./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_2calls_8-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 02:32:30,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 02:32:30,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 02:32:30,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 02:32:30,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 02:32:30,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 02:32:30,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 02:32:30,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 02:32:30,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 02:32:30,976 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 02:32:30,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 02:32:30,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 02:32:30,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 02:32:30,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 02:32:30,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 02:32:30,978 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:32:30,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:32:30,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:32:30,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 02:32:30,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 02:32:30,979 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 ! overflow) ) 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 -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2025-01-10 02:32:31,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 02:32:31,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 02:32:31,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 02:32:31,180 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 02:32:31,180 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 02:32:31,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2025-01-10 02:32:32,280 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd07da844/34b2f237e8f54337bb588b6a8648cdb7/FLAG53c5a5ba2 [2025-01-10 02:32:32,488 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 02:32:32,489 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2025-01-10 02:32:32,520 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd07da844/34b2f237e8f54337bb588b6a8648cdb7/FLAG53c5a5ba2 [2025-01-10 02:32:32,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd07da844/34b2f237e8f54337bb588b6a8648cdb7 [2025-01-10 02:32:32,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 02:32:32,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 02:32:32,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 02:32:32,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 02:32:32,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 02:32:32,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:32,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bb72c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32, skipping insertion in model container [2025-01-10 02:32:32,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:32,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 02:32:32,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:32:32,943 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 02:32:32,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:32:32,965 INFO L204 MainTranslator]: Completed translation [2025-01-10 02:32:32,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32 WrapperNode [2025-01-10 02:32:32,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 02:32:32,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 02:32:32,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 02:32:32,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 02:32:32,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:32,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:32,987 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-01-10 02:32:32,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 02:32:32,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 02:32:32,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 02:32:32,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 02:32:32,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:32,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:32,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,005 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]. [2025-01-10 02:32:33,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,007 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 02:32:33,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 02:32:33,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 02:32:33,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 02:32:33,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (1/1) ... [2025-01-10 02:32:33,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:32:33,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:33,039 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) [2025-01-10 02:32:33,042 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 [2025-01-10 02:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 02:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 02:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-01-10 02:32:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-01-10 02:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-01-10 02:32:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-01-10 02:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 02:32:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 02:32:33,113 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 02:32:33,114 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 02:32:33,228 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-01-10 02:32:33,230 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 02:32:33,239 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 02:32:33,240 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 02:32:33,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:33 BoogieIcfgContainer [2025-01-10 02:32:33,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 02:32:33,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 02:32:33,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 02:32:33,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 02:32:33,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:32:32" (1/3) ... [2025-01-10 02:32:33,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae5df5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:33, skipping insertion in model container [2025-01-10 02:32:33,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:32" (2/3) ... [2025-01-10 02:32:33,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae5df5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:33, skipping insertion in model container [2025-01-10 02:32:33,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:33" (3/3) ... [2025-01-10 02:32:33,250 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2025-01-10 02:32:33,261 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 02:32:33,262 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_8-2.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-01-10 02:32:33,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 02:32:33,314 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;@7be3e6e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 02:32:33,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-01-10 02:32:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 02:32:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-10 02:32:33,322 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:33,322 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:33,322 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:33,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2025-01-10 02:32:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:33,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340600763] [2025-01-10 02:32:33,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:33,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 02:32:33,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 02:32:33,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:33,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:33,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:33,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340600763] [2025-01-10 02:32:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340600763] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:33,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 02:32:33,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920860235] [2025-01-10 02:32:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:33,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 02:32:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:33,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 02:32:33,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 02:32:33,458 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:33,485 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2025-01-10 02:32:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 02:32:33,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-10 02:32:33,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:33,491 INFO L225 Difference]: With dead ends: 59 [2025-01-10 02:32:33,491 INFO L226 Difference]: Without dead ends: 45 [2025-01-10 02:32:33,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 02:32:33,494 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:33,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-01-10 02:32:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-01-10 02:32:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-10 02:32:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-01-10 02:32:33,517 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2025-01-10 02:32:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:33,518 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-01-10 02:32:33,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-01-10 02:32:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-10 02:32:33,518 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:33,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:33,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 02:32:33,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:33,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2025-01-10 02:32:33,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536409054] [2025-01-10 02:32:33,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:33,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 02:32:33,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 02:32:33,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:33,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:33,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:33,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536409054] [2025-01-10 02:32:33,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536409054] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:33,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:33,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:33,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716194704] [2025-01-10 02:32:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:33,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:33,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:33,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:33,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:33,564 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:33,617 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2025-01-10 02:32:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:33,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-10 02:32:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:33,618 INFO L225 Difference]: With dead ends: 64 [2025-01-10 02:32:33,618 INFO L226 Difference]: Without dead ends: 58 [2025-01-10 02:32:33,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:32:33,619 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:33,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-01-10 02:32:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2025-01-10 02:32:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 02:32:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2025-01-10 02:32:33,625 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2025-01-10 02:32:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:33,625 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2025-01-10 02:32:33,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2025-01-10 02:32:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 02:32:33,626 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:33,626 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:33,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 02:32:33,626 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:33,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2025-01-10 02:32:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551531805] [2025-01-10 02:32:33,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:33,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 02:32:33,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 02:32:33,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:33,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:33,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551531805] [2025-01-10 02:32:33,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551531805] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:33,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:33,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 02:32:33,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356421264] [2025-01-10 02:32:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:33,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 02:32:33,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:33,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 02:32:33,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 02:32:33,661 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:33,679 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2025-01-10 02:32:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 02:32:33,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-10 02:32:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:33,680 INFO L225 Difference]: With dead ends: 58 [2025-01-10 02:32:33,680 INFO L226 Difference]: Without dead ends: 56 [2025-01-10 02:32:33,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 02:32:33,680 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:33,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-01-10 02:32:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2025-01-10 02:32:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 02:32:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-01-10 02:32:33,686 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2025-01-10 02:32:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:33,687 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-01-10 02:32:33,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-01-10 02:32:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-10 02:32:33,687 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:33,687 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:33,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 02:32:33,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:33,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2025-01-10 02:32:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975840568] [2025-01-10 02:32:33,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:33,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 02:32:33,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 02:32:33,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:33,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:33,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:33,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975840568] [2025-01-10 02:32:33,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975840568] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:33,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:33,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:32:33,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332825044] [2025-01-10 02:32:33,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:33,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:32:33,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:33,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:32:33,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:32:33,798 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:33,909 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2025-01-10 02:32:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:32:33,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-10 02:32:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:33,911 INFO L225 Difference]: With dead ends: 58 [2025-01-10 02:32:33,911 INFO L226 Difference]: Without dead ends: 54 [2025-01-10 02:32:33,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-10 02:32:33,913 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:33,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:32:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-01-10 02:32:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2025-01-10 02:32:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 02:32:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-01-10 02:32:33,925 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2025-01-10 02:32:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:33,926 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-01-10 02:32:33,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:32:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-01-10 02:32:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-10 02:32:33,926 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:33,926 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:33,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 02:32:33,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:33,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:33,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2025-01-10 02:32:33,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:33,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52393131] [2025-01-10 02:32:33,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:33,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:33,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 02:32:33,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 02:32:33,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:33,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:32:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52393131] [2025-01-10 02:32:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52393131] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:34,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:34,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731688104] [2025-01-10 02:32:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:34,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:34,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:34,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,062 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:34,095 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2025-01-10 02:32:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:34,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-01-10 02:32:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:34,096 INFO L225 Difference]: With dead ends: 74 [2025-01-10 02:32:34,097 INFO L226 Difference]: Without dead ends: 69 [2025-01-10 02:32:34,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,097 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:34,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:34,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-01-10 02:32:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-01-10 02:32:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2025-01-10 02:32:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2025-01-10 02:32:34,105 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2025-01-10 02:32:34,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:34,105 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2025-01-10 02:32:34,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2025-01-10 02:32:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-10 02:32:34,106 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,106 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:34,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 02:32:34,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:34,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2025-01-10 02:32:34,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219923764] [2025-01-10 02:32:34,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:32:34,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:32:34,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:32:34,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219923764] [2025-01-10 02:32:34,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219923764] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:34,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390351094] [2025-01-10 02:32:34,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:34,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:34,201 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) [2025-01-10 02:32:34,206 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 [2025-01-10 02:32:34,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:32:34,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:32:34,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 02:32:34,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:34,368 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:32:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390351094] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:34,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:32:34,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-01-10 02:32:34,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352900144] [2025-01-10 02:32:34,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:34,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:32:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:34,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:32:34,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:32:34,370 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:34,465 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2025-01-10 02:32:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:32:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-01-10 02:32:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:34,466 INFO L225 Difference]: With dead ends: 113 [2025-01-10 02:32:34,467 INFO L226 Difference]: Without dead ends: 63 [2025-01-10 02:32:34,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-01-10 02:32:34,468 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:34,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:32:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-10 02:32:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2025-01-10 02:32:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2025-01-10 02:32:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2025-01-10 02:32:34,476 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2025-01-10 02:32:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:34,477 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2025-01-10 02:32:34,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2025-01-10 02:32:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-10 02:32:34,477 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,477 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:34,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 02:32:34,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:34,682 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:34,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2025-01-10 02:32:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840809285] [2025-01-10 02:32:34,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 02:32:34,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 02:32:34,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:32:34,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840809285] [2025-01-10 02:32:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840809285] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:34,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:34,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:34,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198342570] [2025-01-10 02:32:34,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:34,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:34,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:34,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:34,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,750 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:34,782 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2025-01-10 02:32:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:34,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2025-01-10 02:32:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:34,784 