./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-59.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b230d83c95de2b0a2d65b5c62bdacb0eaf62e204b83623e9d22dd193a3762a9e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:00:39,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:00:39,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:00:39,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:00:39,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:00:39,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:00:39,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:00:39,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:00:39,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:00:39,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:00:39,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:00:39,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:00:39,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:00:39,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:00:39,675 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:00:39,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:00:39,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:00:39,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:00:39,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:00:39,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:00:39,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:00:39,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:00:39,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:00:39,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:00:39,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:00:39,682 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:00:39,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:00:39,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:00:39,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:00:39,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:00:39,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:00:39,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:00:39,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:00:39,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:00:39,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:00:39,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:00:39,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:00:39,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:00:39,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:00:39,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:00:39,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:00:39,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:00:39,687 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230d83c95de2b0a2d65b5c62bdacb0eaf62e204b83623e9d22dd193a3762a9e [2024-10-24 12:00:39,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:00:39,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:00:39,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:00:39,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:00:39,976 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:00:39,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-59.i [2024-10-24 12:00:41,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:00:41,610 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:00:41,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-59.i [2024-10-24 12:00:41,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a6a611c/b3b7b219a62b444bb800569778dcc72c/FLAG23fcebf28 [2024-10-24 12:00:41,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a6a611c/b3b7b219a62b444bb800569778dcc72c [2024-10-24 12:00:41,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:00:41,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:00:41,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:00:41,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:00:41,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:00:41,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:00:41" (1/1) ... [2024-10-24 12:00:41,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7e180a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:41, skipping insertion in model container [2024-10-24 12:00:41,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:00:41" (1/1) ... [2024-10-24 12:00:42,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:00:42,179 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-59.i[917,930] [2024-10-24 12:00:42,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:00:42,241 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:00:42,253 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-59.i[917,930] [2024-10-24 12:00:42,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:00:42,329 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:00:42,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42 WrapperNode [2024-10-24 12:00:42,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:00:42,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:00:42,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:00:42,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:00:42,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,395 INFO L138 Inliner]: procedures = 26, calls = 126, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 356 [2024-10-24 12:00:42,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:00:42,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:00:42,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:00:42,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:00:42,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,438 INFO L175 MemorySlicer]: Split 96 memory accesses to 2 slices as follows [2, 94]. 98 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 12]. The 16 writes are split as follows [0, 16]. [2024-10-24 12:00:42,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:00:42,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:00:42,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:00:42,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:00:42,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (1/1) ... [2024-10-24 12:00:42,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:00:42,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:00:42,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:00:42,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:00:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:00:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:00:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:00:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:00:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:00:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:00:42,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:00:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:00:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:00:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:00:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:00:42,706 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:00:42,708 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:00:43,140 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-10-24 12:00:43,141 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:00:43,199 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:00:43,200 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 12:00:43,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:00:43 BoogieIcfgContainer [2024-10-24 12:00:43,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:00:43,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:00:43,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:00:43,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:00:43,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:00:41" (1/3) ... [2024-10-24 12:00:43,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64700815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:00:43, skipping insertion in model container [2024-10-24 12:00:43,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:42" (2/3) ... [2024-10-24 12:00:43,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64700815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:00:43, skipping insertion in model container [2024-10-24 12:00:43,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:00:43" (3/3) ... [2024-10-24 12:00:43,209 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-59.i [2024-10-24 12:00:43,240 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:00:43,241 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:00:43,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:00:43,347 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5978030b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:00:43,348 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:00:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 57 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-24 12:00:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-24 12:00:43,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:43,364 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:43,365 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:43,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1520387203, now seen corresponding path program 1 times [2024-10-24 12:00:43,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:43,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143384712] [2024-10-24 12:00:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:43,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:43,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143384712] [2024-10-24 12:00:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143384712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:43,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:43,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:00:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610640890] [2024-10-24 12:00:43,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:43,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 12:00:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 12:00:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 12:00:43,879 INFO L87 Difference]: Start difference. First operand has 77 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 57 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:00:43,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:43,930 INFO L93 Difference]: Finished difference Result 151 states and 246 transitions. [2024-10-24 12:00:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 12:00:43,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 126 [2024-10-24 12:00:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:43,941 INFO L225 Difference]: With dead ends: 151 [2024-10-24 12:00:43,942 