./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_25-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_25-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 9030972e60093099261ffd255cd123d40a9b99982e16d5d1c2c77af1369268fd --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:05:22,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:05:22,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:05:22,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:05:22,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:05:22,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:05:22,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:05:22,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:05:22,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:05:22,757 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:05:22,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:05:22,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:05:22,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:05:22,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:05:22,759 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:05:22,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:05:22,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:05:22,759 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:05:22,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:05:22,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:05:22,760 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:05:22,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:05:22,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:05:22,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:05:22,761 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:05:22,762 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 9030972e60093099261ffd255cd123d40a9b99982e16d5d1c2c77af1369268fd [2025-01-09 04:05:23,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:05:23,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:05:23,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:05:23,013 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:05:23,014 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:05:23,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_25-2.c [2025-01-09 04:05:24,137 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5922a5c64/1f167c7e4bf047df8fbdeba660e8812d/FLAGf25ca2a90 [2025-01-09 04:05:24,341 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:05:24,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_25-2.c [2025-01-09 04:05:24,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5922a5c64/1f167c7e4bf047df8fbdeba660e8812d/FLAGf25ca2a90 [2025-01-09 04:05:24,706 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5922a5c64/1f167c7e4bf047df8fbdeba660e8812d [2025-01-09 04:05:24,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:05:24,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:05:24,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:05:24,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:05:24,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:05:24,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656bf32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24, skipping insertion in model container [2025-01-09 04:05:24,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,723 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:05:24,810 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_25-2.c[746,759] [2025-01-09 04:05:24,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:05:24,818 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:05:24,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_25-2.c[746,759] [2025-01-09 04:05:24,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:05:24,838 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:05:24,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24 WrapperNode [2025-01-09 04:05:24,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:05:24,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:05:24,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:05:24,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:05:24,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,858 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-01-09 04:05:24,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:05:24,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:05:24,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:05:24,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:05:24,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,873 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 04:05:24,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,874 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:05:24,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:05:24,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:05:24,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:05:24,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (1/1) ... [2025-01-09 04:05:24,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:05:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:24,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:05:24,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:05:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:05:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:05:24,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:05:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:05:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-01-09 04:05:24,919 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-01-09 04:05:24,954 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:05:24,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:05:25,013 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-09 04:05:25,013 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:05:25,019 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:05:25,019 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:05:25,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:05:25 BoogieIcfgContainer [2025-01-09 04:05:25,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:05:25,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:05:25,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:05:25,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:05:25,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:05:24" (1/3) ... [2025-01-09 04:05:25,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ea5819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:05:25, skipping insertion in model container [2025-01-09 04:05:25,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:05:24" (2/3) ... [2025-01-09 04:05:25,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ea5819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:05:25, skipping insertion in model container [2025-01-09 04:05:25,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:05:25" (3/3) ... [2025-01-09 04:05:25,025 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_25-2.c [2025-01-09 04:05:25,035 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:05:25,036 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_25-2.c that has 2 procedures, 20 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:05:25,071 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:05:25,080 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;@3a6985d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:05:25,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:05:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 04:05:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 04:05:25,087 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:25,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:25,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:25,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2025-01-09 04:05:25,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:25,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931630565] [2025-01-09 04:05:25,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:25,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 04:05:25,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 04:05:25,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:25,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:05:25,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:25,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931630565] [2025-01-09 04:05:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931630565] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:05:25,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:05:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:05:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541238559] [2025-01-09 04:05:25,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:05:25,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:05:25,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:25,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:05:25,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:25,260 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:25,310 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2025-01-09 04:05:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:05:25,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-01-09 04:05:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:25,316 INFO L225 Difference]: With dead ends: 32 [2025-01-09 04:05:25,316 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 04:05:25,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:25,320 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:25,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:05:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 04:05:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2025-01-09 04:05:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 04:05:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-09 04:05:25,342 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2025-01-09 04:05:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:25,343 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-09 04:05:25,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-09 04:05:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 04:05:25,344 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:25,344 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:25,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:05:25,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:25,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2025-01-09 04:05:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83959638] [2025-01-09 04:05:25,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:25,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 04:05:25,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 04:05:25,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:25,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:05:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83959638] [2025-01-09 