INFO L225 Difference]: With dead ends: 83 [2025-01-10 02:32:34,785 INFO L226 Difference]: Without dead ends: 78 [2025-01-10 02:32:34,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,786 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 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 [2025-01-10 02:32:34,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-01-10 02:32:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2025-01-10 02:32:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2025-01-10 02:32:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2025-01-10 02:32:34,798 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2025-01-10 02:32:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:34,798 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2025-01-10 02:32:34,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2025-01-10 02:32:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-10 02:32:34,799 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,799 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:34,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 02:32:34,799 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:34,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2025-01-10 02:32:34,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268432167] [2025-01-10 02:32:34,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-10 02:32:34,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-10 02:32:34,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:32:34,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268432167] [2025-01-10 02:32:34,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268432167] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:34,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:34,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:34,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812860082] [2025-01-10 02:32:34,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:34,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:34,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:34,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:34,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,850 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:34,889 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2025-01-10 02:32:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:34,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-01-10 02:32:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:34,890 INFO L225 Difference]: With dead ends: 83 [2025-01-10 02:32:34,890 INFO L226 Difference]: Without dead ends: 81 [2025-01-10 02:32:34,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,891 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 156 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 [2025-01-10 02:32:34,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-01-10 02:32:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2025-01-10 02:32:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2025-01-10 02:32:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2025-01-10 02:32:34,901 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2025-01-10 02:32:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:34,901 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2025-01-10 02:32:34,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2025-01-10 02:32:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-10 02:32:34,902 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,902 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:34,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 02:32:34,902 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:34,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2025-01-10 02:32:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367001123] [2025-01-10 02:32:34,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:32:34,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:32:34,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-10 02:32:34,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367001123] [2025-01-10 02:32:34,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367001123] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:34,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258830211] [2025-01-10 02:32:34,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:34,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:34,988 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) [2025-01-10 02:32:34,990 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 [2025-01-10 02:32:35,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:32:35,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:32:35,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:35,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:35,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 02:32:35,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:35,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:32:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258830211] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:35,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:35,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-01-10 02:32:35,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034053718] [2025-01-10 02:32:35,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:35,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 02:32:35,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:35,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 02:32:35,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:32:35,297 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:32:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:35,614 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions. [2025-01-10 02:32:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 02:32:35,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2025-01-10 02:32:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:35,616 INFO L225 Difference]: With dead ends: 204 [2025-01-10 02:32:35,616 INFO L226 Difference]: Without dead ends: 135 [2025-01-10 02:32:35,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2025-01-10 02:32:35,618 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 130 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:35,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 548 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:32:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-01-10 02:32:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 121. [2025-01-10 02:32:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2025-01-10 02:32:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2025-01-10 02:32:35,644 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2025-01-10 02:32:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:35,644 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2025-01-10 02:32:35,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:32:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2025-01-10 02:32:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-10 02:32:35,649 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:35,649 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:35,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:35,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:35,850 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:35,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2025-01-10 02:32:35,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:35,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063358601] [2025-01-10 02:32:35,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:35,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:35,858 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-01-10 02:32:35,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-01-10 02:32:35,870 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:35,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-10 02:32:35,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063358601] [2025-01-10 02:32:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063358601] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941085293] [2025-01-10 02:32:35,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:35,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:35,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:35,953 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) [2025-01-10 02:32:35,955 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 [2025-01-10 02:32:35,972 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-01-10 02:32:35,981 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-01-10 02:32:35,981 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:35,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:35,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 02:32:35,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-10 02:32:36,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:32:36,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941085293] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:36,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:32:36,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-01-10 02:32:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168715053] [2025-01-10 02:32:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:36,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:36,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:36,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:32:36,018 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:36,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:36,040 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2025-01-10 02:32:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2025-01-10 02:32:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:36,042 INFO L225 Difference]: With dead ends: 130 [2025-01-10 02:32:36,042 INFO L226 Difference]: Without dead ends: 129 [2025-01-10 02:32:36,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:32:36,042 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:36,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-01-10 02:32:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2025-01-10 02:32:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2025-01-10 02:32:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2025-01-10 02:32:36,054 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2025-01-10 02:32:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:36,055 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2025-01-10 02:32:36,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2025-01-10 02:32:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-10 02:32:36,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:36,057 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:36,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:36,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:36,257 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:36,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2025-01-10 02:32:36,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:36,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106320545] [2025-01-10 02:32:36,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:36,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:36,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:32:36,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:32:36,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:36,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-10 02:32:36,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:36,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106320545] [2025-01-10 02:32:36,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106320545] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:36,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220801193] [2025-01-10 02:32:36,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:36,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:36,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:36,307 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) [2025-01-10 02:32:36,308 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 [2025-01-10 02:32:36,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:32:36,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:32:36,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:36,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:36,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:32:36,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:36,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:32:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220801193] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:36,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:36,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23 [2025-01-10 02:32:36,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760322394] [2025-01-10 02:32:36,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:36,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 02:32:36,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:36,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 02:32:36,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2025-01-10 02:32:36,667 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:32:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:37,265 INFO L93 Difference]: Finished difference Result 321 states and 423 transitions. [2025-01-10 02:32:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-10 02:32:37,265 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2025-01-10 02:32:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:37,267 INFO L225 Difference]: With dead ends: 321 [2025-01-10 02:32:37,267 INFO L226 Difference]: Without dead ends: 211 [2025-01-10 02:32:37,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2025-01-10 02:32:37,268 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 174 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:37,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1015 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 02:32:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-01-10 02:32:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191. [2025-01-10 02:32:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 151 states have internal predecessors, (172), 25 states have call successors, (25), 10 states have call predecessors, (25), 13 states have return successors, (48), 29 states have call predecessors, (48), 24 states have call successors, (48) [2025-01-10 02:32:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 245 transitions. [2025-01-10 02:32:37,287 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 245 transitions. Word has length 43 [2025-01-10 02:32:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:37,287 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 245 transitions. [2025-01-10 02:32:37,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:32:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 245 transitions. [2025-01-10 02:32:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-10 02:32:37,288 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:37,288 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:37,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:37,488 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,SelfDestructingSolverStorable10 [2025-01-10 02:32:37,489 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:37,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:37,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1504919224, now seen corresponding path program 1 times [2025-01-10 02:32:37,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:37,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817797260] [2025-01-10 02:32:37,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:37,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:37,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-10 02:32:37,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-10 02:32:37,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:37,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-01-10 02:32:37,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817797260] [2025-01-10 02:32:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817797260] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073444720] [2025-01-10 02:32:37,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:37,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:37,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:37,564 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) [2025-01-10 02:32:37,566 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 [2025-01-10 02:32:37,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-10 02:32:37,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-10 02:32:37,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:37,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:37,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 02:32:37,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:37,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:32:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073444720] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:38,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:38,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24 [2025-01-10 02:32:38,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702464887] [2025-01-10 02:32:38,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:38,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 02:32:38,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:38,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 02:32:38,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2025-01-10 02:32:38,311 INFO L87 Difference]: Start difference. First operand 191 states and 245 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-01-10 02:32:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:38,791 INFO L93 Difference]: Finished difference Result 406 states and 525 transitions. [2025-01-10 02:32:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 02:32:38,791 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 60 [2025-01-10 02:32:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:38,792 INFO L225 Difference]: With dead ends: 406 [2025-01-10 02:32:38,793 INFO L226 Difference]: Without dead ends: 236 [2025-01-10 02:32:38,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 93 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2025-01-10 02:32:38,794 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 195 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:38,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1200 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:32:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-01-10 02:32:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 213. [2025-01-10 02:32:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 167 states have (on average 1.1497005988023952) internal successors, (192), 168 states have internal predecessors, (192), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 33 states have call predecessors, (54), 27 states have call successors, (54) [2025-01-10 02:32:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2025-01-10 02:32:38,804 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 60 [2025-01-10 02:32:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:38,804 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2025-01-10 02:32:38,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-01-10 02:32:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2025-01-10 02:32:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-10 02:32:38,805 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:38,805 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:38,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 02:32:39,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-10 02:32:39,006 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:39,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:39,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1710163946, now seen corresponding path program 2 times [2025-01-10 02:32:39,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:39,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432369253] [2025-01-10 02:32:39,006 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:39,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:39,009 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 60 statements into 2 equivalence classes. [2025-01-10 02:32:39,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-10 02:32:39,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:39,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-01-10 02:32:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432369253] [2025-01-10 02:32:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432369253] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890222906] [2025-01-10 02:32:39,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:39,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:39,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:39,081 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) [2025-01-10 02:32:39,084 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 [2025-01-10 02:32:39,103 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 60 statements into 2 equivalence classes. [2025-01-10 02:32:39,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-10 02:32:39,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:39,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 02:32:39,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-01-10 02:32:39,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:32:39,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890222906] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:39,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:32:39,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-01-10 02:32:39,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183459921] [2025-01-10 02:32:39,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:39,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:39,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:39,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:32:39,148 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:39,169 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2025-01-10 02:32:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2025-01-10 02:32:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:39,171 INFO L225 Difference]: With dead ends: 226 [2025-01-10 02:32:39,172 INFO L226 Difference]: Without dead ends: 225 [2025-01-10 02:32:39,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:32:39,173 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:39,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-01-10 02:32:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2025-01-10 02:32:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 175 states have (on average 1.1428571428571428) internal successors, (200), 172 states have internal predecessors, (200), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 37 states have call predecessors, (54), 27 states have call successors, (54) [2025-01-10 02:32:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 282 transitions. [2025-01-10 02:32:39,186 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 282 transitions. Word has length 60 [2025-01-10 02:32:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:39,187 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 282 transitions. [2025-01-10 02:32:39,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 282 transitions. [2025-01-10 02:32:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-10 02:32:39,187 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:39,187 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:39,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 02:32:39,388 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,SelfDestructingSolverStorable12 [2025-01-10 02:32:39,388 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:39,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1475474675, now seen corresponding path program 1 times [2025-01-10 02:32:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144162236] [2025-01-10 02:32:39,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:39,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-01-10 02:32:39,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-01-10 02:32:39,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:39,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-01-10 02:32:39,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:39,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144162236] [2025-01-10 02:32:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144162236] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:39,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566132716] [2025-01-10 02:32:39,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:39,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:39,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:39,463 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) [2025-01-10 02:32:39,471 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 [2025-01-10 02:32:39,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-01-10 