_TRANSITIONS=256} [2023-08-24 10:31:19,618 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 109 predicate places. [2023-08-24 10:31:19,618 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 256 transitions, 3237 flow [2023-08-24 10:31:19,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 105.72413793103448) internal successors, (3066), 29 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:19,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:19,619 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:19,623 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 10:31:19,823 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,SelfDestructingSolverStorable12 [2023-08-24 10:31:19,823 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:19,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash 477086457, now seen corresponding path program 6 times [2023-08-24 10:31:19,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:19,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844516796] [2023-08-24 10:31:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:19,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:21,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:21,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844516796] [2023-08-24 10:31:21,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844516796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:21,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900075743] [2023-08-24 10:31:21,032 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 10:31:21,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:21,033 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 10:31:21,056 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 10:31:21,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 10:31:21,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:21,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-24 10:31:21,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:21,290 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:21,291 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-08-24 10:31:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:21,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:21,693 INFO L322 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-08-24 10:31:21,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-08-24 10:31:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 10:31:22,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900075743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:22,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:22,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 20 [2023-08-24 10:31:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122196124] [2023-08-24 10:31:22,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:22,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 10:31:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 10:31:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-08-24 10:31:22,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 393 [2023-08-24 10:31:22,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 256 transitions, 3237 flow. Second operand has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:22,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:22,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 393 [2023-08-24 10:31:22,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:23,349 INFO L124 PetriNetUnfolderBase]: 1939/3416 cut-off events. [2023-08-24 10:31:23,350 INFO L125 PetriNetUnfolderBase]: For 25953/25994 co-relation queries the response was YES. [2023-08-24 10:31:23,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20321 conditions, 3416 events. 1939/3416 cut-off events. For 25953/25994 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20174 event pairs, 317 based on Foata normal form. 31/3436 useless extension candidates. Maximal degree in co-relation 18373. Up to 2185 conditions per place. [2023-08-24 10:31:23,373 INFO L140 encePairwiseOnDemand]: 386/393 looper letters, 268 selfloop transitions, 160 changer transitions 9/446 dead transitions. [2023-08-24 10:31:23,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 446 transitions, 6052 flow [2023-08-24 10:31:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 10:31:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 10:31:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3064 transitions. [2023-08-24 10:31:23,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3248515691263783 [2023-08-24 10:31:23,380 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3064 transitions. [2023-08-24 10:31:23,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3064 transitions. [2023-08-24 10:31:23,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:23,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3064 transitions. [2023-08-24 10:31:23,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 127.66666666666667) internal successors, (3064), 24 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:23,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:23,391 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:23,391 INFO L175 Difference]: Start difference. First operand has 130 places, 256 transitions, 3237 flow. Second operand 24 states and 3064 transitions. [2023-08-24 10:31:23,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 446 transitions, 6052 flow [2023-08-24 10:31:23,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 446 transitions, 5657 flow, removed 174 selfloop flow, removed 8 redundant places. [2023-08-24 10:31:23,465 INFO L231 Difference]: Finished difference. Result has 155 places, 370 transitions, 4992 flow [2023-08-24 10:31:23,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4992, PETRI_PLACES=155, PETRI_TRANSITIONS=370} [2023-08-24 10:31:23,466 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 134 predicate places. [2023-08-24 10:31:23,466 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 370 transitions, 4992 flow [2023-08-24 10:31:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:23,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:23,467 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:23,475 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 10:31:23,672 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,SelfDestructingSolverStorable13 [2023-08-24 10:31:23,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:23,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash -175776831, now seen corresponding path program 7 times [2023-08-24 10:31:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189819709] [2023-08-24 10:31:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:23,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:24,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:24,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189819709] [2023-08-24 10:31:24,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189819709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:24,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840897798] [2023-08-24 10:31:24,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 10:31:24,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:24,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:24,828 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 10:31:24,829 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 10:31:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:24,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-24 10:31:24,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:25,092 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:25,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-08-24 10:31:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:25,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:25,471 INFO L322 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-08-24 10:31:25,471 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-08-24 10:31:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 10:31:25,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840897798] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:25,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:25,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 5] total 21 [2023-08-24 10:31:25,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503987812] [2023-08-24 10:31:25,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 10:31:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 10:31:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-08-24 10:31:25,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 393 [2023-08-24 10:31:25,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 370 transitions, 4992 flow. Second operand has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:25,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:25,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 393 [2023-08-24 10:31:25,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:27,414 INFO L124 PetriNetUnfolderBase]: 2545/4492 cut-off events. [2023-08-24 10:31:27,414 INFO L125 PetriNetUnfolderBase]: For 35763/35804 co-relation queries the response was YES. [2023-08-24 10:31:27,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27565 conditions, 4492 events. 