04:05:25,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83959638] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:05:25,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:05:25,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:05:25,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028012174] [2025-01-09 04:05:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:05:25,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:05:25,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:25,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:05:25,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:25,419 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:25,461 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2025-01-09 04:05:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:05:25,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 04:05:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:25,463 INFO L225 Difference]: With dead ends: 24 [2025-01-09 04:05:25,463 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 04:05:25,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:05:25,465 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:25,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:05:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 04:05:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2025-01-09 04:05:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 04:05:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-09 04:05:25,469 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2025-01-09 04:05:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:25,469 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-09 04:05:25,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:05:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-09 04:05:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 04:05:25,470 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:25,470 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:25,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 04:05:25,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:25,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2025-01-09 04:05:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849415704] [2025-01-09 04:05:25,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:25,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:05:25,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:05:25,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:25,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:05:25,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:25,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849415704] [2025-01-09 04:05:25,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849415704] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:25,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715827715] [2025-01-09 04:05:25,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:25,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:25,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:25,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:25,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 04:05:25,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:05:25,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:05:25,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:25,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:25,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:05:25,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:05:25,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 04:05:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715827715] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:25,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2025-01-09 04:05:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396272663] [2025-01-09 04:05:25,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:25,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 04:05:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:25,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 04:05:25,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:05:25,859 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:05:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:25,921 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2025-01-09 04:05:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:05:25,921 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2025-01-09 04:05:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:25,921 INFO L225 Difference]: With dead ends: 35 [2025-01-09 04:05:25,921 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 04:05:25,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-01-09 04:05:25,922 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:25,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:05:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 04:05:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-09 04:05:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 04:05:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2025-01-09 04:05:25,932 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2025-01-09 04:05:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:25,932 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2025-01-09 04:05:25,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:05:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2025-01-09 04:05:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 04:05:25,932 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:25,933 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:25,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:26,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:26,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:26,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2025-01-09 04:05:26,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:26,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947914881] [2025-01-09 04:05:26,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:26,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:05:26,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:05:26,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:26,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:05:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947914881] [2025-01-09 04:05:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947914881] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607404173] [2025-01-09 04:05:26,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:05:26,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:26,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:26,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 04:05:26,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:05:26,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:05:26,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:26,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:26,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:05:26,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:05:26,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 04:05:26,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607404173] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:26,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:26,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2025-01-09 04:05:26,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586459565] [2025-01-09 04:05:26,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:26,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 04:05:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:26,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 04:05:26,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-09 04:05:26,428 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:05:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:26,485 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2025-01-09 04:05:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 04:05:26,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2025-01-09 04:05:26,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:26,486 INFO L225 Difference]: With dead ends: 29 [2025-01-09 04:05:26,486 INFO L226 Difference]: Without dead ends: 25 [2025-01-09 04:05:26,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:05:26,487 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:26,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:05:26,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-09 04:05:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-01-09 04:05:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-01-09 04:05:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2025-01-09 04:05:26,491 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2025-01-09 04:05:26,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:26,491 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2025-01-09 04:05:26,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:05:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2025-01-09 04:05:26,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 04:05:26,492 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:26,492 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:26,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 04:05:26,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:26,697 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:26,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2025-01-09 04:05:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:26,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363971336] [2025-01-09 04:05:26,698 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:26,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:26,703 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 04:05:26,709 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:05:26,710 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:26,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 04:05:26,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363971336] [2025-01-09 04:05:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363971336] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524455747] [2025-01-09 04:05:26,830 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:26,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:26,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:26,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:26,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 04:05:26,857 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 04:05:26,885 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:05:26,885 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:26,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:26,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:05:26,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 04:05:26,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 04:05:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524455747] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:27,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:27,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2025-01-09 