02:32:39,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-01-10 02:32:39,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:39,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 02:32:39,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-01-10 02:32:39,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:32:39,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566132716] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:39,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:32:39,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-01-10 02:32:39,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912001461] [2025-01-10 02:32:39,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:39,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:32:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:39,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:32:39,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:32:39,538 INFO L87 Difference]: Start difference. First operand 221 states and 282 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:39,563 INFO L93 Difference]: Finished difference Result 237 states and 303 transitions. [2025-01-10 02:32:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 02:32:39,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2025-01-10 02:32:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:39,565 INFO L225 Difference]: With dead ends: 237 [2025-01-10 02:32:39,565 INFO L226 Difference]: Without dead ends: 236 [2025-01-10 02:32:39,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:32:39,566 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:39,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 149 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-01-10 02:32:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 217. [2025-01-10 02:32:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 172 states have (on average 1.1453488372093024) internal successors, (197), 169 states have internal predecessors, (197), 27 states have call successors, (27), 11 states have call predecessors, (27), 14 states have return successors, (51), 36 states have call predecessors, (51), 26 states have call successors, (51) [2025-01-10 02:32:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2025-01-10 02:32:39,592 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 61 [2025-01-10 02:32:39,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:39,592 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2025-01-10 02:32:39,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:32:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2025-01-10 02:32:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-01-10 02:32:39,593 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:39,593 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:39,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:39,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:39,794 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:39,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1055529936, now seen corresponding path program 1 times [2025-01-10 02:32:39,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:39,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296094067] [2025-01-10 02:32:39,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:39,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:39,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-01-10 02:32:39,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-01-10 02:32:39,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:39,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-01-10 02:32:39,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296094067] [2025-01-10 02:32:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296094067] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:39,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086261692] [2025-01-10 02:32:39,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:39,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:39,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:39,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:39,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:39,860 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:32:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:39,888 INFO L93 Difference]: Finished difference Result 227 states and 287 transitions. [2025-01-10 02:32:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:39,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2025-01-10 02:32:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:39,890 INFO L225 Difference]: With dead ends: 227 [2025-01-10 02:32:39,890 INFO L226 Difference]: Without dead ends: 226 [2025-01-10 02:32:39,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:39,891 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:39,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 143 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-01-10 02:32:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 211. [2025-01-10 02:32:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 168 states have (on average 1.1488095238095237) internal successors, (193), 164 states have internal predecessors, (193), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (43), 35 states have call predecessors, (43), 25 states have call successors, (43) [2025-01-10 02:32:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 262 transitions. [2025-01-10 02:32:39,905 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 262 transitions. Word has length 77 [2025-01-10 02:32:39,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:39,905 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 262 transitions. [2025-01-10 02:32:39,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:32:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 262 transitions. [2025-01-10 02:32:39,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-10 02:32:39,906 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:39,906 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:39,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 02:32:39,906 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:39,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1329146264, now seen corresponding path program 1 times [2025-01-10 02:32:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:39,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803406584] [2025-01-10 02:32:39,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:39,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:39,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-10 02:32:39,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-10 02:32:39,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:39,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-01-10 02:32:39,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:39,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803406584] [2025-01-10 02:32:39,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803406584] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:39,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831089858] [2025-01-10 02:32:39,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:39,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:39,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:39,956 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) [2025-01-10 02:32:39,961 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 [2025-01-10 02:32:39,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-10 02:32:39,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-10 02:32:39,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:39,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 02:32:39,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:32:40,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:32:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831089858] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:40,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:40,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 23 [2025-01-10 02:32:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141473558] [2025-01-10 02:32:40,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:40,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 02:32:40,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:40,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 02:32:40,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2025-01-10 02:32:40,395 INFO L87 Difference]: Start difference. First operand 211 states and 262 transitions. Second operand has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-01-10 02:32:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:40,934 INFO L93 Difference]: Finished difference Result 583 states and 775 transitions. [2025-01-10 02:32:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-10 02:32:40,935 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 79 [2025-01-10 02:32:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:40,937 INFO L225 Difference]: With dead ends: 583 [2025-01-10 02:32:40,937 INFO L226 Difference]: Without dead ends: 393 [2025-01-10 02:32:40,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 130 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2025-01-10 02:32:40,939 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 265 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:40,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 383 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:32:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2025-01-10 02:32:40,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 362. [2025-01-10 02:32:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 290 states have (on average 1.1413793103448275) internal successors, (331), 281 states have internal predecessors, (331), 45 states have call successors, (45), 18 states have call predecessors, (45), 23 states have return successors, (77), 62 states have call predecessors, (77), 44 states have call successors, (77) [2025-01-10 02:32:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 453 transitions. [2025-01-10 02:32:40,963 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 453 transitions. Word has length 79 [2025-01-10 02:32:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:40,963 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 453 transitions. [2025-01-10 02:32:40,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-01-10 02:32:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 453 transitions. [2025-01-10 02:32:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-10 02:32:40,966 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:40,966 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:40,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 02:32:41,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-10 02:32:41,171 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:41,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash -932529083, now seen corresponding path program 1 times [2025-01-10 02:32:41,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:41,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309340183] [2025-01-10 02:32:41,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:41,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-10 02:32:41,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-10 02:32:41,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:41,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-01-10 02:32:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309340183] [2025-01-10 02:32:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309340183] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:41,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:41,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:41,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759605832] [2025-01-10 02:32:41,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:41,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:41,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:41,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:41,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:41,228 INFO L87 Difference]: Start difference. First operand 362 states and 453 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:32:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:41,251 INFO L93 Difference]: Finished difference Result 390 states and 492 transitions. [2025-01-10 02:32:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2025-01-10 02:32:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:41,253 INFO L225 Difference]: With dead ends: 390 [2025-01-10 02:32:41,253 INFO L226 Difference]: Without dead ends: 389 [2025-01-10 02:32:41,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:41,253 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:41,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-01-10 02:32:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 375. [2025-01-10 02:32:41,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 301 states have (on average 1.1362126245847175) internal successors, (342), 291 states have internal predecessors, (342), 45 states have call successors, (45), 18 states have call predecessors, (45), 25 states have return successors, (86), 65 states have call predecessors, (86), 44 states have call successors, (86) [2025-01-10 02:32:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 473 transitions. [2025-01-10 02:32:41,270 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 473 transitions. Word has length 74 [2025-01-10 02:32:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:41,271 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 473 transitions. [2025-01-10 02:32:41,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:32:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 473 transitions. [2025-01-10 02:32:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-01-10 02:32:41,272 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:41,272 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:41,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-10 02:32:41,272 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:41,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1524107692, now seen corresponding path program 1 times [2025-01-10 02:32:41,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:41,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079456035] [2025-01-10 02:32:41,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:41,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:41,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-01-10 02:32:41,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-01-10 02:32:41,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:41,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2025-01-10 02:32:41,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079456035] [2025-01-10 02:32:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079456035] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208791508] [2025-01-10 02:32:41,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:41,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:41,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:41,361 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) [2025-01-10 02:32:41,369 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 [2025-01-10 02:32:41,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-01-10 02:32:41,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-01-10 02:32:41,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:41,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:41,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:32:41,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-01-10 02:32:41,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:32:41,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208791508] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:32:41,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2025-01-10 02:32:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244581161] [2025-01-10 02:32:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:41,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 02:32:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:41,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 02:32:41,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:32:41,468 INFO L87 Difference]: Start difference. First operand 375 states and 473 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:32:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:41,521 INFO L93 Difference]: Finished difference Result 481 states and 631 transitions. [2025-01-10 02:32:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 02:32:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 75 [2025-01-10 02:32:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:41,523 INFO L225 Difference]: With dead ends: 481 [2025-01-10 02:32:41,523 INFO L226 Difference]: Without dead ends: 480 [2025-01-10 02:32:41,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:32:41,524 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:41,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 202 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2025-01-10 02:32:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 411. [2025-01-10 02:32:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 330 states have (on average 1.1393939393939394) internal successors, (376), 317 states have internal predecessors, (376), 48 states have call successors, (48), 18 states have call predecessors, (48), 29 states have return successors, (111), 75 states have call predecessors, (111), 47 states have call successors, (111) [2025-01-10 02:32:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 535 transitions. [2025-01-10 02:32:41,541 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 535 transitions. Word has length 75 [2025-01-10 02:32:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:41,541 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 535 transitions. [2025-01-10 02:32:41,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:32:41,541 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 535 transitions. [2025-01-10 02:32:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-10 02:32:41,542 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:41,542 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:41,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 02:32:41,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 02:32:41,743 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:41,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -121328009, now seen corresponding path program 1 times [2025-01-10 02:32:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:41,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950126929] [2025-01-10 02:32:41,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:41,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:41,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-10 02:32:41,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-10 02:32:41,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:41,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-01-10 02:32:41,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:41,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950126929] [2025-01-10 02:32:41,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950126929] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:41,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422248935] [2025-01-10 02:32:41,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:41,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:41,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:41,781 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) [2025-01-10 02:32:41,782 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 [2025-01-10 02:32:41,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-10 02:32:41,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-10 02:32:41,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:41,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:41,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-10 02:32:41,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 75 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:32:42,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 75 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:32:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422248935] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:42,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 21, 21] total 42 [2025-01-10 02:32:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111948545] [2025-01-10 02:32:42,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:42,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-01-10 02:32:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:42,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-01-10 02:32:42,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2025-01-10 02:32:42,320 INFO L87 Difference]: Start difference. First operand 411 states and 535 transitions. Second operand has 42 states, 40 states have (on average 3.325) internal successors, (133), 26 states have internal predecessors, (133), 21 states have call successors, (27), 17 states have call predecessors, (27), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-10 02:32:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:43,099 INFO L93 Difference]: Finished difference Result 842 states and 1139 transitions. [2025-01-10 02:32:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-10 02:32:43,100 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 3.325) internal successors, (133), 26 states have internal predecessors, (133), 21 states have call successors, (27), 17 states have call predecessors, (27), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 84 [2025-01-10 02:32:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:43,102 INFO L225 Difference]: With dead ends: 842 [2025-01-10 02:32:43,102 INFO L226 Difference]: Without dead ends: 487 [2025-01-10 02:32:43,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=712, Invalid=3980, Unknown=0, NotChecked=0, Total=4692 [2025-01-10 02:32:43,105 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 533 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:43,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 542 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 02:32:43,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2025-01-10 02:32:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 436. [2025-01-10 02:32:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 348 states have (on average 1.1293103448275863) internal successors, (393), 339 states have internal predecessors, (393), 52 states have call successors, (52), 20 states have call predecessors, (52), 32 states have return successors, (113), 76 states have call predecessors, (113), 51 states have call successors, (113) [2025-01-10 02:32:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 558 transitions. [2025-01-10 02:32:43,121 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 558 transitions. Word has length 84 [2025-01-10 02:32:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:43,122 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 558 transitions. [2025-01-10 02:32:43,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 3.325) internal successors, (133), 26 states have internal predecessors, (133), 21 states have call successors, (27), 17 states have call predecessors, (27), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-10 02:32:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 558 transitions. [2025-01-10 02:32:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-10 02:32:43,122 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:43,122 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:43,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:43,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:43,323 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:43,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash 679118242, now seen corresponding path program 1 times [2025-01-10 02:32:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770801260] [2025-01-10 02:32:43,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:43,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-01-10 02:32:43,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-01-10 02:32:43,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:43,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-10 02:32:43,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770801260] [2025-01-10 02:32:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770801260] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:43,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487500757] [2025-01-10 02:32:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:43,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:43,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:43,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:43,359 INFO L87 Difference]: Start difference. First operand 436 states and 558 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:32:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:43,383 INFO L93 Difference]: Finished difference Result 452 states and 577 transitions. [2025-01-10 