INFO L226 Difference]: Without dead ends: 75 [2024-10-24 12:00:43,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 12:00:43,952 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:43,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 12:00:43,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-24 12:00:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-24 12:00:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-24 12:00:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2024-10-24 12:00:44,015 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 126 [2024-10-24 12:00:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:44,015 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2024-10-24 12:00:44,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:00:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2024-10-24 12:00:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-24 12:00:44,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:44,020 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:44,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:00:44,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:44,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:44,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1723858521, now seen corresponding path program 1 times [2024-10-24 12:00:44,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:44,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384370187] [2024-10-24 12:00:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:44,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:44,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:44,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384370187] [2024-10-24 12:00:44,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384370187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:44,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:44,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:00:44,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467418686] [2024-10-24 12:00:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:44,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:00:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:44,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:00:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:00:44,680 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:45,074 INFO L93 Difference]: Finished difference Result 224 states and 329 transitions. [2024-10-24 12:00:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:00:45,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 126 [2024-10-24 12:00:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:45,078 INFO L225 Difference]: With dead ends: 224 [2024-10-24 12:00:45,079 INFO L226 Difference]: Without dead ends: 150 [2024-10-24 12:00:45,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:00:45,082 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 71 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:45,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 219 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:00:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-24 12:00:45,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2024-10-24 12:00:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 102 states have (on average 1.3235294117647058) internal successors, (135), 102 states have internal predecessors, (135), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2024-10-24 12:00:45,125 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 126 [2024-10-24 12:00:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:45,126 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2024-10-24 12:00:45,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2024-10-24 12:00:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 12:00:45,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:45,131 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:45,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:00:45,131 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:45,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1200500503, now seen corresponding path program 1 times [2024-10-24 12:00:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710184083] [2024-10-24 12:00:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:45,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:45,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710184083] [2024-10-24 12:00:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710184083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:45,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:00:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258026896] [2024-10-24 12:00:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:45,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:00:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:00:45,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:00:45,298 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:45,341 INFO L93 Difference]: Finished difference Result 238 states and 353 transitions. [2024-10-24 12:00:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:00:45,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2024-10-24 12:00:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:45,344 INFO L225 Difference]: With dead ends: 238 [2024-10-24 12:00:45,344 INFO L226 Difference]: Without dead ends: 143 [2024-10-24 12:00:45,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:00:45,350 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:45,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 12:00:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-24 12:00:45,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-10-24 12:00:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 209 transitions. [2024-10-24 12:00:45,374 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 209 transitions. Word has length 128 [2024-10-24 12:00:45,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:45,375 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 209 transitions. [2024-10-24 12:00:45,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 209 transitions. [2024-10-24 12:00:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 12:00:45,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:45,381 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:45,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:00:45,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:45,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1506118891, now seen corresponding path program 1 times [2024-10-24 12:00:45,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:45,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466039222] [2024-10-24 12:00:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:45,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:46,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:46,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466039222] [2024-10-24 12:00:46,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466039222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:46,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:46,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:00:46,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654775686] [2024-10-24 12:00:46,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:46,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:00:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:00:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:00:46,869 INFO L87 Difference]: Start difference. First operand 143 states and 209 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-10-24 12:00:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:47,177 INFO L93 Difference]: Finished difference Result 234 states and 344 transitions. [2024-10-24 12:00:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:00:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 128 [2024-10-24 12:00:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:47,180 INFO L225 Difference]: With dead ends: 234 [2024-10-24 12:00:47,180 INFO L226 Difference]: Without dead ends: 143 [2024-10-24 12:00:47,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:00:47,182 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 44 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:47,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 211 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:00:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-24 12:00:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-10-24 12:00:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 104 states have internal predecessors, (136), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 208 transitions. [2024-10-24 12:00:47,203 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 208 transitions. Word has length 128 [2024-10-24 12:00:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:47,204 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 208 transitions. [2024-10-24 12:00:47,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-10-24 12:00:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 208 transitions. [2024-10-24 12:00:47,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 12:00:47,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:47,206 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:47,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:00:47,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:47,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1764284329, now seen corresponding path program 1 times [2024-10-24 12:00:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:47,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319209919] [2024-10-24 12:00:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:47,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319209919] [2024-10-24 12:00:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319209919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:47,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:47,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:00:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464534975] [2024-10-24 12:00:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:47,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:00:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:47,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:00:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:00:47,692 INFO L87 Difference]: Start difference. First operand 143 states and 208 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:47,962 INFO L93 Difference]: Finished difference Result 256 states and 374 transitions. [2024-10-24 