04:05:27,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765293667] [2025-01-09 04:05:27,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:27,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:05:27,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:27,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:05:27,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:05:27,239 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2025-01-09 04:05:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:27,431 INFO L93 Difference]: Finished difference Result 60 states and 93 transitions. [2025-01-09 04:05:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:05:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2025-01-09 04:05:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:27,432 INFO L225 Difference]: With dead ends: 60 [2025-01-09 04:05:27,433 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 04:05:27,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2025-01-09 04:05:27,435 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:27,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 95 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 04:05:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-01-09 04:05:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 04:05:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2025-01-09 04:05:27,442 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2025-01-09 04:05:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:27,443 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2025-01-09 04:05:27,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2025-01-09 04:05:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2025-01-09 04:05:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 04:05:27,446 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:27,446 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:27,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 04:05:27,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:27,651 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:27,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:27,651 INFO L85 PathProgramCache]: Analyzing trace with hash -721858190, now seen corresponding path program 3 times [2025-01-09 04:05:27,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:27,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190352515] [2025-01-09 04:05:27,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:27,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:27,658 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 12 equivalence classes. [2025-01-09 04:05:27,672 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 59 of 93 statements. [2025-01-09 04:05:27,672 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 04:05:27,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-01-09 04:05:27,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:27,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190352515] [2025-01-09 04:05:27,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190352515] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:27,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141098514] [2025-01-09 04:05:27,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:27,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:27,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:27,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:27,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 04:05:27,801 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 12 equivalence classes. [2025-01-09 04:05:27,821 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 59 of 93 statements. [2025-01-09 04:05:27,821 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 04:05:27,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:27,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:05:27,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-01-09 04:05:27,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-01-09 04:05:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141098514] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:28,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2025-01-09 04:05:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738572500] [2025-01-09 04:05:28,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:28,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 04:05:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:28,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 04:05:28,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:05:28,192 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 04:05:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:28,283 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2025-01-09 04:05:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:05:28,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2025-01-09 04:05:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:28,284 INFO L225 Difference]: With dead ends: 72 [2025-01-09 04:05:28,284 INFO L226 Difference]: Without dead ends: 40 [2025-01-09 04:05:28,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:05:28,285 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:28,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-09 04:05:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-01-09 04:05:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-09 04:05:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2025-01-09 04:05:28,293 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 93 [2025-01-09 04:05:28,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:28,293 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2025-01-09 04:05:28,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 04:05:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2025-01-09 04:05:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 04:05:28,296 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:28,296 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:28,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 04:05:28,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 04:05:28,497 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:28,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 366248375, now seen corresponding path program 4 times [2025-01-09 04:05:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578722824] [2025-01-09 04:05:28,498 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:05:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:28,503 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 79 statements into 2 equivalence classes. [2025-01-09 04:05:28,507 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 65 of 79 statements. [2025-01-09 04:05:28,507 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:05:28,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 72 proven. 121 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2025-01-09 04:05:28,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578722824] [2025-01-09 04:05:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578722824] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956214864] [2025-01-09 04:05:28,662 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:05:28,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:28,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:28,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:28,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 04:05:28,693 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 79 statements into 2 equivalence classes. [2025-01-09 04:05:28,704 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 65 of 79 statements. [2025-01-09 04:05:28,704 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:05:28,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:28,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:05:28,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 82 proven. 122 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 04:05:28,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 82 proven. 134 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 04:05:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956214864] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:29,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-01-09 04:05:29,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244955289] [2025-01-09 04:05:29,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:29,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 04:05:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:29,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 04:05:29,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:05:29,357 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2025-01-09 04:05:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:29,554 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2025-01-09 04:05:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:05:29,554 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) Word has length 79 [2025-01-09 04:05:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:29,555 INFO L225 Difference]: With dead ends: 86 [2025-01-09 04:05:29,555 INFO L226 Difference]: Without dead ends: 52 [2025-01-09 04:05:29,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2025-01-09 04:05:29,556 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:29,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 98 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-01-09 04:05:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2025-01-09 04:05:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-09 04:05:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2025-01-09 04:05:29,563 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 79 [2025-01-09 04:05:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:29,564 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2025-01-09 04:05:29,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2025-01-09 04:05:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2025-01-09 04:05:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-09 04:05:29,566 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:29,566 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:29,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:29,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:29,767 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:29,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2015531204, now seen corresponding path program 5 times [2025-01-09 04:05:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655282859] [2025-01-09 04:05:29,768 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:29,773 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 8 equivalence classes. [2025-01-09 04:05:29,781 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 65 of 65 statements. [2025-01-09 04:05:29,781 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-09 04:05:29,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 39 proven. 