02:32:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:43,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 79 [2025-01-10 02:32:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:43,385 INFO L225 Difference]: With dead ends: 452 [2025-01-10 02:32:43,385 INFO L226 Difference]: Without dead ends: 451 [2025-01-10 02:32:43,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:43,386 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:43,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2025-01-10 02:32:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 438. [2025-01-10 02:32:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 349 states have (on average 1.1232091690544412) internal successors, (392), 341 states have internal predecessors, (392), 52 states have call successors, (52), 20 states have call predecessors, (52), 33 states have return successors, (115), 76 states have call predecessors, (115), 51 states have call successors, (115) [2025-01-10 02:32:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 559 transitions. [2025-01-10 02:32:43,421 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 559 transitions. Word has length 79 [2025-01-10 02:32:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:43,422 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 559 transitions. [2025-01-10 02:32:43,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:32:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 559 transitions. [2025-01-10 02:32:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-01-10 02:32:43,423 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:43,423 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:43,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-10 02:32:43,423 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:43,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash -916701128, now seen corresponding path program 1 times [2025-01-10 02:32:43,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:43,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799190173] [2025-01-10 02:32:43,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:43,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:43,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-01-10 02:32:43,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-01-10 02:32:43,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:43,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-10 02:32:43,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:43,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799190173] [2025-01-10 02:32:43,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799190173] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:43,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097515612] [2025-01-10 02:32:43,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:43,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:43,650 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) [2025-01-10 02:32:43,651 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 [2025-01-10 02:32:43,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-01-10 02:32:43,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-01-10 02:32:43,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:43,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:43,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 02:32:43,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2025-01-10 02:32:43,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2025-01-10 02:32:43,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097515612] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:43,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:43,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31 [2025-01-10 02:32:43,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128573702] [2025-01-10 02:32:43,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:43,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-10 02:32:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:43,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-10 02:32:43,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2025-01-10 02:32:43,967 INFO L87 Difference]: Start difference. First operand 438 states and 559 transitions. Second operand has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-10 02:32:44,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:44,953 INFO L93 Difference]: Finished difference Result 940 states and 1243 transitions. [2025-01-10 02:32:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-01-10 02:32:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 92 [2025-01-10 02:32:44,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:44,956 INFO L225 Difference]: With dead ends: 940 [2025-01-10 02:32:44,956 INFO L226 Difference]: Without dead ends: 577 [2025-01-10 02:32:44,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=612, Invalid=4080, Unknown=0, NotChecked=0, Total=4692 [2025-01-10 02:32:44,959 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 265 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:44,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 442 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 02:32:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2025-01-10 02:32:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 437. [2025-01-10 02:32:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 346 states have (on average 1.1098265895953756) internal successors, (384), 343 states have internal predecessors, (384), 53 states have call successors, (53), 20 states have call predecessors, (53), 34 states have return successors, (131), 73 states have call predecessors, (131), 52 states have call successors, (131) [2025-01-10 02:32:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 568 transitions. [2025-01-10 02:32:44,977 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 568 transitions. Word has length 92 [2025-01-10 02:32:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:44,977 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 568 transitions. [2025-01-10 02:32:44,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-10 02:32:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 568 transitions. [2025-01-10 02:32:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-10 02:32:44,979 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:44,979 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:44,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 02:32:45,179 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,SelfDestructingSolverStorable20 [2025-01-10 02:32:45,180 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:45,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1108261630, now seen corresponding path program 1 times [2025-01-10 02:32:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:45,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845394779] [2025-01-10 02:32:45,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:45,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:45,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 02:32:45,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 02:32:45,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:45,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-10 02:32:45,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:45,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845394779] [2025-01-10 02:32:45,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845394779] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:45,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375693427] [2025-01-10 02:32:45,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:45,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:45,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:45,345 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) [2025-01-10 02:32:45,355 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 [2025-01-10 02:32:45,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 02:32:45,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 02:32:45,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:45,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:45,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 02:32:45,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-10 02:32:45,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-10 02:32:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375693427] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:45,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:45,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2025-01-10 02:32:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138649913] [2025-01-10 02:32:45,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:45,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 02:32:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:45,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 02:32:45,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:32:45,660 INFO L87 Difference]: Start difference. First operand 437 states and 568 transitions. Second operand has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-01-10 02:32:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:45,957 INFO L93 Difference]: Finished difference Result 841 states and 1097 transitions. [2025-01-10 02:32:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 02:32:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 88 [2025-01-10 02:32:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:45,961 INFO L225 Difference]: With dead ends: 841 [2025-01-10 02:32:45,961 INFO L226 Difference]: Without dead ends: 468 [2025-01-10 02:32:45,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 167 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2025-01-10 02:32:45,963 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 158 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:45,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 586 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:32:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2025-01-10 02:32:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 437. [2025-01-10 02:32:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 346 states have (on average 1.1098265895953756) internal successors, (384), 343 states have internal predecessors, (384), 53 states have call successors, (53), 20 states have call predecessors, (53), 34 states have return successors, (123), 73 states have call predecessors, (123), 52 states have call successors, (123) [2025-01-10 02:32:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 560 transitions. [2025-01-10 02:32:45,989 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 560 transitions. Word has length 88 [2025-01-10 02:32:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:45,989 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 560 transitions. [2025-01-10 02:32:45,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-01-10 02:32:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 560 transitions. [2025-01-10 02:32:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-01-10 02:32:45,990 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:45,990 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:45,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-10 02:32:46,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:46,192 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:46,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash 870027817, now seen corresponding path program 1 times [2025-01-10 02:32:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:46,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329943932] [2025-01-10 02:32:46,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:46,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-01-10 02:32:46,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 02:32:46,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:46,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-10 02:32:46,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329943932] [2025-01-10 02:32:46,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329943932] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731431912] [2025-01-10 02:32:46,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:46,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:46,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:46,333 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) [2025-01-10 02:32:46,334 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 [2025-01-10 02:32:46,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-01-10 02:32:46,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 02:32:46,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:46,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:46,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:32:46,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-10 02:32:46,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-10 02:32:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731431912] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:46,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2025-01-10 02:32:46,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92415144] [2025-01-10 02:32:46,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:46,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:32:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:46,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:32:46,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:32:46,542 INFO L87 Difference]: Start difference. First operand 437 states and 560 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-10 02:32:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:46,732 INFO L93 Difference]: Finished difference Result 793 states and 1022 transitions. [2025-01-10 02:32:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 02:32:46,733 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2025-01-10 02:32:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:46,735 INFO L225 Difference]: With dead ends: 793 [2025-01-10 02:32:46,735 INFO L226 Difference]: Without dead ends: 441 [2025-01-10 02:32:46,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 170 SyntacticMatches, 12 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:32:46,737 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 142 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:46,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 442 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:32:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2025-01-10 02:32:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 431. [2025-01-10 02:32:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 340 states have (on average 1.111764705882353) internal successors, (378), 340 states have internal predecessors, (378), 53 states have call successors, (53), 20 states have call predecessors, (53), 34 states have return successors, (120), 70 states have call predecessors, (120), 52 states have call successors, (120) [2025-01-10 02:32:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 551 transitions. [2025-01-10 02:32:46,754 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 551 transitions. Word has length 89 [2025-01-10 02:32:46,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:46,755 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 551 transitions. [2025-01-10 02:32:46,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-10 02:32:46,755 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 551 transitions. [2025-01-10 02:32:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-10 02:32:46,756 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:46,756 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:46,762 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 [2025-01-10 02:32:46,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:46,960 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:46,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1952719999, now seen corresponding path program 1 times [2025-01-10 02:32:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482605994] [2025-01-10 02:32:46,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:46,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-10 02:32:46,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-10 02:32:46,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:46,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 47 proven. 72 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:32:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482605994] [2025-01-10 02:32:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482605994] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880372794] [2025-01-10 02:32:47,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:47,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:47,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:47,187 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) [2025-01-10 02:32:47,189 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 [2025-01-10 02:32:47,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-10 02:32:47,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-10 02:32:47,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:47,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:47,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 02:32:47,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-01-10 02:32:47,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-01-10 02:32:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880372794] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:47,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9, 11] total 36 [2025-01-10 02:32:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709491126] [2025-01-10 02:32:47,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:47,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-10 02:32:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:47,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-10 02:32:47,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2025-01-10 02:32:47,704 INFO L87 Difference]: Start difference. First operand 431 states and 551 transitions. Second operand has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-01-10 02:32:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:49,527 INFO L93 Difference]: Finished difference Result 1151 states and 1605 transitions. [2025-01-10 02:32:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-01-10 02:32:49,528 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 93 [2025-01-10 02:32:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:49,531 INFO L225 Difference]: With dead ends: 1151 [2025-01-10 02:32:49,531 INFO L226 Difference]: Without dead ends: 772 [2025-01-10 02:32:49,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1349, Invalid=9781, Unknown=0, NotChecked=0, Total=11130 [2025-01-10 02:32:49,535 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 391 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:49,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 503 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-10 02:32:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2025-01-10 02:32:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 605. [2025-01-10 02:32:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 479 states have (on average 1.1085594989561587) internal successors, (531), 470 states have internal predecessors, (531), 71 states have call successors, (71), 20 states have call predecessors, (71), 51 states have return successors, (261), 114 states have call predecessors, (261), 70 states have call successors, (261) [2025-01-10 02:32:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 863 transitions. [2025-01-10 02:32:49,562 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 863 transitions. Word has length 93 [2025-01-10 02:32:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:49,562 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 863 transitions. [2025-01-10 02:32:49,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-01-10 02:32:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 863 transitions. [2025-01-10 02:32:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-01-10 02:32:49,563 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:49,563 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:49,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 02:32:49,767 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,SelfDestructingSolverStorable23 [2025-01-10 02:32:49,767 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:49,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1507205499, now seen corresponding path program 1 times [2025-01-10 02:32:49,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:49,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419942196] [2025-01-10 02:32:49,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:49,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-01-10 02:32:49,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-01-10 02:32:49,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:49,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-01-10 02:32:49,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419942196] [2025-01-10 02:32:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419942196] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558900855] [2025-01-10 02:32:49,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:49,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:49,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:49,813 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) [2025-01-10 02:32:49,818 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 [2025-01-10 02:32:49,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-01-10 02:32:49,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-01-10 02:32:49,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:49,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:49,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 02:32:49,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-10 02:32:50,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-10 02:32:50,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558900855] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:50,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:50,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 21 [2025-01-10 02:32:50,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776915854] [2025-01-10 02:32:50,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:50,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 02:32:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:50,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 02:32:50,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:32:50,235 INFO L87 Difference]: Start difference. First operand 605 states and 863 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-10 02:32:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:50,510 INFO L93 Difference]: Finished difference Result 1108 states and 1642 transitions. [2025-01-10 02:32:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 02:32:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 106 [2025-01-10 02:32:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:50,514 INFO L225 Difference]: With dead ends: 1108 [2025-01-10 02:32:50,514 INFO L226 Difference]: Without dead ends: 567 [2025-01-10 02:32:50,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2025-01-10 02:32:50,517 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 205 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:50,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 469 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:32:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-01-10 02:32:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 557. [2025-01-10 02:32:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 439 states have (on average 1.1002277904328017) internal successors, (483), 436 states have internal predecessors, (483), 66 states have call successors, (66), 20 states have call predecessors, (66), 48 states have return successors, (199), 100 states have call predecessors, (199), 65 states have call successors, (199) [2025-01-10 02:32:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 748 transitions. [2025-01-10 02:32:50,545 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 748 transitions. Word has length 106 [2025-01-10 02:32:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:50,545 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 748 transitions. [2025-01-10 02:32:50,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-10 02:32:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 748 transitions. [2025-01-10 02:32:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-10 02:32:50,547 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:50,547 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:50,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:50,747 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,SelfDestructingSolverStorable24 [2025-01-10 02:32:50,747 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:50,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:50,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1606036922, now seen corresponding path program 2 times [2025-01-10 02:32:50,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:50,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461590061] [2025-01-10 