2545/4492 cut-off events. For 35763/35804 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 27704 event pairs, 515 based on Foata normal form. 33/4516 useless extension candidates. Maximal degree in co-relation 25468. Up to 2866 conditions per place. [2023-08-24 10:31:27,443 INFO L140 encePairwiseOnDemand]: 386/393 looper letters, 375 selfloop transitions, 147 changer transitions 5/536 dead transitions. [2023-08-24 10:31:27,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 536 transitions, 7871 flow [2023-08-24 10:31:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 10:31:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 10:31:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3063 transitions. [2023-08-24 10:31:27,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32474554707379133 [2023-08-24 10:31:27,447 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3063 transitions. [2023-08-24 10:31:27,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3063 transitions. [2023-08-24 10:31:27,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:27,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3063 transitions. [2023-08-24 10:31:27,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 127.625) internal successors, (3063), 24 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:27,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:27,456 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:27,456 INFO L175 Difference]: Start difference. First operand has 155 places, 370 transitions, 4992 flow. Second operand 24 states and 3063 transitions. [2023-08-24 10:31:27,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 536 transitions, 7871 flow [2023-08-24 10:31:27,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 536 transitions, 7548 flow, removed 137 selfloop flow, removed 9 redundant places. [2023-08-24 10:31:27,577 INFO L231 Difference]: Finished difference. Result has 177 places, 443 transitions, 6406 flow [2023-08-24 10:31:27,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=4707, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6406, PETRI_PLACES=177, PETRI_TRANSITIONS=443} [2023-08-24 10:31:27,578 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 156 predicate places. [2023-08-24 10:31:27,578 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 443 transitions, 6406 flow [2023-08-24 10:31:27,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:27,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:27,578 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:27,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 10:31:27,783 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,SelfDestructingSolverStorable14 [2023-08-24 10:31:27,784 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:27,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1314406329, now seen corresponding path program 8 times [2023-08-24 10:31:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283619663] [2023-08-24 10:31:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:29,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283619663] [2023-08-24 10:31:29,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283619663] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:29,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089293835] [2023-08-24 10:31:29,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 10:31:29,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:29,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:29,255 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 10:31:29,256 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 10:31:29,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 10:31:29,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:29,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-24 10:31:29,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:29,523 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:29,524 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-08-24 10:31:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 10:31:29,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:29,900 INFO L322 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-08-24 10:31:29,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-08-24 10:31:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 10:31:30,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089293835] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 10:31:30,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 10:31:30,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 5] total 21 [2023-08-24 10:31:30,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015937729] [2023-08-24 10:31:30,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 10:31:30,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 10:31:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:31:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 10:31:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-08-24 10:31:30,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-08-24 10:31:30,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 443 transitions, 6406 flow. Second operand has 23 states, 23 states have (on average 117.0) internal successors, (2691), 23 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:30,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:31:30,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-08-24 10:31:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:31:32,226 INFO L124 PetriNetUnfolderBase]: 3151/5587 cut-off events. [2023-08-24 10:31:32,226 INFO L125 PetriNetUnfolderBase]: For 48393/48438 co-relation queries the response was YES. [2023-08-24 10:31:32,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35214 conditions, 5587 events. 3151/5587 cut-off events. For 48393/48438 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 35615 event pairs, 753 based on Foata normal form. 44/5622 useless extension candidates. Maximal degree in co-relation 33242. Up to 4082 conditions per place. [2023-08-24 10:31:32,258 INFO L140 encePairwiseOnDemand]: 387/393 looper letters, 485 selfloop transitions, 105 changer transitions 5/604 dead transitions. [2023-08-24 10:31:32,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 604 transitions, 9620 flow [2023-08-24 10:31:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 10:31:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 10:31:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2774 transitions. [2023-08-24 10:31:32,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.306892355349043 [2023-08-24 10:31:32,261 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2774 transitions. [2023-08-24 10:31:32,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2774 transitions. [2023-08-24 10:31:32,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:31:32,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2774 transitions. [2023-08-24 10:31:32,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 120.6086956521739) internal successors, (2774), 23 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:32,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:32,269 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:32,269 INFO L175 Difference]: Start difference. First operand has 177 places, 443 transitions, 6406 flow. Second operand 23 states and 2774 transitions. [2023-08-24 10:31:32,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 604 transitions, 9620 flow [2023-08-24 10:31:32,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 604 transitions, 9089 flow, removed 238 selfloop flow, removed 10 redundant places. [2023-08-24 10:31:32,431 INFO L231 Difference]: Finished difference. Result has 193 places, 507 transitions, 7600 flow [2023-08-24 10:31:32,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=6005, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7600, PETRI_PLACES=193, PETRI_TRANSITIONS=507} [2023-08-24 10:31:32,432 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 172 predicate places. [2023-08-24 10:31:32,432 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 507 transitions, 7600 flow [2023-08-24 