12:00:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:00:47,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2024-10-24 12:00:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:47,965 INFO L225 Difference]: With dead ends: 256 [2024-10-24 12:00:47,966 INFO L226 Difference]: Without dead ends: 168 [2024-10-24 12:00:47,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:00:47,968 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 160 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:47,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 154 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:00:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-24 12:00:47,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 146. [2024-10-24 12:00:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 107 states have internal predecessors, (139), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 211 transitions. [2024-10-24 12:00:48,000 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 211 transitions. Word has length 128 [2024-10-24 12:00:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:48,001 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 211 transitions. [2024-10-24 12:00:48,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 211 transitions. [2024-10-24 12:00:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 12:00:48,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:48,003 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:48,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:00:48,003 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:48,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1850624597, now seen corresponding path program 1 times [2024-10-24 12:00:48,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:48,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868553023] [2024-10-24 12:00:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:49,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868553023] [2024-10-24 12:00:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868553023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:50,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:50,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 12:00:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093181203] [2024-10-24 12:00:50,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:50,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:00:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:00:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:00:50,021 INFO L87 Difference]: Start difference. First operand 146 states and 211 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:00:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:50,518 INFO L93 Difference]: Finished difference Result 275 states and 398 transitions. [2024-10-24 12:00:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:00:50,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 128 [2024-10-24 12:00:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:50,520 INFO L225 Difference]: With dead ends: 275 [2024-10-24 12:00:50,521 INFO L226 Difference]: Without dead ends: 191 [2024-10-24 12:00:50,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:00:50,522 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 145 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:50,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 241 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:00:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-24 12:00:50,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2024-10-24 12:00:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 119 states have internal predecessors, (154), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 226 transitions. [2024-10-24 12:00:50,558 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 226 transitions. Word has length 128 [2024-10-24 12:00:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:50,559 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 226 transitions. [2024-10-24 12:00:50,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:00:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 226 transitions. [2024-10-24 12:00:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 12:00:50,561 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:50,561 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:50,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:00:50,561 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:50,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1634996073, now seen corresponding path program 1 times [2024-10-24 12:00:50,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:50,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960415722] [2024-10-24 12:00:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:50,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:50,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960415722] [2024-10-24 12:00:50,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960415722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:50,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:50,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:00:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183344476] [2024-10-24 12:00:50,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:50,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:00:50,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:00:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:00:50,742 INFO L87 Difference]: Start difference. First operand 158 states and 226 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:51,038 INFO L93 Difference]: Finished difference Result 300 states and 432 transitions. [2024-10-24 12:00:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:00:51,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2024-10-24 12:00:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:51,041 INFO L225 Difference]: With dead ends: 300 [2024-10-24 12:00:51,041 INFO L226 Difference]: Without dead ends: 203 [2024-10-24 12:00:51,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:00:51,042 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 69 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:51,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 274 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:00:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-10-24 12:00:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 175. [2024-10-24 12:00:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.2941176470588236) internal successors, (176), 136 states have internal predecessors, (176), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 248 transitions. [2024-10-24 12:00:51,084 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 248 transitions. Word has length 128 [2024-10-24 12:00:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:51,085 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 248 transitions. [2024-10-24 12:00:51,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 248 transitions. [2024-10-24 12:00:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 12:00:51,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:51,087 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:51,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:00:51,088 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:51,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1149560019, now seen corresponding path program 1 times [2024-10-24 12:00:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:51,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011785647] [2024-10-24 12:00:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:51,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:51,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011785647] [2024-10-24 12:00:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011785647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:51,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:51,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:00:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453183574] [2024-10-24 12:00:51,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:51,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:00:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:00:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:00:51,270 INFO L87 Difference]: Start difference. First operand 175 states and 248 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:51,569 INFO L93 Difference]: Finished difference Result 313 states and 447 transitions. [2024-10-24 12:00:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:00:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 128 [2024-10-24 12:00:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:51,572 INFO L225 Difference]: With dead ends: 313 [2024-10-24 12:00:51,573 INFO L226 Difference]: Without dead ends: 196 [2024-10-24 12:00:51,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:00:51,575 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 72 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:51,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 273 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:00:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-10-24 12:00:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 168. [2024-10-24 12:00:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.2868217054263567) internal successors, (166), 129 states have internal predecessors, (166), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 238 transitions. [2024-10-24 12:00:51,614 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 238 transitions. Word has length 128 [2024-10-24 12:00:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:51,615 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 238 transitions. [2024-10-24 12:00:51,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-24 12:00:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 238 transitions. [2024-10-24 12:00:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-24 12:00:51,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:51,617 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:51,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:00:51,618 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:51,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash -310864231, now seen corresponding path program 1 times [2024-10-24 12:00:51,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:51,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382417112] [2024-10-24 12:00:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:51,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:00:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 12:00:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 