02:32:50,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:50,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:50,753 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-01-10 02:32:50,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-01-10 02:32:50,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:50,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-10 02:32:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:50,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461590061] [2025-01-10 02:32:50,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461590061] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265257876] [2025-01-10 02:32:50,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:50,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:50,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:50,933 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) [2025-01-10 02:32:50,945 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 [2025-01-10 02:32:50,972 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-01-10 02:32:50,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-01-10 02:32:50,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:50,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:50,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 02:32:50,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-10 02:32:51,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-10 02:32:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265257876] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:51,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:51,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-01-10 02:32:51,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848992122] [2025-01-10 02:32:51,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:51,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-10 02:32:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:51,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-10 02:32:51,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2025-01-10 02:32:51,537 INFO L87 Difference]: Start difference. First operand 557 states and 748 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-01-10 02:32:51,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:51,989 INFO L93 Difference]: Finished difference Result 1074 states and 1626 transitions. [2025-01-10 02:32:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-01-10 02:32:51,989 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 107 [2025-01-10 02:32:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:51,993 INFO L225 Difference]: With dead ends: 1074 [2025-01-10 02:32:51,993 INFO L226 Difference]: Without dead ends: 1071 [2025-01-10 02:32:51,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=2561, Unknown=0, NotChecked=0, Total=2970 [2025-01-10 02:32:51,995 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 44 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:51,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 619 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:32:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2025-01-10 02:32:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 794. [2025-01-10 02:32:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 630 states have (on average 1.0825396825396825) internal successors, (682), 617 states have internal predecessors, (682), 86 states have call successors, (86), 20 states have call predecessors, (86), 74 states have return successors, (390), 156 states have call predecessors, (390), 85 states have call successors, (390) [2025-01-10 02:32:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1158 transitions. [2025-01-10 02:32:52,030 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1158 transitions. Word has length 107 [2025-01-10 02:32:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:52,031 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1158 transitions. [2025-01-10 02:32:52,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-01-10 02:32:52,031 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1158 transitions. [2025-01-10 02:32:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-01-10 02:32:52,032 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:52,032 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:52,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:52,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:52,236 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:52,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1752462871, now seen corresponding path program 1 times [2025-01-10 02:32:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580262480] [2025-01-10 02:32:52,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:52,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-01-10 02:32:52,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-01-10 02:32:52,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:52,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-10 02:32:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580262480] [2025-01-10 02:32:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580262480] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453063661] [2025-01-10 02:32:52,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:52,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:52,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:52,453 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:32:52,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 02:32:52,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-01-10 02:32:52,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-01-10 02:32:52,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:52,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:52,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 02:32:52,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-10 02:32:52,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-10 02:32:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453063661] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:53,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2025-01-10 02:32:53,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499074886] [2025-01-10 02:32:53,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:53,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-10 02:32:53,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:53,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-10 02:32:53,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2025-01-10 02:32:53,003 INFO L87 Difference]: Start difference. First operand 794 states and 1158 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-01-10 02:32:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:53,315 INFO L93 Difference]: Finished difference Result 1225 states and 1902 transitions. [2025-01-10 02:32:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-10 02:32:53,316 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 108 [2025-01-10 02:32:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:53,321 INFO L225 Difference]: With dead ends: 1225 [2025-01-10 02:32:53,321 INFO L226 Difference]: Without dead ends: 1223 [2025-01-10 02:32:53,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=1707, Unknown=0, NotChecked=0, Total=1980 [2025-01-10 02:32:53,322 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:53,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 659 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:32:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2025-01-10 02:32:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 900. [2025-01-10 02:32:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 714 states have (on average 1.072829131652661) internal successors, (766), 699 states have internal predecessors, (766), 95 states have call successors, (95), 20 states have call predecessors, (95), 87 states have return successors, (534), 180 states have call predecessors, (534), 94 states have call successors, (534) [2025-01-10 02:32:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1395 transitions. [2025-01-10 02:32:53,379 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1395 transitions. Word has length 108 [2025-01-10 02:32:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:53,380 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1395 transitions. [2025-01-10 02:32:53,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-01-10 02:32:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1395 transitions. [2025-01-10 02:32:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-10 02:32:53,381 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:53,381 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:53,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 02:32:53,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:53,589 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:53,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1104785409, now seen corresponding path program 1 times [2025-01-10 02:32:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460280832] [2025-01-10 02:32:53,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:53,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:53,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-10 02:32:53,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-10 02:32:53,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:53,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-01-10 02:32:53,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:53,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460280832] [2025-01-10 02:32:53,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460280832] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:53,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181793478] [2025-01-10 02:32:53,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:53,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:53,724 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:32:53,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 02:32:53,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-10 02:32:53,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-10 02:32:53,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:53,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:53,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:32:53,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-01-10 02:32:53,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-01-10 02:32:54,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181793478] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:54,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:54,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2025-01-10 02:32:54,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523041044] [2025-01-10 02:32:54,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:54,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 02:32:54,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:54,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 02:32:54,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2025-01-10 02:32:54,039 INFO L87 Difference]: Start difference. First operand 900 states and 1395 transitions. Second operand has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-01-10 02:32:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:54,281 INFO L93 Difference]: Finished difference Result 1743 states and 2758 transitions. [2025-01-10 02:32:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 02:32:54,282 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 142 [2025-01-10 02:32:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:54,287 INFO L225 Difference]: With dead ends: 1743 [2025-01-10 02:32:54,287 INFO L226 Difference]: Without dead ends: 921 [2025-01-10 02:32:54,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 275 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:32:54,291 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 152 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:54,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 375 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:32:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2025-01-10 02:32:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 912. [2025-01-10 02:32:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 724 states have (on average 1.0704419889502763) internal successors, (775), 708 states have internal predecessors, (775), 96 states have call successors, (96), 20 states have call predecessors, (96), 88 states have return successors, (539), 183 states have call predecessors, (539), 95 states have call successors, (539) [2025-01-10 02:32:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1410 transitions. [2025-01-10 02:32:54,351 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1410 transitions. Word has length 142 [2025-01-10 02:32:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:54,351 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1410 transitions. [2025-01-10 02:32:54,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-01-10 02:32:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1410 transitions. [2025-01-10 02:32:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-01-10 02:32:54,352 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:54,353 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2025-01-10 02:32:54,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-10 02:32:54,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-10 02:32:54,554 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:32:54,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash 716233084, now seen corresponding path program 2 times [2025-01-10 02:32:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:54,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013170357] [2025-01-10 02:32:54,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:54,559 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-01-10 02:32:54,567 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-01-10 02:32:54,568 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:54,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 156 proven. 148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-01-10 02:32:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013170357] [2025-01-10 02:32:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013170357] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903883061] [2025-01-10 02:32:54,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:54,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:54,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:54,767 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:32:54,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 02:32:54,801 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-01-10 02:32:54,826 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-01-10 02:32:54,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:54,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:54,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-10 02:32:54,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2025-01-10 02:32:55,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 111 proven. 55 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2025-01-10 02:32:56,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903883061] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:56,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:56,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 24] total 55 [2025-01-10 02:32:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981748043] [2025-01-10 02:32:56,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:56,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-01-10 02:32:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:56,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-01-10 02:32:56,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2733, Unknown=0, NotChecked=0, Total=2970 [2025-01-10 02:32:56,721 INFO L87 Difference]: Start difference. First operand 912 states and 1410 transitions. Second operand has 55 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 51 states have internal predecessors, (186), 21 states have call successors, (27), 5 states have call predecessors, (27), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) [2025-01-10 02:32:59,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:59,768 INFO L93 Difference]: Finished difference Result 2602 states and 4512 transitions. [2025-01-10 02:32:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2025-01-10 02:32:59,769 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 51 states have internal predecessors, (186), 21 states have call successors, (27), 5 states have call predecessors, (27), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) Word has length 179 [2025-01-10 02:32:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:59,778 INFO L225 Difference]: With dead ends: 2602 [2025-01-10 02:32:59,778 INFO L226 Difference]: Without dead ends: 1774 [2025-01-10 02:32:59,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 309 SyntacticMatches, 16 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7726 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2543, Invalid=20409, Unknown=0, NotChecked=0, Total=22952 [2025-01-10 02:32:59,790 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 467 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 3289 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 3289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:59,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 564 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 3289 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-10 02:32:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2025-01-10 02:32:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1126. [2025-01-10 02:32:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 890 states have (on average 1.049438202247191) internal successors, (934), 875 states have internal predecessors, (934), 113 states have call successors, (113), 20 states have call predecessors, (113), 119 states have return successors, (858), 230 states have call predecessors, (858), 112 states have call successors, (858) [2025-01-10 02:32:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1905 transitions. [2025-01-10 02:32:59,862 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1905 transitions. Word has length 179 [2025-01-10 02:32:59,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:59,863 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1905 transitions. [2025-01-10 02:32:59,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 51 states have internal predecessors, (186), 21 states have call successors, (27), 5 states have call predecessors, (27), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) [2025-01-10 02:32:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1905 transitions. [2025-01-10 02:32:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-01-10 02:32:59,865 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:59,865 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1] [2025-01-10 02:32:59,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 02:33:00,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:00,070 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:00,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:00,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1601990729, now seen corresponding path program 2 times [2025-01-10 02:33:00,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:00,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735972067] [2025-01-10 02:33:00,071 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:33:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:00,077 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 214 statements into 2 equivalence classes. [2025-01-10 02:33:00,084 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 214 of 214 statements. [2025-01-10 02:33:00,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:33:00,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 128 proven. 137 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2025-01-10 02:33:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735972067] [2025-01-10 02:33:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735972067] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107146015] [2025-01-10 02:33:00,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:33:00,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:00,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:00,402 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:00,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 02:33:00,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 214 statements into 2 equivalence classes. [2025-01-10 02:33:00,483 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 214 of 214 statements. [2025-01-10 02:33:00,483 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:33:00,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:00,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:33:00,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 381 proven. 126 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2025-01-10 02:33:00,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 109 proven. 210 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2025-01-10 02:33:00,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107146015] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:00,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:00,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 20 [2025-01-10 02:33:00,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700430914] [2025-01-10 02:33:00,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:00,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-10 02:33:00,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:00,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-10 02:33:00,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:33:00,979 INFO L87 Difference]: Start difference. First operand 1126 states and 1905 transitions. Second operand has 20 states, 19 states have (on average 6.684210526315789) internal successors, (127), 17 states have internal predecessors, (127), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2025-01-10 02:33:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:01,345 INFO L93 Difference]: Finished difference Result 2193 states and 3842 transitions. [2025-01-10 02:33:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 02:33:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.684210526315789) internal successors, (127), 17 states have internal predecessors, (127), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) Word has length 214 [2025-01-10 02:33:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:01,353 INFO L225 Difference]: With dead ends: 2193 [2025-01-10 02:33:01,353 INFO L226 Difference]: Without dead ends: 1160 [2025-01-10 02:33:01,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 415 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2025-01-10 02:33:01,358 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 138 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:01,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 592 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:33:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2025-01-10 02:33:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1056. [2025-01-10 02:33:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 833 states have (on average 1.0468187274909964) internal successors, (872), 824 states have internal predecessors, (872), 104 states have call successors, (104), 21 states have call predecessors, (104), 115 states have return successors, (803), 210 states have call predecessors, (803), 103 states have call successors, (803) [2025-01-10 02:33:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1779 transitions. [2025-01-10 02:33:01,444 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1779 transitions. Word has length 214 [2025-01-10 02:33:01,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:01,445 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1779 transitions. [2025-01-10 02:33:01,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.684210526315789) internal successors, (127), 17 states have internal predecessors, (127), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2025-01-10 02:33:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1779 transitions. [2025-01-10 02:33:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-01-10 02:33:01,447 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:01,447 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 10, 10, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1] [2025-01-10 02:33:01,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 02:33:01,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:01,648 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:01,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:01,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2069007226, now seen corresponding path program 3 times [2025-01-10 02:33:01,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:01,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570099379] [2025-01-10 02:33:01,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:33:01,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:01,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 234 statements into 8 equivalence classes. [2025-01-10 02:33:01,662 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 84 of 234 statements. [2025-01-10 02:33:01,663 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 02:33:01,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 249 proven. 