57 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-01-09 04:05:29,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655282859] [2025-01-09 04:05:29,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655282859] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430327812] [2025-01-09 04:05:29,857 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:29,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:29,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:29,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 04:05:29,889 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 8 equivalence classes. [2025-01-09 04:05:29,906 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 65 of 65 statements. [2025-01-09 04:05:29,907 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-09 04:05:29,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:29,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:05:29,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-01-09 04:05:29,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-01-09 04:05:30,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430327812] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:30,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:30,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 12 [2025-01-09 04:05:30,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984363804] [2025-01-09 04:05:30,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:30,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:05:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:30,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:05:30,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:05:30,185 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2025-01-09 04:05:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:30,263 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2025-01-09 04:05:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:05:30,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) Word has length 65 [2025-01-09 04:05:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:30,264 INFO L225 Difference]: With dead ends: 51 [2025-01-09 04:05:30,264 INFO L226 Difference]: Without dead ends: 47 [2025-01-09 04:05:30,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:05:30,265 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:30,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 69 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-01-09 04:05:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2025-01-09 04:05:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 04:05:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2025-01-09 04:05:30,274 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 65 [2025-01-09 04:05:30,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:30,275 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2025-01-09 04:05:30,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2025-01-09 04:05:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2025-01-09 04:05:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-01-09 04:05:30,277 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:30,277 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:30,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:30,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 04:05:30,478 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:30,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash -292645265, now seen corresponding path program 6 times [2025-01-09 04:05:30,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:30,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144722328] [2025-01-09 04:05:30,479 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:30,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:30,485 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 13 equivalence classes. [2025-01-09 04:05:30,496 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 92 of 106 statements. [2025-01-09 04:05:30,497 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:05:30,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 45 proven. 223 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2025-01-09 04:05:30,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:30,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144722328] [2025-01-09 04:05:30,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144722328] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:30,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049188108] [2025-01-09 04:05:30,616 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:30,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:30,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:30,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 04:05:30,651 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 13 equivalence classes. [2025-01-09 04:05:30,673 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 92 of 106 statements. [2025-01-09 04:05:30,673 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:05:30,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:30,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:05:30,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2025-01-09 04:05:30,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2025-01-09 04:05:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049188108] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:31,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2025-01-09 04:05:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107850409] [2025-01-09 04:05:31,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:31,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 04:05:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:31,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 04:05:31,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:05:31,416 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:05:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:31,493 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2025-01-09 04:05:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 04:05:31,494 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) Word has length 106 [2025-01-09 04:05:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:31,495 INFO L225 Difference]: With dead ends: 59 [2025-01-09 04:05:31,495 INFO L226 Difference]: Without dead ends: 55 [2025-01-09 04:05:31,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 204 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:05:31,496 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:31,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 81 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:05:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-09 04:05:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2025-01-09 04:05:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 35 states have internal predecessors, (38), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2025-01-09 04:05:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2025-01-09 04:05:31,504 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 106 [2025-01-09 04:05:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:31,505 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2025-01-09 04:05:31,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:05:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2025-01-09 04:05:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2025-01-09 04:05:31,506 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:31,506 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:31,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 04:05:31,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:31,707 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:31,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash -943421620, now seen corresponding path program 7 times [2025-01-09 04:05:31,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717167332] [2025-01-09 04:05:31,707 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:31,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-01-09 04:05:31,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-01-09 04:05:31,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:31,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 103 proven. 653 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2025-01-09 04:05:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717167332] [2025-01-09 04:05:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717167332] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29551164] [2025-01-09 04:05:31,939 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:31,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:31,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:31,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:31,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 04:05:31,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-01-09 04:05:32,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-01-09 04:05:32,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:32,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:32,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:05:32,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 103 proven. 653 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2025-01-09 04:05:32,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 103 proven. 693 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2025-01-09 04:05:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29551164] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:33,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2025-01-09 04:05:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387215191] [2025-01-09 04:05:33,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:33,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:05:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:33,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:05:33,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:05:33,059 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2025-01-09 04:05:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:33,171 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2025-01-09 04:05:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 04:05:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 201 [2025-01-09 04:05:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:33,172 INFO L225 Difference]: With dead ends: 61 [2025-01-09 04:05:33,172 INFO L226 Difference]: Without dead ends: 57 [2025-01-09 04:05:33,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 394 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:05:33,173 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:33,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 86 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-01-09 04:05:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-01-09 04:05:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 states have internal predecessors, (41), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (30), 13 states have call predecessors, (30), 9 states have call