12:00:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 12:00:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:00:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 12:00:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 12:00:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:00:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-24 12:00:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 12:00:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 12:00:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:00:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:00:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-24 12:00:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 12:00:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:00:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:00:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 12:00:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-24 12:00:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:00:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382417112] [2024-10-24 12:00:52,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382417112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:00:52,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:00:52,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 12:00:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610130538] [2024-10-24 12:00:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:00:52,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 12:00:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:00:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 12:00:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:00:52,419 INFO L87 Difference]: Start difference. First operand 168 states and 238 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:00:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:00:52,847 INFO L93 Difference]: Finished difference Result 341 states and 481 transitions. [2024-10-24 12:00:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:00:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2024-10-24 12:00:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:00:52,849 INFO L225 Difference]: With dead ends: 341 [2024-10-24 12:00:52,849 INFO L226 Difference]: Without dead ends: 241 [2024-10-24 12:00:52,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:00:52,850 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 144 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:00:52,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 332 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:00:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-10-24 12:00:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 214. [2024-10-24 12:00:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 175 states have (on average 1.2914285714285714) internal successors, (226), 175 states have internal predecessors, (226), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:00:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 298 transitions. [2024-10-24 12:00:52,891 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 298 transitions. Word has length 130 [2024-10-24 12:00:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:00:52,892 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 298 transitions. [2024-10-24 12:00:52,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:00:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 298 transitions. [2024-10-24 12:00:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-24 12:00:52,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:00:52,894 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:00:52,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:00:52,895 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:00:52,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:00:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1250744722, now seen corresponding path program 1 times [2024-10-24 12:00:52,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:00:52,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704014738] [2024-10-24 12:00:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:52,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:00:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 12:00:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3478014] [2024-10-24 12:00:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:00:53,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:00:53,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:00:53,032 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) [2024-10-24 12:00:53,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:00:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:00:53,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-24 12:00:53,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:00:53,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:54,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:54,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:55,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:56,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:56,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:57,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:57,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:58,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-10-24 12:00:59,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2024-10-24 12:00:59,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,392 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 12:00:59,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 58 [2024-10-24 12:00:59,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:00:59,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:00:59,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 33 [2024-10-24 12:00:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-10-24 12:00:59,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:01:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:01:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704014738] [2024-10-24 12:01:01,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 12:01:01,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3478014] [2024-10-24 12:01:01,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3478014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:01:01,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:01:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-24 12:01:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110809043] [2024-10-24 12:01:01,076 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 12:01:01,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:01:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:01:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:01:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-10-24 12:01:01,079 INFO L87 Difference]: Start difference. First operand 214 states and 298 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:01:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:01:02,096 INFO L93 Difference]: Finished difference Result 373 states and 521 transitions. [2024-10-24 12:01:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:01:02,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2024-10-24 12:01:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:01:02,100 INFO L225 Difference]: With dead ends: 373 [2024-10-24 12:01:02,100 INFO L226 Difference]: Without dead ends: 232 [2024-10-24 12:01:02,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-10-24 12:01:02,101 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 52 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:01:02,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 446 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 12:01:02,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-10-24 12:01:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 214. [2024-10-24 12:01:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 175 states have (on average 1.2857142857142858) internal successors, (225), 175 states have internal predecessors, (225), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-24 12:01:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 297 transitions. [2024-10-24 12:01:02,133 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 297 transitions. Word has length 131 [2024-10-24 12:01:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:01:02,134 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 297 transitions. [2024-10-24 12:01:02,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-24 12:01:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 297 transitions. [2024-10-24 12:01:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-24 12:01:02,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:01:02,136 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:01:02,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:01:02,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 12:01:02,338 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:01:02,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:01:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash 299892084, now seen corresponding path program 1 times [2024-10-24 12:01:02,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:01:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261322280] [2024-10-24 12:01:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:01:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:01:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 12:01:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292870079] [2024-10-24 12:01:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:01:02,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:01:02,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:01:02,439 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) [2024-10-24 12:01:02,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:01:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:01:02,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-24 12:01:02,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:01:02,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 14 [2024-10-24 12:01:05,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-10-24 12:01:05,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 12:01:05,760 INFO L349 Elim1Store]: treesize reduction 26, result has 29.7 percent of original size [2024-10-24 12:01:05,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 51 [2024-10-24 12:01:16,276 INFO L349 Elim1Store]: treesize reduction 8, result has 95.3 percent of original size [2024-10-24 12:01:16,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 162 treesize of output 258