20 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2025-01-10 02:33:01,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:01,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570099379] [2025-01-10 02:33:01,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570099379] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:01,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649331440] [2025-01-10 02:33:01,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:33:01,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:01,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:01,765 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:01,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 02:33:01,826 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 234 statements into 8 equivalence classes. [2025-01-10 02:33:01,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 84 of 234 statements. [2025-01-10 02:33:01,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 02:33:01,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:01,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 02:33:01,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 279 proven. 28 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2025-01-10 02:33:01,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:02,306 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 279 proven. 28 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2025-01-10 02:33:02,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649331440] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:02,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:02,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-01-10 02:33:02,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251862810] [2025-01-10 02:33:02,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:02,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 02:33:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:02,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 02:33:02,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2025-01-10 02:33:02,308 INFO L87 Difference]: Start difference. First operand 1056 states and 1779 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-01-10 02:33:02,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:02,519 INFO L93 Difference]: Finished difference Result 1429 states and 2410 transitions. [2025-01-10 02:33:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 02:33:02,519 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 234 [2025-01-10 02:33:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:02,523 INFO L225 Difference]: With dead ends: 1429 [2025-01-10 02:33:02,523 INFO L226 Difference]: Without dead ends: 444 [2025-01-10 02:33:02,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 457 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2025-01-10 02:33:02,528 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 142 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:02,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 159 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:33:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-01-10 02:33:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 404. [2025-01-10 02:33:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 319 states have (on average 1.0407523510971788) internal successors, (332), 321 states have internal predecessors, (332), 48 states have call successors, (48), 24 states have call predecessors, (48), 35 states have return successors, (74), 58 states have call predecessors, (74), 47 states have call successors, (74) [2025-01-10 02:33:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 454 transitions. [2025-01-10 02:33:02,547 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 454 transitions. Word has length 234 [2025-01-10 02:33:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:02,549 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 454 transitions. [2025-01-10 02:33:02,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-01-10 02:33:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 454 transitions. [2025-01-10 02:33:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2025-01-10 02:33:02,551 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:02,551 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 12, 12, 11, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 1, 1, 1, 1] [2025-01-10 02:33:02,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-10 02:33:02,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-01-10 02:33:02,753 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:02,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash 802081736, now seen corresponding path program 4 times [2025-01-10 02:33:02,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605782680] [2025-01-10 02:33:02,753 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:33:02,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:02,760 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 272 statements into 2 equivalence classes. [2025-01-10 02:33:02,767 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 163 of 272 statements. [2025-01-10 02:33:02,768 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 02:33:02,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 323 proven. 231 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2025-01-10 02:33:02,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605782680] [2025-01-10 02:33:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605782680] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731987052] [2025-01-10 02:33:02,943 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:33:02,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:02,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:02,948 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:02,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-10 02:33:03,014 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 272 statements into 2 equivalence classes. [2025-01-10 02:33:03,059 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 163 of 272 statements. [2025-01-10 02:33:03,060 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 02:33:03,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:03,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 02:33:03,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 351 proven. 237 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2025-01-10 02:33:03,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 351 proven. 249 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2025-01-10 02:33:03,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731987052] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:03,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:03,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 19] total 24 [2025-01-10 02:33:03,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146723666] [2025-01-10 02:33:03,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:03,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 02:33:03,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:03,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 02:33:03,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2025-01-10 02:33:03,960 INFO L87 Difference]: Start difference. First operand 404 states and 454 transitions. Second operand has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 21 states have internal predecessors, (122), 16 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2025-01-10 02:33:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:04,271 INFO L93 Difference]: Finished difference Result 810 states and 929 transitions. [2025-01-10 02:33:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 02:33:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 21 states have internal predecessors, (122), 16 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) Word has length 272 [2025-01-10 02:33:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:04,274 INFO L225 Difference]: With dead ends: 810 [2025-01-10 02:33:04,275 INFO L226 Difference]: Without dead ends: 491 [2025-01-10 02:33:04,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 530 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2025-01-10 02:33:04,276 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 137 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:04,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 296 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:33:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-01-10 02:33:04,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 408. [2025-01-10 02:33:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 322 states have (on average 1.0403726708074534) internal successors, (335), 324 states have internal predecessors, (335), 49 states have call successors, (49), 24 states have call predecessors, (49), 35 states have return successors, (76), 59 states have call predecessors, (76), 48 states have call successors, (76) [2025-01-10 02:33:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 460 transitions. [2025-01-10 02:33:04,298 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 460 transitions. Word has length 272 [2025-01-10 02:33:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:04,298 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 460 transitions. [2025-01-10 02:33:04,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 21 states have internal predecessors, (122), 16 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2025-01-10 02:33:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 460 transitions. [2025-01-10 02:33:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2025-01-10 02:33:04,301 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:04,301 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2025-01-10 02:33:04,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-10 02:33:04,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-01-10 02:33:04,505 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:04,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1942864476, now seen corresponding path program 5 times [2025-01-10 02:33:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:04,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774143575] [2025-01-10 02:33:04,506 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:33:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:04,512 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 253 statements into 9 equivalence classes. [2025-01-10 02:33:04,532 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 253 of 253 statements. [2025-01-10 02:33:04,532 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-10 02:33:04,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 164 proven. 250 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2025-01-10 02:33:05,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774143575] [2025-01-10 02:33:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774143575] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:05,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824338040] [2025-01-10 02:33:05,612 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:33:05,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:05,613 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:05,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-10 02:33:05,672 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 253 statements into 9 equivalence classes. [2025-01-10 02:33:05,711 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 253 of 253 statements. [2025-01-10 02:33:05,711 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-10 02:33:05,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:05,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-01-10 02:33:05,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2025-01-10 02:33:06,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2025-01-10 02:33:08,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824338040] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:08,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:08,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 29] total 57 [2025-01-10 02:33:08,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9388699] [2025-01-10 02:33:08,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:08,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-01-10 02:33:08,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:08,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-01-10 02:33:08,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=2892, Unknown=0, NotChecked=0, Total=3306 [2025-01-10 02:33:08,634 INFO L87 Difference]: Start difference. First operand 408 states and 460 transitions. Second operand has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2025-01-10 02:33:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:08,924 INFO L93 Difference]: Finished difference Result 467 states and 528 transitions. [2025-01-10 02:33:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-10 02:33:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) Word has length 253 [2025-01-10 02:33:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:08,928 INFO L225 Difference]: With dead ends: 467 [2025-01-10 02:33:08,928 INFO L226 Difference]: Without dead ends: 455 [2025-01-10 02:33:08,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 467 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3270 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=499, Invalid=3407, Unknown=0, NotChecked=0, Total=3906 [2025-01-10 02:33:08,933 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:08,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 758 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:33:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2025-01-10 02:33:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 390. [2025-01-10 02:33:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 308 states have (on average 1.0324675324675325) internal successors, (318), 310 states have internal predecessors, (318), 47 states have call successors, (47), 24 states have call predecessors, (47), 33 states have return successors, (72), 55 states have call predecessors, (72), 46 states have call successors, (72) [2025-01-10 02:33:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 437 transitions. [2025-01-10 02:33:08,950 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 437 transitions. Word has length 253 [2025-01-10 02:33:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:08,950 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 437 transitions. [2025-01-10 02:33:08,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2025-01-10 02:33:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 437 transitions. [2025-01-10 02:33:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2025-01-10 02:33:08,952 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:08,952 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 3, 1, 1, 1, 1] [2025-01-10 02:33:08,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-10 02:33:09,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:09,157 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:09,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1038740554, now seen corresponding path program 3 times [2025-01-10 02:33:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123120575] [2025-01-10 02:33:09,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:33:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:09,174 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 384 statements into 19 equivalence classes. [2025-01-10 02:33:09,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 89 of 384 statements. [2025-01-10 02:33:09,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-10 02:33:09,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 580 proven. 56 refuted. 0 times theorem prover too weak. 1889 trivial. 0 not checked. [2025-01-10 02:33:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123120575] [2025-01-10 02:33:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123120575] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143519238] [2025-01-10 02:33:09,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:33:09,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:09,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:09,332 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:09,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-10 02:33:09,486 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 384 statements into 19 equivalence classes. [2025-01-10 02:33:09,518 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 89 of 384 statements. [2025-01-10 02:33:09,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-10 02:33:09,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:09,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:33:09,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 958 proven. 14 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2025-01-10 02:33:09,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 578 proven. 58 refuted. 0 times theorem prover too weak. 1889 trivial. 0 not checked. [2025-01-10 02:33:10,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143519238] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:10,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:10,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2025-01-10 02:33:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420455081] [2025-01-10 02:33:10,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:10,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 02:33:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:10,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 02:33:10,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2025-01-10 02:33:10,984 INFO L87 Difference]: Start difference. First operand 390 states and 437 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 8 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 8 states have call successors, (20) [2025-01-10 02:33:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:11,148 INFO L93 Difference]: Finished difference Result 699 states and 800 transitions. [2025-01-10 02:33:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 02:33:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 8 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 8 states have call successors, (20) Word has length 384 [2025-01-10 02:33:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:11,151 INFO L225 Difference]: With dead ends: 699 [2025-01-10 02:33:11,151 INFO L226 Difference]: Without dead ends: 415 [2025-01-10 02:33:11,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 759 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:33:11,152 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 49 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:11,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 212 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:33:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2025-01-10 02:33:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 401. [2025-01-10 02:33:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 316 states have (on average 1.0316455696202531) internal successors, (326), 319 states have internal predecessors, (326), 48 states have call successors, (48), 24 states have call predecessors, (48), 35 states have return successors, (79), 57 states have call predecessors, (79), 47 states have call successors, (79) [2025-01-10 02:33:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 453 transitions. [2025-01-10 02:33:11,194 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 453 transitions. Word has length 384 [2025-01-10 02:33:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:11,194 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 453 transitions. [2025-01-10 02:33:11,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 8 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 8 states have call successors, (20) [2025-01-10 02:33:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 453 transitions. [2025-01-10 02:33:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2025-01-10 02:33:11,197 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:11,197 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 17, 16, 16, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 5, 2, 1, 1, 1, 1] [2025-01-10 02:33:11,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-10 02:33:11,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-01-10 02:33:11,402 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:11,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1965406224, now seen corresponding path program 4 times [2025-01-10 02:33:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:11,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933182314] [2025-01-10 02:33:11,403 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:33:11,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:11,411 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 365 statements into 2 equivalence classes. [2025-01-10 02:33:11,419 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 218 of 365 statements. [2025-01-10 02:33:11,419 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 02:33:11,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 354 proven. 205 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2025-01-10 02:33:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933182314] [2025-01-10 02:33:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933182314] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45539762] [2025-01-10 02:33:11,531 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:33:11,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:11,538 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:11,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-10 02:33:11,625 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 365 statements into 2 equivalence classes. [2025-01-10 02:33:11,656 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 218 of 365 statements. [2025-01-10 02:33:11,656 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 02:33:11,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:11,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:33:11,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 354 proven. 205 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2025-01-10 02:33:11,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 354 proven. 207 refuted. 0 times theorem prover too weak. 1730 trivial. 0 not checked. [2025-01-10 02:33:12,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45539762] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:12,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:12,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 15 [2025-01-10 02:33:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268351008] [2025-01-10 02:33:12,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:12,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 02:33:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:12,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 02:33:12,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:33:12,265 INFO L87 Difference]: Start difference. First operand 401 states and 453 transitions. Second operand has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2025-01-10 02:33:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:12,467 INFO L93 Difference]: Finished difference Result 702 states and 796 transitions. [2025-01-10 02:33:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 02:33:12,468 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 365 [2025-01-10 02:33:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:12,471 INFO L225 Difference]: With dead ends: 702 [2025-01-10 02:33:12,471 INFO L226 Difference]: Without dead ends: 415 [2025-01-10 02:33:12,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 722 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:33:12,472 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 69 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:12,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 323 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:33:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2025-01-10 02:33:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 397. [2025-01-10 02:33:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 313 states have (on average 1.0319488817891374) internal successors, (323), 316 states have internal predecessors, (323), 47 states have call successors, (47), 24 states have call predecessors, (47), 35 states have return successors, (75), 56 states have call predecessors, (75), 46 states have call successors, (75) [2025-01-10 02:33:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 445 transitions. [2025-01-10 02:33:12,510 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 445 transitions. Word has length 365 [2025-01-10 02:33:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:12,514 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 445 transitions. [2025-01-10 02:33:12,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2025-01-10 02:33:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 445 transitions. [2025-01-10 02:33:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2025-01-10 02:33:12,516 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:12,516 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 3, 1, 1, 1, 1] [2025-01-10 02:33:12,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-10 02:33:12,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-01-10 02:33:12,717 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:12,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1640309168, now seen corresponding path program 5 times [2025-01-10 02:33:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:12,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114323325] [2025-01-10 02:33:12,718 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:33:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:12,730 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 384 statements into 14 equivalence classes. [2025-01-10 02:33:12,756 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 374 of 384 statements. [2025-01-10 02:33:12,756 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-10 02:33:12,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 468 proven. 