successors, (30) [2025-01-09 04:05:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2025-01-09 04:05:33,179 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 201 [2025-01-09 04:05:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:33,179 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2025-01-09 04:05:33,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2025-01-09 04:05:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2025-01-09 04:05:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2025-01-09 04:05:33,186 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:33,186 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:33,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:33,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:33,386 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:33,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1104926743, now seen corresponding path program 8 times [2025-01-09 04:05:33,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:33,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097642795] [2025-01-09 04:05:33,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:33,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:33,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 324 statements into 2 equivalence classes. [2025-01-09 04:05:33,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 324 of 324 statements. [2025-01-09 04:05:33,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:33,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1327 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2025-01-09 04:05:33,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097642795] [2025-01-09 04:05:33,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097642795] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720563286] [2025-01-09 04:05:33,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:33,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:33,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:33,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 04:05:33,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 324 statements into 2 equivalence classes. [2025-01-09 04:05:33,848 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 324 of 324 statements. [2025-01-09 04:05:33,849 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:33,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:33,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:05:33,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1327 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2025-01-09 04:05:33,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1384 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2025-01-09 04:05:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720563286] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:35,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 19 [2025-01-09 04:05:35,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995616400] [2025-01-09 04:05:35,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:35,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 04:05:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:35,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 04:05:35,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-01-09 04:05:35,429 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2025-01-09 04:05:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:35,593 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2025-01-09 04:05:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:05:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 324 [2025-01-09 04:05:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:35,595 INFO L225 Difference]: With dead ends: 66 [2025-01-09 04:05:35,596 INFO L226 Difference]: Without dead ends: 62 [2025-01-09 04:05:35,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 639 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2025-01-09 04:05:35,596 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:35,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 82 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-01-09 04:05:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-01-09 04:05:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 41 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (41), 15 states have call predecessors, (41), 10 states have call successors, (41) [2025-01-09 04:05:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 95 transitions. [2025-01-09 04:05:35,608 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 95 transitions. Word has length 324 [2025-01-09 04:05:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:35,610 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 95 transitions. [2025-01-09 04:05:35,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2025-01-09 04:05:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 95 transitions. [2025-01-09 04:05:35,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2025-01-09 04:05:35,617 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:35,617 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 59, 36, 36, 36, 36, 36, 36, 36, 23, 14, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:35,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:35,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:35,818 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:35,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:35,818 INFO L85 PathProgramCache]: Analyzing trace with hash 269277482, now seen corresponding path program 9 times [2025-01-09 04:05:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252571056] [2025-01-09 04:05:35,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:35,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 501 statements into 57 equivalence classes. [2025-01-09 04:05:35,862 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 204 of 501 statements. [2025-01-09 04:05:35,864 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 04:05:35,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 14743 backedges. 1517 proven. 265 refuted. 0 times theorem prover too weak. 12961 trivial. 0 not checked. [2025-01-09 04:05:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252571056] [2025-01-09 04:05:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252571056] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650503297] [2025-01-09 04:05:36,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:36,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:36,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:36,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 04:05:36,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 501 statements into 57 equivalence classes. [2025-01-09 04:05:36,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 204 of 501 statements. [2025-01-09 04:05:36,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 04:05:36,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:36,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:05:36,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 14743 backedges. 1564 proven. 270 refuted. 0 times theorem prover too weak. 12909 trivial. 0 not checked. [2025-01-09 04:05:36,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14743 backedges. 1570 proven. 296 refuted. 0 times theorem prover too weak. 12877 trivial. 0 not checked. [2025-01-09 04:05:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650503297] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:37,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:37,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 17 [2025-01-09 04:05:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057022883] [2025-01-09 04:05:37,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:37,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:05:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:37,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:05:37,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:05:37,501 INFO L87 Difference]: Start difference. First operand 62 states and 95 transitions. Second operand has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2025-01-09 04:05:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:37,635 INFO L93 Difference]: Finished difference Result 165 states and 333 transitions. [2025-01-09 04:05:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:05:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 501 [2025-01-09 04:05:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:37,638 INFO L225 Difference]: With dead ends: 165 [2025-01-09 04:05:37,638 INFO L226 Difference]: Without dead ends: 106 [2025-01-09 04:05:37,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 993 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:05:37,639 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:37,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 75 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-01-09 04:05:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 77. [2025-01-09 04:05:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 51 states have internal predecessors, (56), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (56), 18 states have call predecessors, (56), 14 states have call successors, (56) [2025-01-09 04:05:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 126 transitions. [2025-01-09 04:05:37,647 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 126 transitions. Word has length 501 [2025-01-09 04:05:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:37,648 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 126 transitions. [2025-01-09 04:05:37,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2025-01-09 04:05:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 126 transitions. [2025-01-09 04:05:37,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2025-01-09 04:05:37,653 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:37,654 INFO L218 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:37,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 04:05:37,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 04:05:37,857 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:37,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1550468663, now seen corresponding path program 10 times [2025-01-09 04:05:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148716068] [2025-01-09 04:05:37,857 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:05:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:37,868 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 569 statements into 2 equivalence classes. [2025-01-09 04:05:37,895 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 483 of 569 statements. [2025-01-09 04:05:37,896 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:05:37,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1662 proven. 3510 refuted. 0 times theorem prover too weak. 13931 trivial. 