10:31:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 117.0) internal successors, (2691), 23 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:31:32,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:31:32,433 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:31:32,441 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 10:31:32,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-24 10:31:32,638 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 10:31:32,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:31:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1239860947, now seen corresponding path program 9 times [2023-08-24 10:31:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:31:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559528227] [2023-08-24 10:31:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:31:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:31:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:31:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:34,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:31:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559528227] [2023-08-24 10:31:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559528227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 10:31:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822239375] [2023-08-24 10:31:34,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 10:31:34,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 10:31:34,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:31:34,817 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 10:31:34,817 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 10:31:34,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 10:31:34,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 10:31:34,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-24 10:31:34,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 10:31:35,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 10:31:35,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 10:31:35,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 10:31:35,111 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 10:31:35,269 INFO L322 Elim1Store]: treesize reduction 21, result has 57.1 percent of original size [2023-08-24 10:31:35,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 67 [2023-08-24 10:31:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 10:31:35,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 10:31:35,881 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:35,881 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 533 treesize of output 305 [2023-08-24 10:31:36,453 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:36,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 19 new quantified variables, introduced 55 case distinctions, treesize of input 1340 treesize of output 1662 [2023-08-24 10:31:37,188 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:37,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 630 treesize of output 962 [2023-08-24 10:31:37,680 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 10:31:37,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 527 treesize of output 613 [2023-08-24 10:44:19,063 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 10:44:51,491 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. Received shutdown request... [2023-08-24 10:44:53,716 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-24 10:44:53,717 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 10:44:53,719 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 10:44:53,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 10:44:53,739 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 10:44:53,919 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,SelfDestructingSolverStorable16 [2023-08-24 10:44:53,919 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 5ms.. [2023-08-24 10:44:53,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 10:44:53,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 10:44:53,921 INFO L445 BasicCegarLoop]: Path program histogram: [9, 3, 3, 1, 1] [2023-08-24 10:44:53,923 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 10:44:53,923 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 10:44:53,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 10:44:53 BasicIcfg [2023-08-24 10:44:53,924 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 10:44:53,925 INFO L158 Benchmark]: Toolchain (without parser) took 839084.15ms. Allocated memory was 350.2MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 326.6MB in the beginning and 902.0MB in the end (delta: -575.4MB). Peak memory consumption was 896.9MB. Max. memory is 16.0GB. [2023-08-24 10:44:53,925 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory is still 327.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 10:44:53,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.26ms. Allocated memory is still 350.2MB. Free memory was 326.6MB in the beginning and 314.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 10:44:53,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.48ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 10:44:53,925 INFO L158 Benchmark]: Boogie Preprocessor took 37.27ms. Allocated memory is still 350.2MB. Free memory was 312.6MB in the beginning and 311.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 10:44:53,925 INFO L158 Benchmark]: RCFGBuilder took 317.53ms. Allocated memory is still 350.2MB. Free memory was 311.0MB in the beginning and 293.7MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 10:44:53,926 INFO L158 Benchmark]: TraceAbstraction took 838469.98ms. Allocated memory was 350.2MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 293.1MB in the beginning and 902.0MB in the end (delta: -608.9MB). Peak memory consumption was 863.4MB. Max. memory is 16.0GB. [2023-08-24 10:44:53,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory is still 327.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.26ms. Allocated memory is still 350.2MB. Free memory was 326.6MB in the beginning and 314.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.48ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.27ms. Allocated memory is still 350.2MB. Free memory was 312.6MB in the beginning and 311.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 317.53ms. Allocated memory is still 350.2MB. Free memory was 311.0MB in the beginning and 293.7MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 838469.98ms. Allocated memory was 350.2MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 293.1MB in the beginning and 902.0MB in the end (delta: -608.9MB). Peak memory consumption was 863.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 165 PlacesBefore, 21 PlacesAfterwards, 174 TransitionsBefore, 17 TransitionsAfterwards, 3242 CoEnabledTransitionPairs, 8 FixpointIterations, 76 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 27 ConcurrentYvCompositions, 13 ChoiceCompositions, 209 TotalNumberOfCompositions, 3240 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3195, independent: 3187, independent conditional: 0, independent unconditional: 3187, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1935, independent: 1931, independent conditional: 0, independent unconditional: 1931, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3195, independent: 1256, independent conditional: 0, independent unconditional: 1256, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 1935, unknown conditional: 0, unknown unconditional: 1935] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 5ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 5ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 5ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 241 locations, 3 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: 838.4s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 898 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 898 mSDsluCounter, 146 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5213 IncrementalHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 24 mSDtfsCounter, 5213 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 573 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7600occurred in iteration=16, InterpolantAutomatonStates: 200, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 511 NumberOfCodeBlocks, 511 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 636 ConstructedInterpolants, 3 QuantifiedInterpolants, 10513 SizeOfPredicates, 77 NumberOfNonLiveVariables, 2393 ConjunctsInSsa, 263 ConjunctsInUnsatCore, 36 InterpolantComputations, 8 PerfectInterpolantSequences, 51/291 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