488 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2025-01-10 02:33:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114323325] [2025-01-10 02:33:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114323325] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103396780] [2025-01-10 02:33:13,133 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:33:13,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:13,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:13,139 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:13,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-10 02:33:13,227 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 384 statements into 14 equivalence classes. [2025-01-10 02:33:13,287 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 374 of 384 statements. [2025-01-10 02:33:13,287 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-10 02:33:13,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:13,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 02:33:13,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 446 proven. 555 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2025-01-10 02:33:13,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 450 proven. 565 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2025-01-10 02:33:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103396780] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:14,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:14,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 19] total 29 [2025-01-10 02:33:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828550723] [2025-01-10 02:33:14,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:14,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-10 02:33:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:14,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-10 02:33:14,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2025-01-10 02:33:14,469 INFO L87 Difference]: Start difference. First operand 397 states and 445 transitions. Second operand has 29 states, 29 states have (on average 5.758620689655173) internal successors, (167), 29 states have internal predecessors, (167), 19 states have call successors, (29), 1 states have call predecessors, (29), 10 states have return successors, (32), 17 states have call predecessors, (32), 19 states have call successors, (32) [2025-01-10 02:33:15,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:15,037 INFO L93 Difference]: Finished difference Result 742 states and 846 transitions. [2025-01-10 02:33:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-10 02:33:15,037 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.758620689655173) internal successors, (167), 29 states have internal predecessors, (167), 19 states have call successors, (29), 1 states have call predecessors, (29), 10 states have return successors, (32), 17 states have call predecessors, (32), 19 states have call successors, (32) Word has length 384 [2025-01-10 02:33:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:15,040 INFO L225 Difference]: With dead ends: 742 [2025-01-10 02:33:15,040 INFO L226 Difference]: Without dead ends: 460 [2025-01-10 02:33:15,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 751 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=1652, Unknown=0, NotChecked=0, Total=1980 [2025-01-10 02:33:15,042 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 120 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:15,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 635 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:33:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2025-01-10 02:33:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 435. [2025-01-10 02:33:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 346 states have (on average 1.0289017341040463) internal successors, (356), 343 states have internal predecessors, (356), 52 states have call successors, (52), 32 states have call predecessors, (52), 35 states have return successors, (75), 59 states have call predecessors, (75), 51 states have call successors, (75) [2025-01-10 02:33:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 483 transitions. [2025-01-10 02:33:15,082 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 483 transitions. Word has length 384 [2025-01-10 02:33:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:15,083 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 483 transitions. [2025-01-10 02:33:15,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.758620689655173) internal successors, (167), 29 states have internal predecessors, (167), 19 states have call successors, (29), 1 states have call predecessors, (29), 10 states have return successors, (32), 17 states have call predecessors, (32), 19 states have call successors, (32) [2025-01-10 02:33:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 483 transitions. [2025-01-10 02:33:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2025-01-10 02:33:15,088 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:15,089 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 5, 5, 4, 1, 1, 1, 1] [2025-01-10 02:33:15,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-01-10 02:33:15,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-01-10 02:33:15,289 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:15,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1595444318, now seen corresponding path program 6 times [2025-01-10 02:33:15,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:15,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472403134] [2025-01-10 02:33:15,290 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 02:33:15,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:15,303 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 403 statements into 14 equivalence classes. [2025-01-10 02:33:15,312 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 131 of 403 statements. [2025-01-10 02:33:15,312 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-10 02:33:15,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 399 proven. 2 refuted. 0 times theorem prover too weak. 2385 trivial. 0 not checked. [2025-01-10 02:33:15,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472403134] [2025-01-10 02:33:15,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472403134] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392566027] [2025-01-10 02:33:15,506 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 02:33:15,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:15,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:15,514 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:15,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-10 02:33:15,608 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 403 statements into 14 equivalence classes. [2025-01-10 02:33:15,630 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 131 of 403 statements. [2025-01-10 02:33:15,631 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-10 02:33:15,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:15,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 02:33:15,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 467 proven. 6 refuted. 0 times theorem prover too weak. 2313 trivial. 0 not checked. [2025-01-10 02:33:15,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 467 proven. 6 refuted. 0 times theorem prover too weak. 2313 trivial. 0 not checked. [2025-01-10 02:33:16,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392566027] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:16,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:16,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-10 02:33:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347124183] [2025-01-10 02:33:16,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:16,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:33:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:16,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:33:16,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:33:16,356 INFO L87 Difference]: Start difference. First operand 435 states and 483 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-10 02:33:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:16,449 INFO L93 Difference]: Finished difference Result 772 states and 868 transitions. [2025-01-10 02:33:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 02:33:16,453 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 403 [2025-01-10 02:33:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:16,455 INFO L225 Difference]: With dead ends: 772 [2025-01-10 02:33:16,455 INFO L226 Difference]: Without dead ends: 387 [2025-01-10 02:33:16,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 797 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:33:16,456 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 86 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:16,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:33:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2025-01-10 02:33:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 371. [2025-01-10 02:33:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 295 states have (on average 1.0271186440677966) internal successors, (303), 293 states have internal predecessors, (303), 45 states have call successors, (45), 31 states have call predecessors, (45), 29 states have return successors, (56), 46 states have call predecessors, (56), 44 states have call successors, (56) [2025-01-10 02:33:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 404 transitions. [2025-01-10 02:33:16,487 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 404 transitions. Word has length 403 [2025-01-10 02:33:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:16,488 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 404 transitions. [2025-01-10 02:33:16,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-10 02:33:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 404 transitions. [2025-01-10 02:33:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2025-01-10 02:33:16,489 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:16,489 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2025-01-10 02:33:16,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-01-10 02:33:16,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-01-10 02:33:16,690 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:16,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:16,690 INFO L85 PathProgramCache]: Analyzing trace with hash 322047479, now seen corresponding path program 7 times [2025-01-10 02:33:16,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:16,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924927108] [2025-01-10 02:33:16,690 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 02:33:16,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:16,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-01-10 02:33:16,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-01-10 02:33:16,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:33:16,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 440 proven. 701 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2025-01-10 02:33:18,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924927108] [2025-01-10 02:33:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924927108] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748675720] [2025-01-10 02:33:18,620 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 02:33:18,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:18,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:18,628 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:18,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-10 02:33:18,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-01-10 02:33:18,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-01-10 02:33:18,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:33:18,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:18,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-01-10 02:33:18,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2025-01-10 02:33:19,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 585 proven. 468 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked. [2025-01-10 02:33:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748675720] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:24,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 37] total 68 [2025-01-10 02:33:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704404748] [2025-01-10 02:33:24,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:24,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-01-10 02:33:24,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:24,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-01-10 02:33:24,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=4133, Unknown=0, NotChecked=0, Total=4692 [2025-01-10 02:33:24,881 INFO L87 Difference]: Start difference. First operand 371 states and 404 transitions. Second operand has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) [2025-01-10 02:33:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:25,111 INFO L93 Difference]: Finished difference Result 425 states and 463 transitions. [2025-01-10 02:33:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-10 02:33:25,112 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) Word has length 404 [2025-01-10 02:33:25,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:25,114 INFO L225 Difference]: With dead ends: 425 [2025-01-10 02:33:25,115 INFO L226 Difference]: Without dead ends: 415 [2025-01-10 02:33:25,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 769 SyntacticMatches, 51 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5570 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=658, Invalid=4744, Unknown=0, NotChecked=0, Total=5402 [2025-01-10 02:33:25,117 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 16 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:25,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 519 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:33:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2025-01-10 02:33:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 393. [2025-01-10 02:33:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 313 states have (on average 1.0223642172523961) internal successors, (320), 310 states have internal predecessors, (320), 47 states have call successors, (47), 31 states have call predecessors, (47), 32 states have return successors, (62), 51 states have call predecessors, (62), 46 states have call successors, (62) [2025-01-10 02:33:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 429 transitions. [2025-01-10 02:33:25,134 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 429 transitions. Word has length 404 [2025-01-10 02:33:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:25,134 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 429 transitions. [2025-01-10 02:33:25,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) [2025-01-10 02:33:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 429 transitions. [2025-01-10 02:33:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2025-01-10 02:33:25,137 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:25,137 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 28, 24, 23, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 7, 5, 1, 1, 1, 1] [2025-01-10 02:33:25,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-01-10 02:33:25,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-01-10 02:33:25,342 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:25,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 954381002, now seen corresponding path program 6 times [2025-01-10 02:33:25,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:25,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021426891] [2025-01-10 02:33:25,343 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 02:33:25,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:25,362 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 574 statements into 21 equivalence classes. [2025-01-10 02:33:25,387 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 362 of 574 statements. [2025-01-10 02:33:25,387 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-10 02:33:25,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5797 backedges. 1245 proven. 182 refuted. 0 times theorem prover too weak. 4370 trivial. 0 not checked. [2025-01-10 02:33:25,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021426891] [2025-01-10 02:33:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021426891] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852851245] [2025-01-10 02:33:25,656 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 02:33:25,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:25,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:25,658 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:25,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-10 02:33:25,814 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 574 statements into 21 equivalence classes. [2025-01-10 02:33:25,871 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 362 of 574 statements. [2025-01-10 02:33:25,871 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-10 02:33:25,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:25,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:33:25,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5797 backedges. 2091 proven. 77 refuted. 0 times theorem prover too weak. 3629 trivial. 0 not checked. [2025-01-10 02:33:25,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5797 backedges. 1238 proven. 191 refuted. 0 times theorem prover too weak. 4368 trivial. 0 not checked. [2025-01-10 02:33:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852851245] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:26,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:26,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 21 [2025-01-10 02:33:26,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495892837] [2025-01-10 02:33:26,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:26,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 02:33:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:26,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 02:33:26,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:33:26,993 INFO L87 Difference]: Start difference. First operand 393 states and 429 transitions. Second operand has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 17 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 8 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-10 02:33:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:27,291 INFO L93 Difference]: Finished difference Result 553 states and 603 transitions. [2025-01-10 02:33:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 02:33:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 17 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 8 states have call predecessors, (27), 17 states have call successors, (27) Word has length 574 [2025-01-10 02:33:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:27,294 INFO L225 Difference]: With dead ends: 553 [2025-01-10 02:33:27,294 INFO L226 Difference]: Without dead ends: 423 [2025-01-10 02:33:27,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1137 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2025-01-10 02:33:27,296 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 107 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:27,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 201 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:33:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-01-10 02:33:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 405. [2025-01-10 02:33:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 323 states have (on average 1.021671826625387) internal successors, (330), 319 states have internal predecessors, (330), 48 states have call successors, (48), 32 states have call predecessors, (48), 33 states have return successors, (64), 53 states have call predecessors, (64), 47 states have call successors, (64) [2025-01-10 02:33:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 442 transitions. [2025-01-10 02:33:27,315 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 442 transitions. Word has length 574 [2025-01-10 02:33:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:27,315 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 442 transitions. [2025-01-10 02:33:27,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 17 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 8 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-10 02:33:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 442 transitions. [2025-01-10 02:33:27,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2025-01-10 02:33:27,318 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:27,318 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 28, 28, 24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 10, 9, 7, 4, 1, 1, 1, 1] [2025-01-10 02:33:27,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-01-10 02:33:27,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-01-10 02:33:27,519 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:27,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash -389361831, now seen corresponding path program 7 times [2025-01-10 02:33:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054322521] [2025-01-10 02:33:27,520 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 02:33:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:27,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 575 statements into 1 equivalence classes. [2025-01-10 02:33:27,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 575 of 575 statements. [2025-01-10 02:33:27,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:33:27,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5824 backedges. 757 proven. 257 refuted. 0 times theorem prover too weak. 4810 trivial. 0 not checked. [2025-01-10 02:33:27,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054322521] [2025-01-10 02:33:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054322521] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841541044] [2025-01-10 02:33:27,770 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 02:33:27,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:27,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:27,774 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:27,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-10 02:33:27,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 575 statements into 1 equivalence classes. [2025-01-10 02:33:28,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 575 of 575 statements. [2025-01-10 02:33:28,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:33:28,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:28,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:33:28,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5824 backedges. 757 proven. 257 refuted. 0 times theorem prover too weak. 4810 trivial. 0 not checked. [2025-01-10 02:33:28,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5824 backedges. 757 proven. 264 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2025-01-10 02:33:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841541044] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:28,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 15 [2025-01-10 02:33:28,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800582451] [2025-01-10 02:33:28,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:28,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 02:33:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:28,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 02:33:28,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:33:28,796 INFO L87 Difference]: Start difference. First operand 405 states and 442 transitions. Second operand has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-01-10 02:33:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:28,927 INFO L93 Difference]: Finished difference Result 445 states and 488 transitions. [2025-01-10 02:33:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:33:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 575 [2025-01-10 02:33:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:28,930 INFO L225 Difference]: With dead ends: 445 [2025-01-10 02:33:28,930 INFO L226 Difference]: Without dead ends: 370 [2025-01-10 02:33:28,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1142 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:33:28,930 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 59 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:28,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 227 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:33:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-01-10 02:33:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2025-01-10 02:33:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 293 states have (on average 1.0204778156996588) internal successors, (299), 289 states have internal predecessors, (299), 44 states have call successors, (44), 30 states have call predecessors, (44), 29 states have return successors, (54), 47 states have call predecessors, (54), 43 states have call successors, (54) [2025-01-10 02:33:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 397 transitions. [2025-01-10 02:33:28,960 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 397 transitions. Word has length 575 [2025-01-10 02:33:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:28,961 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 397 transitions. [2025-01-10 02:33:28,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-01-10 02:33:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 397 transitions. [2025-01-10 02:33:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2025-01-10 02:33:28,963 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:28,964 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1] [2025-01-10 02:33:28,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-01-10 02:33:29,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-01-10 02:33:29,164 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:29,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2854360, now seen corresponding path program 8 times [2025-01-10 02:33:29,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:29,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962858571] [2025-01-10 02:33:29,165 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:33:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:29,175 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 614 statements into 2 equivalence classes. [2025-01-10 02:33:29,192 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 614 of 614 statements. [2025-01-10 02:33:29,192 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:33:29,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 668 proven. 186 refuted. 0 times theorem prover too weak. 5805 trivial. 0 not checked. [2025-01-10 02:33:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962858571] [2025-01-10 02:33:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962858571] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194796295] [2025-01-10 02:33:29,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:33:29,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:29,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:29,387 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:29,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-10 02:33:29,566 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 614 statements into 2 equivalence classes. [2025-01-10 02:33:29,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 614 of 614 statements. [2025-01-10 02:33:29,645 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:33:29,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:29,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:33:29,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 892 proven. 193 refuted. 0 times theorem prover too weak. 5574 trivial. 0 not checked. [2025-01-10 02:33:29,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 896 proven. 196 refuted. 0 times theorem prover too weak. 5567 trivial. 0 not checked. [2025-01-10 02:33:30,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194796295] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:30,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:30,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 13] total 16 [2025-01-10 02:33:30,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419690674] [2025-01-10 02:33:30,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:30,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:33:30,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:30,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:33:30,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:33:30,805 INFO L87 Difference]: Start difference. First operand 367 states and 397 transitions. Second operand has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-01-10 02:33:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:30,985 INFO L93 Difference]: Finished difference Result 376 states and 405 transitions. [2025-01-10 02:33:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:33:30,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 614 [2025-01-10 02:33:30,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:30,988 INFO L225 Difference]: With dead ends: 376 [2025-01-10 02:33:30,988 INFO L226 Difference]: Without dead ends: 353 [2025-01-10 02:33:30,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1217 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:33:30,989 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:30,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 261 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:33:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2025-01-10 02:33:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 340. [2025-01-10 02:33:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 272 states have (on average 1.0183823529411764) internal successors, (277), 268 states have internal predecessors, (277), 41 states have call successors, (41), 29 states have call predecessors, (41), 26 states have return successors, (46), 42 states have call predecessors, (46), 40 states have call successors, (46) [2025-01-10 02:33:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 364 transitions. [2025-01-10 02:33:31,002 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 364 transitions. Word has length 614 [2025-01-10 02:33:31,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:31,003 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 364 transitions. [2025-01-10 02:33:31,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-01-10 02:33:31,003 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 364 transitions. [2025-01-10 02:33:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2025-01-10 02:33:31,006 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:31,006 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 25, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 10, 9, 9, 6, 1, 1, 1, 1] [2025-01-10 02:33:31,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-01-10 02:33:31,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:31,206 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:31,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:31,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2079812609, now seen corresponding path program 9 times [2025-01-10 02:33:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:31,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345402396] [2025-01-10 02:33:31,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:33:31,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:31,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 651 statements into 26 equivalence classes. [2025-01-10 02:33:31,235 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 271 of 651 statements. [2025-01-10 02:33:31,236 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-01-10 02:33:31,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 833 proven. 208 refuted. 0 times theorem prover too weak. 6462 trivial. 0 not checked. [2025-01-10 02:33:31,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345402396] [2025-01-10 02:33:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345402396] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365725279] [2025-01-10 02:33:31,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:33:31,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:31,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:31,344 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:31,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-10 02:33:31,523 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 651 statements into 26 equivalence classes. [2025-01-10 02:33:31,566 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 271 of 651 statements. [2025-01-10 02:33:31,566 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-01-10 02:33:31,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:31,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 02:33:31,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 3380 proven. 26 refuted. 0 times theorem prover too weak. 4097 trivial. 0 not checked. [2025-01-10 02:33:31,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 1019 proven. 258 refuted. 0 times theorem prover too weak. 6226 trivial. 0 not checked. [2025-01-10 02:33:32,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365725279] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:32,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:32,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 20 [2025-01-10 02:33:32,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136951721] [2025-01-10 02:33:32,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:32,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-10 02:33:32,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:32,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-10 02:33:32,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:33:32,614 INFO L87 Difference]: Start difference. First operand 340 states and 364 transitions. Second operand has 20 states, 20 states have (on average 6.3) internal successors, (126), 20 states have internal predecessors, (126), 10 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2025-01-10 02:33:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:32,814 INFO L93 Difference]: Finished difference Result 554 states and 594 transitions. [2025-01-10 02:33:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:33:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.3) internal successors, (126), 20 states have internal predecessors, (126), 10 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 651 [2025-01-10 02:33:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:32,816 INFO L225 Difference]: With dead ends: 554 [2025-01-10 02:33:32,816 INFO L226 Difference]: Without dead ends: 332 [2025-01-10 02:33:32,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1319 GetRequests, 1287 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2025-01-10 02:33:32,817 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 91 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:32,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 190 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:33:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-01-10 02:33:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 324. [2025-01-10 02:33:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.0154440154440154) internal successors, (263), 256 states have internal predecessors, (263), 40 states have call successors, (40), 28 states have call predecessors, (40), 24 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2025-01-10 02:33:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 344 transitions. [2025-01-10 02:33:32,831 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 344 transitions. Word has length 651 [2025-01-10 02:33:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:32,831 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 344 transitions. [2025-01-10 02:33:32,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.3) internal successors, (126), 20 states have internal predecessors, (126), 10 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2025-01-10 02:33:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 344 transitions. [2025-01-10 02:33:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2025-01-10 02:33:32,834 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:32,834 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 26, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 10, 10, 7, 6, 1, 1, 1, 1] [2025-01-10 02:33:32,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-01-10 02:33:33,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-01-10 02:33:33,038 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:33,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1462138796, now seen corresponding path program 10 times [2025-01-10 02:33:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:33,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523898910] [2025-01-10 02:33:33,038 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:33:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:33,049 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 633 statements into 2 equivalence classes. [2025-01-10 02:33:33,061 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 376 of 633 statements. [2025-01-10 02:33:33,061 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 02:33:33,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 813 proven. 311 refuted. 0 times theorem prover too weak. 5958 trivial. 0 not checked. [2025-01-10 02:33:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:33,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523898910] [2025-01-10 02:33:33,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523898910] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:33,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562188950] [2025-01-10 02:33:33,215 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:33:33,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:33,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:33,217 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:33,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-01-10 02:33:33,391 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 633 statements into 2 equivalence classes. [2025-01-10 02:33:33,443 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 376 of 633 statements. [2025-01-10 02:33:33,444 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 02:33:33,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:33,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 02:33:33,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 1516 proven. 163 refuted. 0 times theorem prover too weak. 5403 trivial. 0 not checked. [2025-01-10 02:33:33,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 1516 proven. 171 refuted. 0 times theorem prover too weak. 5395 trivial. 0 not checked. [2025-01-10 02:33:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562188950] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:34,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 17] total 25 [2025-01-10 02:33:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601552652] [2025-01-10 02:33:34,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:34,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-10 02:33:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:34,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-10 02:33:34,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2025-01-10 02:33:34,800 INFO L87 Difference]: Start difference. First operand 324 states and 344 transitions. Second operand has 25 states, 24 states have (on average 6.208333333333333) internal successors, (149), 24 states have internal predecessors, (149), 18 states have call successors, (25), 2 states have call predecessors, (25), 10 states have return successors, (27), 12 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-10 02:33:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:35,315 INFO L93 Difference]: Finished difference Result 399 states and 428 transitions. [2025-01-10 02:33:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-10 02:33:35,316 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.208333333333333) internal successors, (149), 24 states have internal predecessors, (149), 18 states have call successors, (25), 2 states have call predecessors, (25), 10 states have return successors, (27), 12 states have call predecessors, (27), 17 states have call successors, (27) Word has length 633 [2025-01-10 02:33:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:35,318 INFO L225 Difference]: With dead ends: 399 [2025-01-10 02:33:35,318 INFO L226 Difference]: Without dead ends: 347 [2025-01-10 02:33:35,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1295 GetRequests, 1247 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=1450, Unknown=0, NotChecked=0, Total=1722 [2025-01-10 02:33:35,319 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 168 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:35,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 441 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:33:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-01-10 02:33:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 315. [2025-01-10 02:33:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 252 states have (on average 1.0158730158730158) internal successors, (256), 249 states have internal predecessors, (256), 39 states have call successors, (39), 28 states have call predecessors, (39), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2025-01-10 02:33:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 333 transitions. [2025-01-10 02:33:35,341 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 333 transitions. Word has length 633 [2025-01-10 02:33:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:35,341 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 333 transitions. [2025-01-10 02:33:35,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.208333333333333) internal successors, (149), 24 states have internal predecessors, (149), 18 states have call successors, (25), 2 states have call predecessors, (25), 10 states have return successors, (27), 12 states have call predecessors, (27), 17 states have call successors, (27) [2025-01-10 02:33:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 333 transitions. [2025-01-10 02:33:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2025-01-10 02:33:35,347 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:33:35,347 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1] [2025-01-10 02:33:35,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-01-10 02:33:35,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:35,548 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-01-10 02:33:35,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:33:35,549 INFO L85 PathProgramCache]: Analyzing trace with hash -330128645, now seen corresponding path program 11 times [2025-01-10 02:33:35,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:33:35,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867250017] [2025-01-10 02:33:35,549 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:33:35,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:33:35,568 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 653 statements into 26 equivalence classes. [2025-01-10 02:33:35,595 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) and asserted 653 of 653 statements. [2025-01-10 02:33:35,595 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2025-01-10 02:33:35,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1314 proven. 1882 refuted. 0 times theorem prover too weak. 4358 trivial. 0 not checked. [2025-01-10 02:33:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:33:40,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867250017] [2025-01-10 02:33:40,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867250017] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:33:40,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261809280] [2025-01-10 02:33:40,549 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:33:40,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:40,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:33:40,550 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:33:40,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-01-10 02:33:40,749 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 653 statements into 26 equivalence classes. [2025-01-10 02:33:40,863 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) and asserted 653 of 653 statements. [2025-01-10 02:33:40,863 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2025-01-10 02:33:40,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:33:40,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 133 conjuncts are in the unsatisfiable core [2025-01-10 02:33:40,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:33:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2025-01-10 02:33:41,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:33:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1543 proven. 1316 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2025-01-10 02:33:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261809280] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:33:55,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:33:55,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 36, 46] total 80 [2025-01-10 02:33:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620394609] [2025-01-10 02:33:55,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:33:55,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2025-01-10 02:33:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:33:55,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2025-01-10 02:33:55,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=5713, Unknown=0, NotChecked=0, Total=6480 [2025-01-10 02:33:55,534 INFO L87 Difference]: Start difference. First operand 315 states and 333 transitions. Second operand has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (56), 55 states have call predecessors, (56), 20 states have call successors, (56) [2025-01-10 02:33:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:33:55,757 INFO L93 Difference]: Finished difference Result 315 states and 333 transitions. [2025-01-10 02:33:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-10 02:33:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (56), 55 states have call predecessors, (56), 20 states have call successors, (56) Word has length 653 [2025-01-10 02:33:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:33:55,759 INFO L225 Difference]: With dead ends: 315 [2025-01-10 02:33:55,759 INFO L226 Difference]: Without dead ends: 0 [2025-01-10 02:33:55,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1439 GetRequests, 1263 SyntacticMatches, 95 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9376 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=819, Invalid=5987, Unknown=0, NotChecked=0, Total=6806 [2025-01-10 02:33:55,760 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:33:55,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 902 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:33:55,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-10 02:33:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-10 02:33:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:33:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-10 02:33:55,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 653 [2025-01-10 02:33:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:33:55,764 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 02:33:55,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (56), 55 states have call predecessors, (56), 20 states have call successors, (56) [2025-01-10 02:33:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-10 02:33:55,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-10 02:33:55,767 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-01-10 02:33:55,767 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-01-10 02:33:55,767 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-01-10 02:33:55,768 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-01-10 02:33:55,768 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-01-10 02:33:55,768 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-01-10 02:33:55,768 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2025-01-10 02:33:55,768 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2025-01-10 02:33:55,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-01-10 02:33:55,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-01-10 02:33:55,772 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-01-10 02:33:55,772 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-01-10 02:33:55,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-01-10 02:33:55,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:33:55,974 INFO L422 BasicCegarLoop]: Path program histogram: [11, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:33:55,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.