0 not checked. [2025-01-09 04:05:38,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:38,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148716068] [2025-01-09 04:05:38,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148716068] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:38,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132275799] [2025-01-09 04:05:38,521 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:05:38,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:38,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:38,523 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:38,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 04:05:38,612 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 569 statements into 2 equivalence classes. [2025-01-09 04:05:38,684 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 483 of 569 statements. [2025-01-09 04:05:38,685 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:05:38,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:38,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 04:05:38,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1969 proven. 3803 refuted. 0 times theorem prover too weak. 13331 trivial. 0 not checked. [2025-01-09 04:05:38,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1969 proven. 3911 refuted. 0 times theorem prover too weak. 13223 trivial. 0 not checked. [2025-01-09 04:05:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132275799] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:42,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:42,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2025-01-09 04:05:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152985927] [2025-01-09 04:05:42,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:42,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:05:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:42,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:05:42,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:05:42,188 INFO L87 Difference]: Start difference. First operand 77 states and 126 transitions. Second operand has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 29 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (45), 17 states have call predecessors, (45), 29 states have call successors, (45) [2025-01-09 04:05:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:42,744 INFO L93 Difference]: Finished difference Result 206 states and 448 transitions. [2025-01-09 04:05:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-09 04:05:42,745 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 29 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (45), 17 states have call predecessors, (45), 29 states have call successors, (45) Word has length 569 [2025-01-09 04:05:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:42,748 INFO L225 Difference]: With dead ends: 206 [2025-01-09 04:05:42,748 INFO L226 Difference]: Without dead ends: 135 [2025-01-09 04:05:42,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1116 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2025-01-09 04:05:42,751 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 323 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:42,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 194 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:05:42,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-01-09 04:05:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2025-01-09 04:05:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 21 states have call successors, (21), 16 states have call predecessors, (21), 10 states have return successors, (56), 17 states have call predecessors, (56), 21 states have call successors, (56) [2025-01-09 04:05:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 157 transitions. [2025-01-09 04:05:42,770 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 157 transitions. Word has length 569 [2025-01-09 04:05:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:42,770 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 157 transitions. [2025-01-09 04:05:42,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 29 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (45), 17 states have call predecessors, (45), 29 states have call successors, (45) [2025-01-09 04:05:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 157 transitions. [2025-01-09 04:05:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2025-01-09 04:05:42,777 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:42,777 INFO L218 NwaCegarLoop]: trace histogram [151, 151, 122, 75, 75, 75, 75, 75, 75, 75, 47, 29, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:42,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:42,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 04:05:42,978 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:42,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash 734454185, now seen corresponding path program 11 times [2025-01-09 04:05:42,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:42,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395587093] [2025-01-09 04:05:42,979 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:42,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:42,997 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1032 statements into 126 equivalence classes. [2025-01-09 04:05:43,125 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) and asserted 737 of 1032 statements. [2025-01-09 04:05:43,125 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2025-01-09 04:05:43,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 6639 proven. 3319 refuted. 0 times theorem prover too weak. 53823 trivial. 0 not checked. [2025-01-09 04:05:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395587093] [2025-01-09 04:05:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395587093] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826713805] [2025-01-09 04:05:44,071 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:44,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:44,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:44,074 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:44,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 04:05:44,238 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1032 statements into 126 equivalence classes. [2025-01-09 04:05:44,458 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) and asserted 737 of 1032 statements. [2025-01-09 04:05:44,458 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2025-01-09 04:05:44,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:44,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 04:05:44,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 24196 proven. 1865 refuted. 0 times theorem prover too weak. 37720 trivial. 0 not checked. [2025-01-09 04:05:44,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 6866 proven. 3648 refuted. 0 times theorem prover too weak. 53267 trivial. 0 not checked. [2025-01-09 04:05:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826713805] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:48,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:48,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 27] total 35 [2025-01-09 04:05:48,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937320167] [2025-01-09 04:05:48,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:48,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 04:05:48,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:48,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 04:05:48,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=967, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 04:05:48,849 INFO L87 Difference]: Start difference. First operand 110 states and 157 transitions. Second operand has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 27 states have call successors, (34), 2 states have call predecessors, (34), 15 states have return successors, (45), 17 states have call predecessors, (45), 27 states have call successors, (45) [2025-01-09 04:05:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:49,185 INFO L93 Difference]: Finished difference Result 239 states and 364 transitions. [2025-01-09 04:05:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 04:05:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 27 states have call successors, (34), 2 states have call predecessors, (34), 15 states have return successors, (45), 17 states have call predecessors, (45), 27 states have call successors, (45) Word has length 1032 [2025-01-09 04:05:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:49,190 INFO L225 Difference]: With dead ends: 239 [2025-01-09 04:05:49,190 INFO L226 Difference]: Without dead ends: 132 [2025-01-09 04:05:49,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2110 GetRequests, 2044 SyntacticMatches, 14 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=740, Invalid=2122, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 04:05:49,192 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 82 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:49,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 223 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:05:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-09 04:05:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 99. [2025-01-09 04:05:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 68 states have internal predecessors, (70), 19 states have call successors, (19), 13 states have call predecessors, (19), 10 states have return successors, (52), 17 states have call predecessors, (52), 19 states have call successors, (52) [2025-01-09 04:05:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2025-01-09 04:05:49,204 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 1032 [2025-01-09 04:05:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:49,205 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2025-01-09 04:05:49,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 27 states have call successors, (34), 2 states have call predecessors, (34), 15 states have return successors, (45), 17 states have call predecessors, (45), 27 states have call successors, (45) [2025-01-09 04:05:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2025-01-09 04:05:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2025-01-09 04:05:49,213 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:49,214 INFO L218 NwaCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:49,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 04:05:49,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:49,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:49,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash -586878367, now seen corresponding path program 12 times [2025-01-09 04:05:49,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:49,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428250906] [2025-01-09 04:05:49,415 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:49,432 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 923 statements into 116 equivalence classes. [2025-01-09 04:05:49,455 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) and asserted 243 of 923 statements. [2025-01-09 04:05:49,459 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2025-01-09 04:05:49,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 1363 proven. 4292 refuted. 0 times theorem prover too weak. 45255 trivial. 0 not checked. [2025-01-09 04:05:49,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428250906] [2025-01-09 04:05:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428250906] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822087407] [2025-01-09 04:05:49,623 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:49,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:49,626 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:49,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 04:05:49,805 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 923 statements into 116 equivalence classes. [2025-01-09 04:05:49,860 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) and asserted 243 of 923 statements. [2025-01-09 04:05:49,861 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2025-01-09 04:05:49,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:49,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:05:49,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 1363 proven. 4292 refuted. 0 times theorem prover too weak. 45255 trivial. 0 not checked. [2025-01-09 04:05:49,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 1371 proven. 4361 refuted. 0 times theorem prover too weak. 45178 trivial. 0 not checked. [2025-01-09 04:05:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822087407] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:52,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 21 [2025-01-09 04:05:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461065769] [2025-01-09 04:05:52,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:52,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 04:05:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:52,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 04:05:52,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:05:52,781 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 21 states have internal predecessors, (65), 17 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2025-01-09 04:05:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:52,896 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2025-01-09 04:05:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:05:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 21 states have internal predecessors, (65), 17 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) Word has length 923 [2025-01-09 04:05:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:52,899 INFO L225 Difference]: With dead ends: 111 [2025-01-09 04:05:52,899 INFO L226 Difference]: Without dead ends: 107 [2025-01-09 04:05:52,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1870 GetRequests, 1836 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:05:52,899 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:52,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 117 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-01-09 04:05:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2025-01-09 04:05:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 71 states have internal predecessors, (73), 20 states have call successors, (20), 13 states have call predecessors, (20), 11 states have return successors, (63), 19 states have call predecessors, (63), 20 states have call successors, (63) [2025-01-09 04:05:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 156 transitions. [2025-01-09 04:05:52,908 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 156 transitions. Word has length 923 [2025-01-09 04:05:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:52,908 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 156 transitions. [2025-01-09 04:05:52,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 21 states have internal predecessors, (65), 17 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2025-01-09 04:05:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 156 transitions. [2025-01-09 04:05:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2025-01-09 04:05:52,916 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:52,916 INFO L218 NwaCegarLoop]: trace histogram [187, 187, 151, 93, 93, 93, 93, 93, 93, 93, 58, 36, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:52,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:53,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:53,120 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:53,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:53,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1689267575, now seen corresponding path program 13 times [2025-01-09 04:05:53,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:53,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115922575] [2025-01-09 04:05:53,120 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:53,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1277 statements into 1 equivalence classes. [2025-01-09 04:05:53,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1277 of 1277 statements. [2025-01-09 04:05:53,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:53,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 3051 proven. 10112 refuted. 0 times theorem prover too weak. 84838 trivial. 0 not checked. [2025-01-09 04:05:54,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115922575] [2025-01-09 04:05:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115922575] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758433101] [2025-01-09 04:05:54,911 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:54,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:54,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:54,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:54,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 04:05:55,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1277 statements into 1 equivalence classes. [2025-01-09 04:05:55,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1277 of 1277 statements. [2025-01-09 04:05:55,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:55,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:55,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 04:05:55,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 1133 proven. 8809 refuted. 0 times theorem prover too weak. 88059 trivial. 0 not checked. [2025-01-09 04:05:55,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 1133 proven. 8935 refuted. 0 times theorem prover too weak. 87933 trivial. 0 not checked. [2025-01-09 04:06:00,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758433101] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:00,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:00,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 23] total 37 [2025-01-09 04:06:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151078694] [2025-01-09 04:06:00,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:00,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 04:06:00,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:00,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 04:06:00,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 04:06:00,310 INFO L87 Difference]: Start difference. First operand 104 states and 156 transitions. Second operand has 37 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 37 states have internal predecessors, (109), 32 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (52), 21 states have call predecessors, (52), 32 states have call successors, (52) [2025-01-09 04:06:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:00,970 INFO L93 Difference]: Finished difference Result 291 states and 606 transitions. [2025-01-09 04:06:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-01-09 04:06:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 37 states have internal predecessors, (109), 32 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (52), 21 states have call predecessors, (52), 32 states have call successors, (52) Word has length 1277 [2025-01-09 04:06:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:00,973 INFO L225 Difference]: With dead ends: 291 [2025-01-09 04:06:00,974 INFO L226 Difference]: Without dead ends: 190 [2025-01-09 04:06:00,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2622 GetRequests, 2536 SyntacticMatches, 10 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1625 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1330, Invalid=4676, Unknown=0, NotChecked=0, Total=6006 [2025-01-09 04:06:00,976 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 194 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:00,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 307 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:06:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-01-09 04:06:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 164. [2025-01-09 04:06:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 117 states have (on average 1.017094017094017) internal successors, (119), 115 states have internal predecessors, (119), 34 states have call successors, (34), 27 states have call predecessors, (34), 12 states have return successors, (105), 21 states have call predecessors, (105), 34 states have call successors, (105) [2025-01-09 04:06:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 258 transitions. [2025-01-09 04:06:00,989 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 258 transitions. Word has length 1277 [2025-01-09 04:06:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:00,990 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 258 transitions. [2025-01-09 04:06:00,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 37 states have internal predecessors, (109), 32 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (52), 21 states have call predecessors, (52), 32 states have call successors, (52) [2025-01-09 04:06:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 258 transitions. [2025-01-09 04:06:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3566 [2025-01-09 04:06:01,033 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:01,034 INFO L218 NwaCegarLoop]: trace histogram [523, 523, 423, 261, 261, 261, 261, 261, 261, 261, 162, 100, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:01,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 04:06:01,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 04:06:01,234 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:01,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash 522526173, now seen corresponding path program 14 times [2025-01-09 04:06:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477069841] [2025-01-09 04:06:01,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:06:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:01,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3565 statements into 2 equivalence classes. [2025-01-09 04:06:01,889 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 3565 of 3565 statements. [2025-01-09 04:06:01,889 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:06:01,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 770985 backedges. 2597 proven. 29116 refuted. 0 times theorem prover too weak. 739272 trivial. 0 not checked. [2025-01-09 04:06:09,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477069841] [2025-01-09 04:06:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477069841] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231554318] [2025-01-09 04:06:09,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:06:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:09,632 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:09,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 04:06:09,966 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3565 statements into 2 equivalence classes. [2025-01-09 04:06:10,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 3565 of 3565 statements. [2025-01-09 04:06:10,517 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:06:10,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:10,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 7934 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 04:06:10,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 770985 backedges. 2597 proven. 29116 refuted. 0 times theorem prover too weak. 739272 trivial. 0 not checked. [2025-01-09 04:06:10,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 770985 backedges. 2597 proven. 29271 refuted. 0 times theorem prover too weak. 739117 trivial. 0 not checked. [2025-01-09 04:06:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231554318] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:21,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:21,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 27 [2025-01-09 04:06:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841242814] [2025-01-09 04:06:21,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:21,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 04:06:21,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:21,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 04:06:21,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:06:21,676 INFO L87 Difference]: Start difference. First operand 164 states and 258 transitions. Second operand has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2025-01-09 04:06:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:21,811 INFO L93 Difference]: Finished difference Result 173 states and 284 transitions. [2025-01-09 04:06:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:06:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) Word has length 3565 [2025-01-09 04:06:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:21,816 INFO L225 Difference]: With dead ends: 173 [2025-01-09 04:06:21,816 INFO L226 Difference]: Without dead ends: 169 [2025-01-09 04:06:21,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7163 GetRequests, 7117 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=424, Invalid=908, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 04:06:21,817 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 69 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:21,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 121 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-01-09 04:06:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-01-09 04:06:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 118 states have internal predecessors, (122), 35 states have call successors, (35), 27 states have call predecessors, (35), 13 states have return successors, (118), 23 states have call predecessors, (118), 35 states have call successors, (118) [2025-01-09 04:06:21,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 275 transitions. [2025-01-09 04:06:21,828 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 275 transitions. Word has length 3565 [2025-01-09 04:06:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:21,828 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 275 transitions. [2025-01-09 04:06:21,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2025-01-09 04:06:21,829 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 275 transitions. [2025-01-09 04:06:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3171 [2025-01-09 04:06:21,864 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:21,865 INFO L218 NwaCegarLoop]: trace histogram [465, 465, 376, 232, 232, 232, 232, 232, 232, 232, 144, 89, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:21,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 04:06:22,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 04:06:22,065 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:22,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1169407108, now seen corresponding path program 15 times [2025-01-09 04:06:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:22,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432007281] [2025-01-09 04:06:22,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:22,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 3170 statements into 399 equivalence classes. [2025-01-09 04:06:22,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) and asserted 403 of 3170 statements. [2025-01-09 04:06:22,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2025-01-09 04:06:22,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 609204 backedges. 3400 proven. 27297 refuted. 0 times theorem prover too weak. 578507 trivial. 0 not checked. [2025-01-09 04:06:22,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432007281] [2025-01-09 04:06:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432007281] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900582617] [2025-01-09 04:06:22,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:06:22,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:22,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:22,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:06:22,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 04:06:22,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 3170 statements into 399 equivalence classes. [2025-01-09 04:06:23,043 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) and asserted 403 of 3170 statements. [2025-01-09 04:06:23,043 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2025-01-09 04:06:23,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:23,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 04:06:23,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 609204 backedges. 3400 proven. 27297 refuted. 0 times theorem prover too weak. 578507 trivial. 0 not checked. [2025-01-09 04:06:23,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 609204 backedges. 3400 proven. 27484 refuted. 0 times theorem prover too weak. 578320 trivial. 0 not checked. [2025-01-09 04:06:33,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900582617] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:33,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:33,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 29 [2025-01-09 04:06:33,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659788903] [2025-01-09 04:06:33,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:33,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 04:06:33,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:33,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 04:06:33,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2025-01-09 04:06:33,379 INFO L87 Difference]: Start difference. First operand 169 states and 275 transitions. Second operand has 29 states, 27 states have (on average 3.259259259259259) internal successors, (88), 29 states have internal predecessors, (88), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2025-01-09 04:06:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:33,603 INFO L93 Difference]: Finished difference Result 178 states and 303 transitions. [2025-01-09 04:06:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:06:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.259259259259259) internal successors, (88), 29 states have internal predecessors, (88), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) Word has length 3170 [2025-01-09 04:06:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:33,607 INFO L225 Difference]: With dead ends: 178 [2025-01-09 04:06:33,608 INFO L226 Difference]: Without dead ends: 174 [2025-01-09 04:06:33,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6376 GetRequests, 6326 SyntacticMatches, 12 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=498, Invalid=1062, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:06:33,608 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 267 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:33,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 132 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-01-09 04:06:33,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2025-01-09 04:06:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 123 states have (on average 1.016260162601626) internal successors, (125), 121 states have internal predecessors, (125), 36 states have call successors, (36), 27 states have call predecessors, (36), 14 states have return successors, (133), 25 states have call predecessors, (133), 36 states have call successors, (133) [2025-01-09 04:06:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 294 transitions. [2025-01-09 04:06:33,619 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 294 transitions. Word has length 3170 [2025-01-09 04:06:33,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:33,619 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 294 transitions. [2025-01-09 04:06:33,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.259259259259259) internal successors, (88), 29 states have internal predecessors, (88), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2025-01-09 04:06:33,619 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 294 transitions. [2025-01-09 04:06:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7774 [2025-01-09 04:06:33,843 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:33,845 INFO L218 NwaCegarLoop]: trace histogram [1141, 1141, 923, 570, 570, 570, 570, 570, 570, 570, 353, 218, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:33,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 04:06:34,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 04:06:34,045 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:34,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash 419659052, now seen corresponding path program 16 times [2025-01-09 04:06:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992981859] [2025-01-09 04:06:34,048 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:06:34,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:34,140 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 7773 statements into 2 equivalence classes. [2025-01-09 04:06:36,357 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 6629 of 7773 statements. [2025-01-09 04:06:36,357 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:06:36,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat