./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci04-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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/Fibonacci04-overflow.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 a4783e070fd2491b45504d9f6f3060ee7c5288027d9d113e851641208eae29b1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 14:29:29,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 14:29:29,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 14:29:29,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 14:29:29,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 14:29:29,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 14:29:29,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 14:29:29,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 14:29:29,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 14:29:29,651 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 14:29:29,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 14:29:29,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 14:29:29,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 14:29:29,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 14:29:29,655 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 14:29:29,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:29:29,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 14:29:29,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 14:29:29,656 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 -> a4783e070fd2491b45504d9f6f3060ee7c5288027d9d113e851641208eae29b1 [2025-02-06 14:29:29,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 14:29:29,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 14:29:29,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 14:29:29,902 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 14:29:29,902 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 14:29:29,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci04-overflow.c [2025-02-06 14:29:31,085 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/45a9e1e3e/d6866d2e46fc4c479ce6c465813a12f8/FLAG1c547a46d [2025-02-06 14:29:31,318 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 14:29:31,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci04-overflow.c [2025-02-06 14:29:31,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/45a9e1e3e/d6866d2e46fc4c479ce6c465813a12f8/FLAG1c547a46d [2025-02-06 14:29:31,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/45a9e1e3e/d6866d2e46fc4c479ce6c465813a12f8 [2025-02-06 14:29:31,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 14:29:31,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 14:29:31,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 14:29:31,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 14:29:31,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 14:29:31,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69840589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31, skipping insertion in model container [2025-02-06 14:29:31,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 14:29:31,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:29:31,851 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 14:29:31,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:29:31,880 INFO L204 MainTranslator]: Completed translation [2025-02-06 14:29:31,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31 WrapperNode [2025-02-06 14:29:31,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 14:29:31,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 14:29:31,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 14:29:31,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 14:29:31,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,899 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2025-02-06 14:29:31,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 14:29:31,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 14:29:31,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 14:29:31,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 14:29:31,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,911 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]. [2025-02-06 14:29:31,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,914 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 14:29:31,916 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 14:29:31,916 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 14:29:31,916 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 14:29:31,917 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (1/1) ... [2025-02-06 14:29:31,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:29:31,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:31,951 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) [2025-02-06 14:29:31,957 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 [2025-02-06 14:29:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2025-02-06 14:29:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2025-02-06 14:29:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 14:29:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 14:29:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 14:29:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 14:29:32,060 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 14:29:32,062 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 14:29:32,131 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L24: havoc #t~ret4;havoc #t~ret5; [2025-02-06 14:29:32,165 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-02-06 14:29:32,166 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 14:29:32,175 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 14:29:32,176 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 14:29:32,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:29:32 BoogieIcfgContainer [2025-02-06 14:29:32,176 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 14:29:32,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 14:29:32,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 14:29:32,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 14:29:32,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:29:31" (1/3) ... [2025-02-06 14:29:32,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f6f30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:29:32, skipping insertion in model container [2025-02-06 14:29:32,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:29:31" (2/3) ... [2025-02-06 14:29:32,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f6f30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:29:32, skipping insertion in model container [2025-02-06 14:29:32,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:29:32" (3/3) ... [2025-02-06 14:29:32,184 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci04-overflow.c [2025-02-06 14:29:32,194 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 14:29:32,196 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci04-overflow.c that has 2 procedures, 31 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-02-06 14:29:32,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 14:29:32,250 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;@4a352d6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 14:29:32,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 14:29:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 14:29:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 14:29:32,259 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:32,259 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:29:32,260 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:32,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1001399972, now seen corresponding path program 1 times [2025-02-06 14:29:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:32,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552720561] [2025-02-06 14:29:32,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:32,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 14:29:32,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 14:29:32,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:32,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:29:32,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:32,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552720561] [2025-02-06 14:29:32,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552720561] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:29:32,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:29:32,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 14:29:32,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205486843] [2025-02-06 14:29:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:29:32,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 14:29:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:32,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 14:29:32,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 14:29:32,449 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 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) [2025-02-06 14:29:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:32,493 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2025-02-06 14:29:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 14:29:32,495 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 [2025-02-06 14:29:32,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:32,499 INFO L225 Difference]: With dead ends: 36 [2025-02-06 14:29:32,499 INFO L226 Difference]: Without dead ends: 24 [2025-02-06 14:29:32,501 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 [2025-02-06 14:29:32,503 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 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 [2025-02-06 14:29:32,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:29:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-06 14:29:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-02-06 14:29:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 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) [2025-02-06 14:29:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-06 14:29:32,526 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-02-06 14:29:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:32,526 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-06 14:29:32,526 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) [2025-02-06 14:29:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-06 14:29:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 14:29:32,527 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:32,527 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:29:32,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 14:29:32,528 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:32,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:32,528 INFO L85 PathProgramCache]: Analyzing trace with hash 978628045, now seen corresponding path program 1 times [2025-02-06 14:29:32,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:32,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323229289] [2025-02-06 14:29:32,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:32,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:32,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 14:29:32,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 14:29:32,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:32,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:29:32,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:32,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323229289] [2025-02-06 14:29:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323229289] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:29:32,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:29:32,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:29:32,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947762840] [2025-02-06 14:29:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:29:32,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:29:32,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:32,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:29:32,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:29:32,579 INFO L87 Difference]: Start difference. First operand 22 states and 25 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) [2025-02-06 14:29:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:32,635 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-02-06 14:29:32,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:29:32,636 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 [2025-02-06 14:29:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:32,637 INFO L225 Difference]: With dead ends: 24 [2025-02-06 14:29:32,637 INFO L226 Difference]: Without dead ends: 22 [2025-02-06 14:29:32,638 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 [2025-02-06 14:29:32,639 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:32,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:29:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-06 14:29:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-02-06 14:29:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 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) [2025-02-06 14:29:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-02-06 14:29:32,644 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-02-06 14:29:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:32,645 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-02-06 14:29:32,645 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) [2025-02-06 14:29:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-02-06 14:29:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 14:29:32,645 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:32,645 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:29:32,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 14:29:32,647 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:32,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:32,648 INFO L85 PathProgramCache]: Analyzing trace with hash -989645326, now seen corresponding path program 1 times [2025-02-06 14:29:32,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:32,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841849556] [2025-02-06 14:29:32,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:32,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:32,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 14:29:32,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 14:29:32,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:32,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-06 14:29:32,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:32,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841849556] [2025-02-06 14:29:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841849556] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:29:32,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:29:32,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:29:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297232232] [2025-02-06 14:29:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:29:32,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:29:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:32,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:29:32,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:29:32,834 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2025-02-06 14:29:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:32,870 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-02-06 14:29:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:29:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 29 [2025-02-06 14:29:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:32,872 INFO L225 Difference]: With dead ends: 34 [2025-02-06 14:29:32,872 INFO L226 Difference]: Without dead ends: 32 [2025-02-06 14:29:32,872 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 [2025-02-06 14:29:32,872 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:32,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:29:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-06 14:29:32,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-02-06 14:29:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 14:29:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-02-06 14:29:32,878 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2025-02-06 14:29:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:32,878 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-02-06 14:29:32,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2025-02-06 14:29:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-02-06 14:29:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 14:29:32,879 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:32,879 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] [2025-02-06 14:29:32,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 14:29:32,884 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:32,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1650141125, now seen corresponding path program 1 times [2025-02-06 14:29:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797924109] [2025-02-06 14:29:32,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:32,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:29:32,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:29:32,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:32,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:29:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797924109] [2025-02-06 14:29:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797924109] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484004442] [2025-02-06 14:29:33,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:33,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:33,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:33,010 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) [2025-02-06 14:29:33,011 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 [2025-02-06 14:29:33,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:29:33,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:29:33,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:33,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:33,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 14:29:33,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 14:29:33,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 14:29:33,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484004442] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:33,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:33,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-02-06 14:29:33,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488469483] [2025-02-06 14:29:33,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:33,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 14:29:33,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:33,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 14:29:33,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:29:33,324 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 14:29:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:33,518 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2025-02-06 14:29:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 14:29:33,518 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2025-02-06 14:29:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:33,519 INFO L225 Difference]: With dead ends: 90 [2025-02-06 14:29:33,519 INFO L226 Difference]: Without dead ends: 64 [2025-02-06 14:29:33,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:29:33,525 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:33,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 94 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:29:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-06 14:29:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2025-02-06 14:29:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2025-02-06 14:29:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2025-02-06 14:29:33,541 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2025-02-06 14:29:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:33,542 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2025-02-06 14:29:33,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 14:29:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2025-02-06 14:29:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 14:29:33,543 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:33,543 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] [2025-02-06 14:29:33,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 14:29:33,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:33,747 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:33,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:33,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1771203833, now seen corresponding path program 2 times [2025-02-06 14:29:33,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:33,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074554813] [2025-02-06 14:29:33,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:33,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:33,753 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 14:29:33,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:29:33,757 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:33,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:29:33,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074554813] [2025-02-06 14:29:33,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074554813] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559103206] [2025-02-06 14:29:33,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:33,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:33,815 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) [2025-02-06 14:29:33,817 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 [2025-02-06 14:29:33,837 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 14:29:33,847 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:29:33,847 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:33,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:33,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 14:29:33,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:29:33,892 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:29:33,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559103206] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:29:33,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:29:33,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-06 14:29:33,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476957157] [2025-02-06 14:29:33,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:29:33,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:29:33,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:33,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:29:33,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:29:33,894 INFO L87 Difference]: Start difference. First operand 52 states and 67 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:29:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:33,920 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2025-02-06 14:29:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:29:33,920 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-02-06 14:29:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:33,921 INFO L225 Difference]: With dead ends: 59 [2025-02-06 14:29:33,921 INFO L226 Difference]: Without dead ends: 58 [2025-02-06 14:29:33,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:29:33,922 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:33,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:29:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-06 14:29:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2025-02-06 14:29:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2025-02-06 14:29:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2025-02-06 14:29:33,932 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2025-02-06 14:29:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:33,936 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2025-02-06 14:29:33,936 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:29:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2025-02-06 14:29:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 14:29:33,936 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:33,936 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] [2025-02-06 14:29:33,946 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 [2025-02-06 14:29:34,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:34,141 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:34,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash 927255998, now seen corresponding path program 1 times [2025-02-06 14:29:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:34,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864574008] [2025-02-06 14:29:34,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:34,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:34,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 14:29:34,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 14:29:34,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:34,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:29:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864574008] [2025-02-06 14:29:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864574008] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922386622] [2025-02-06 14:29:34,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:34,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:34,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:34,229 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) [2025-02-06 14:29:34,231 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 [2025-02-06 14:29:34,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 14:29:34,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 14:29:34,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:34,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:34,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 14:29:34,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:29:34,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:29:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922386622] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:29:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:29:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-02-06 14:29:34,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214780924] [2025-02-06 14:29:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:29:34,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:29:34,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:34,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:29:34,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:29:34,294 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:29:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:34,318 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2025-02-06 14:29:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:29:34,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2025-02-06 14:29:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:34,319 INFO L225 Difference]: With dead ends: 81 [2025-02-06 14:29:34,319 INFO L226 Difference]: Without dead ends: 80 [2025-02-06 14:29:34,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:29:34,320 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:34,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 67 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:29:34,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-06 14:29:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2025-02-06 14:29:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2025-02-06 14:29:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2025-02-06 14:29:34,328 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 25 [2025-02-06 14:29:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:34,329 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2025-02-06 14:29:34,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:29:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2025-02-06 14:29:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-06 14:29:34,330 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:34,330 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:29:34,335 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 [2025-02-06 14:29:34,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:34,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:34,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash -72861698, now seen corresponding path program 1 times [2025-02-06 14:29:34,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:34,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720033722] [2025-02-06 14:29:34,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:34,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:34,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 14:29:34,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 14:29:34,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:34,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-06 14:29:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720033722] [2025-02-06 14:29:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720033722] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738599740] [2025-02-06 14:29:34,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:34,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:34,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:34,650 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) [2025-02-06 14:29:34,652 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 [2025-02-06 14:29:34,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 14:29:34,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 14:29:34,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:34,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:34,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 14:29:34,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-02-06 14:29:34,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-06 14:29:34,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738599740] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:34,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:34,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-02-06 14:29:34,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623941614] [2025-02-06 14:29:34,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:34,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 14:29:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:34,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 14:29:34,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:29:34,900 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:29:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:35,050 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2025-02-06 14:29:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 14:29:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2025-02-06 14:29:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:35,052 INFO L225 Difference]: With dead ends: 140 [2025-02-06 14:29:35,052 INFO L226 Difference]: Without dead ends: 138 [2025-02-06 14:29:35,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2025-02-06 14:29:35,053 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:35,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 171 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:29:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-06 14:29:35,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2025-02-06 14:29:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.08) internal successors, (81), 74 states have internal predecessors, (81), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2025-02-06 14:29:35,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2025-02-06 14:29:35,064 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 51 [2025-02-06 14:29:35,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:35,064 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2025-02-06 14:29:35,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:29:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2025-02-06 14:29:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-06 14:29:35,065 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:35,065 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-02-06 14:29:35,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 14:29:35,266 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,SelfDestructingSolverStorable6 [2025-02-06 14:29:35,266 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:35,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1306687898, now seen corresponding path program 1 times [2025-02-06 14:29:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:35,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137467016] [2025-02-06 14:29:35,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:35,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:35,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 14:29:35,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 14:29:35,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:35,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 38 proven. 86 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-06 14:29:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137467016] [2025-02-06 14:29:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137467016] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529460747] [2025-02-06 14:29:35,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:29:35,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:35,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:35,393 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) [2025-02-06 14:29:35,395 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 [2025-02-06 14:29:35,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 14:29:35,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 14:29:35,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:35,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:35,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 14:29:35,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 50 proven. 92 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-06 14:29:35,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 50 proven. 95 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-02-06 14:29:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529460747] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:35,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:35,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2025-02-06 14:29:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652311630] [2025-02-06 14:29:35,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:35,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 14:29:35,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:35,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 14:29:35,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:29:35,807 INFO L87 Difference]: Start difference. First operand 97 states and 158 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2025-02-06 14:29:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:35,939 INFO L93 Difference]: Finished difference Result 173 states and 298 transitions. [2025-02-06 14:29:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 14:29:35,940 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 83 [2025-02-06 14:29:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:35,941 INFO L225 Difference]: With dead ends: 173 [2025-02-06 14:29:35,941 INFO L226 Difference]: Without dead ends: 79 [2025-02-06 14:29:35,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 158 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:29:35,942 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 106 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:35,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 62 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:29:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-06 14:29:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2025-02-06 14:29:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 52 states have internal predecessors, (60), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (26), 12 states have call predecessors, (26), 6 states have call successors, (26) [2025-02-06 14:29:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2025-02-06 14:29:35,953 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 83 [2025-02-06 14:29:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:35,954 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2025-02-06 14:29:35,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2025-02-06 14:29:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2025-02-06 14:29:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-02-06 14:29:35,955 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:35,955 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1] [2025-02-06 14:29:35,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 14:29:36,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:36,156 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:36,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:36,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2123588253, now seen corresponding path program 2 times [2025-02-06 14:29:36,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:36,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937824557] [2025-02-06 14:29:36,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:36,162 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 102 statements into 2 equivalence classes. [2025-02-06 14:29:36,169 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 102 of 102 statements. [2025-02-06 14:29:36,170 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:36,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 47 proven. 96 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-06 14:29:36,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:36,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937824557] [2025-02-06 14:29:36,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937824557] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:36,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204984733] [2025-02-06 14:29:36,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:36,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:36,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:36,262 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) [2025-02-06 14:29:36,265 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 [2025-02-06 14:29:36,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 102 statements into 2 equivalence classes. [2025-02-06 14:29:36,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 102 of 102 statements. [2025-02-06 14:29:36,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:36,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:36,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 14:29:36,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 200 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-02-06 14:29:36,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 48 proven. 121 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-02-06 14:29:36,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204984733] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:36,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:36,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2025-02-06 14:29:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486113046] [2025-02-06 14:29:36,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:36,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 14:29:36,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:36,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 14:29:36,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-02-06 14:29:36,577 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2025-02-06 14:29:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:36,648 INFO L93 Difference]: Finished difference Result 128 states and 178 transitions. [2025-02-06 14:29:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:29:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 102 [2025-02-06 14:29:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:36,649 INFO L225 Difference]: With dead ends: 128 [2025-02-06 14:29:36,649 INFO L226 Difference]: Without dead ends: 62 [2025-02-06 14:29:36,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 196 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2025-02-06 14:29:36,650 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:36,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 61 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:29:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-06 14:29:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2025-02-06 14:29:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 45 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 10 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-06 14:29:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2025-02-06 14:29:36,655 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 102 [2025-02-06 14:29:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:36,655 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2025-02-06 14:29:36,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2025-02-06 14:29:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2025-02-06 14:29:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-02-06 14:29:36,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:36,656 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-02-06 14:29:36,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 14:29:36,860 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,SelfDestructingSolverStorable8 [2025-02-06 14:29:36,860 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:36,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1966959960, now seen corresponding path program 3 times [2025-02-06 14:29:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:36,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106066580] [2025-02-06 14:29:36,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:29:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:36,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 89 statements into 8 equivalence classes. [2025-02-06 14:29:36,875 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 50 of 89 statements. [2025-02-06 14:29:36,877 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 14:29:36,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-02-06 14:29:37,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:37,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106066580] [2025-02-06 14:29:37,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106066580] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:37,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215717288] [2025-02-06 14:29:37,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:29:37,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:37,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:37,007 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) [2025-02-06 14:29:37,008 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 [2025-02-06 14:29:37,057 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 89 statements into 8 equivalence classes. [2025-02-06 14:29:37,067 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 50 of 89 statements. [2025-02-06 14:29:37,067 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 14:29:37,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:37,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 14:29:37,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2025-02-06 14:29:37,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2025-02-06 14:29:37,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215717288] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:37,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:37,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2025-02-06 14:29:37,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566427541] [2025-02-06 14:29:37,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:37,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 14:29:37,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:37,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 14:29:37,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:29:37,282 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2025-02-06 14:29:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:37,335 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2025-02-06 14:29:37,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:29:37,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 89 [2025-02-06 14:29:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:37,336 INFO L225 Difference]: With dead ends: 60 [2025-02-06 14:29:37,336 INFO L226 Difference]: Without dead ends: 59 [2025-02-06 14:29:37,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-02-06 14:29:37,337 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:37,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 117 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:29:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-06 14:29:37,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2025-02-06 14:29:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-06 14:29:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2025-02-06 14:29:37,342 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 89 [2025-02-06 14:29:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:37,343 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2025-02-06 14:29:37,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2025-02-06 14:29:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2025-02-06 14:29:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-06 14:29:37,344 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:37,344 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 12, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 1, 1, 1, 1] [2025-02-06 14:29:37,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 14:29:37,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:37,545 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:37,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash 401923313, now seen corresponding path program 2 times [2025-02-06 14:29:37,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394853672] [2025-02-06 14:29:37,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:37,551 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 130 statements into 2 equivalence classes. [2025-02-06 14:29:37,561 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 130 of 130 statements. [2025-02-06 14:29:37,561 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:37,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 119 proven. 221 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-02-06 14:29:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394853672] [2025-02-06 14:29:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394853672] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282471965] [2025-02-06 14:29:37,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:37,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:37,731 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) [2025-02-06 14:29:37,733 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 [2025-02-06 14:29:37,756 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 130 statements into 2 equivalence classes. [2025-02-06 14:29:37,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 130 of 130 statements. [2025-02-06 14:29:37,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:37,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:37,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 14:29:37,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 141 proven. 224 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2025-02-06 14:29:37,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 141 proven. 240 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-02-06 14:29:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282471965] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:38,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:38,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-02-06 14:29:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166426555] [2025-02-06 14:29:38,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:38,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 14:29:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:38,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 14:29:38,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-02-06 14:29:38,347 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 14 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (20), 9 states have call predecessors, (20), 14 states have call successors, (20) [2025-02-06 14:29:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:38,545 INFO L93 Difference]: Finished difference Result 133 states and 168 transitions. [2025-02-06 14:29:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:29:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 14 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (20), 9 states have call predecessors, (20), 14 states have call successors, (20) Word has length 130 [2025-02-06 14:29:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:38,547 INFO L225 Difference]: With dead ends: 133 [2025-02-06 14:29:38,547 INFO L226 Difference]: Without dead ends: 83 [2025-02-06 14:29:38,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 251 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2025-02-06 14:29:38,548 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 135 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:38,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 87 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:29:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-06 14:29:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2025-02-06 14:29:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 56 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (17), 11 states have call predecessors, (17), 7 states have call successors, (17) [2025-02-06 14:29:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2025-02-06 14:29:38,554 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 130 [2025-02-06 14:29:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:38,554 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2025-02-06 14:29:38,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 14 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (20), 9 states have call predecessors, (20), 14 states have call successors, (20) [2025-02-06 14:29:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2025-02-06 14:29:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-06 14:29:38,555 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:38,555 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2025-02-06 14:29:38,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 14:29:38,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:38,760 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:38,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1623830502, now seen corresponding path program 3 times [2025-02-06 14:29:38,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:38,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705586478] [2025-02-06 14:29:38,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:29:38,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:38,764 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 91 statements into 8 equivalence classes. [2025-02-06 14:29:38,773 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 79 of 91 statements. [2025-02-06 14:29:38,773 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 14:29:38,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 102 proven. 38 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2025-02-06 14:29:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705586478] [2025-02-06 14:29:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705586478] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:38,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573772974] [2025-02-06 14:29:38,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:29:38,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:38,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:38,843 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) [2025-02-06 14:29:38,849 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 [2025-02-06 14:29:38,875 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 91 statements into 8 equivalence classes. [2025-02-06 14:29:38,890 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 79 of 91 statements. [2025-02-06 14:29:38,890 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 14:29:38,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:38,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 14:29:38,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-02-06 14:29:39,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2025-02-06 14:29:39,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573772974] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:39,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:39,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2025-02-06 14:29:39,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061526903] [2025-02-06 14:29:39,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:39,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 14:29:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:39,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 14:29:39,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2025-02-06 14:29:39,610 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 30 states, 30 states have (on average 3.3) internal successors, (99), 30 states have internal predecessors, (99), 10 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (22), 19 states have call predecessors, (22), 10 states have call successors, (22) [2025-02-06 14:29:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:40,230 INFO L93 Difference]: Finished difference Result 192 states and 278 transitions. [2025-02-06 14:29:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 14:29:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3) internal successors, (99), 30 states have internal predecessors, (99), 10 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (22), 19 states have call predecessors, (22), 10 states have call successors, (22) Word has length 91 [2025-02-06 14:29:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:40,231 INFO L225 Difference]: With dead ends: 192 [2025-02-06 14:29:40,231 INFO L226 Difference]: Without dead ends: 124 [2025-02-06 14:29:40,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=2709, Unknown=0, NotChecked=0, Total=3306 [2025-02-06 14:29:40,233 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 164 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:40,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 156 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:29:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-06 14:29:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 97. [2025-02-06 14:29:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 75 states have internal predecessors, (80), 11 states have call successors, (11), 5 states have call predecessors, (11), 9 states have return successors, (47), 16 states have call predecessors, (47), 10 states have call successors, (47) [2025-02-06 14:29:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 138 transitions. [2025-02-06 14:29:40,245 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 138 transitions. Word has length 91 [2025-02-06 14:29:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:40,245 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 138 transitions. [2025-02-06 14:29:40,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3) internal successors, (99), 30 states have internal predecessors, (99), 10 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (22), 19 states have call predecessors, (22), 10 states have call successors, (22) [2025-02-06 14:29:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 138 transitions. [2025-02-06 14:29:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-02-06 14:29:40,248 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:40,248 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 10, 7, 1, 1, 1, 1] [2025-02-06 14:29:40,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 14:29:40,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:40,452 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:40,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2017069360, now seen corresponding path program 4 times [2025-02-06 14:29:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145867191] [2025-02-06 14:29:40,453 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:29:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:40,464 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 319 statements into 2 equivalence classes. [2025-02-06 14:29:40,473 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 189 of 319 statements. [2025-02-06 14:29:40,473 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:29:40,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 377 proven. 976 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2025-02-06 14:29:40,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:40,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145867191] [2025-02-06 14:29:40,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145867191] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:40,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580698424] [2025-02-06 14:29:40,657 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:29:40,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:40,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:40,661 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) [2025-02-06 14:29:40,662 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 [2025-02-06 14:29:40,703 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 319 statements into 2 equivalence classes. [2025-02-06 14:29:40,729 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 189 of 319 statements. [2025-02-06 14:29:40,729 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:29:40,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:40,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:29:40,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 359 proven. 1338 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2025-02-06 14:29:40,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 359 proven. 1377 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2025-02-06 14:29:41,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580698424] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:41,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:41,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 24 [2025-02-06 14:29:41,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661044507] [2025-02-06 14:29:41,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:41,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 14:29:41,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:41,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 14:29:41,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:29:41,754 INFO L87 Difference]: Start difference. First operand 97 states and 138 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2025-02-06 14:29:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:42,021 INFO L93 Difference]: Finished difference Result 247 states and 397 transitions. [2025-02-06 14:29:42,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 14:29:42,026 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) Word has length 319 [2025-02-06 14:29:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:42,027 INFO L225 Difference]: With dead ends: 247 [2025-02-06 14:29:42,027 INFO L226 Difference]: Without dead ends: 155 [2025-02-06 14:29:42,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 625 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=416, Invalid=1144, Unknown=0, NotChecked=0, Total=1560 [2025-02-06 14:29:42,029 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 154 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:42,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 126 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:29:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-06 14:29:42,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 139. [2025-02-06 14:29:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.045045045045045) internal successors, (116), 107 states have internal predecessors, (116), 15 states have call successors, (15), 8 states have call predecessors, (15), 12 states have return successors, (57), 23 states have call predecessors, (57), 14 states have call successors, (57) [2025-02-06 14:29:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2025-02-06 14:29:42,038 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 319 [2025-02-06 14:29:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:42,038 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2025-02-06 14:29:42,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2025-02-06 14:29:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2025-02-06 14:29:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2025-02-06 14:29:42,040 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:42,040 INFO L218 NwaCegarLoop]: trace histogram [29, 28, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 9, 6, 1, 1, 1, 1] [2025-02-06 14:29:42,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 14:29:42,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 14:29:42,241 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:42,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1026055369, now seen corresponding path program 5 times [2025-02-06 14:29:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:42,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996270459] [2025-02-06 14:29:42,242 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:29:42,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:42,249 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 280 statements into 18 equivalence classes. [2025-02-06 14:29:42,288 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 225 of 280 statements. [2025-02-06 14:29:42,289 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-06 14:29:42,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2731 backedges. 492 proven. 976 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2025-02-06 14:29:42,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:42,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996270459] [2025-02-06 14:29:42,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996270459] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:42,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337158262] [2025-02-06 14:29:42,832 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:29:42,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:42,835 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) [2025-02-06 14:29:42,837 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 [2025-02-06 14:29:42,878 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 280 statements into 18 equivalence classes. [2025-02-06 14:29:42,914 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 225 of 280 statements. [2025-02-06 14:29:42,914 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-06 14:29:42,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:42,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:29:42,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2731 backedges. 486 proven. 992 refuted. 0 times theorem prover too weak. 1253 trivial. 0 not checked. [2025-02-06 14:29:43,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2731 backedges. 494 proven. 1040 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2025-02-06 14:29:44,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337158262] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:44,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:44,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 24 [2025-02-06 14:29:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18086238] [2025-02-06 14:29:44,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:44,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 14:29:44,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:44,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 14:29:44,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:29:44,167 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 17 states have call successors, (22), 1 states have call predecessors, (22), 11 states have return successors, (28), 13 states have call predecessors, (28), 17 states have call successors, (28) [2025-02-06 14:29:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:44,524 INFO L93 Difference]: Finished difference Result 282 states and 442 transitions. [2025-02-06 14:29:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 14:29:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 17 states have call successors, (22), 1 states have call predecessors, (22), 11 states have return successors, (28), 13 states have call predecessors, (28), 17 states have call successors, (28) Word has length 280 [2025-02-06 14:29:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:44,527 INFO L225 Difference]: With dead ends: 282 [2025-02-06 14:29:44,527 INFO L226 Difference]: Without dead ends: 148 [2025-02-06 14:29:44,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 550 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=490, Invalid=1402, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 14:29:44,530 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 283 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:44,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 138 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:29:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-02-06 14:29:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 118. [2025-02-06 14:29:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.063157894736842) internal successors, (101), 92 states have internal predecessors, (101), 14 states have call successors, (14), 10 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2025-02-06 14:29:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2025-02-06 14:29:44,539 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 280 [2025-02-06 14:29:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:44,539 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2025-02-06 14:29:44,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 17 states have call successors, (22), 1 states have call predecessors, (22), 11 states have return successors, (28), 13 states have call predecessors, (28), 17 states have call successors, (28) [2025-02-06 14:29:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2025-02-06 14:29:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2025-02-06 14:29:44,545 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:44,545 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 22, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 9, 5, 1, 1, 1, 1] [2025-02-06 14:29:44,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 14:29:44,750 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,SelfDestructingSolverStorable13 [2025-02-06 14:29:44,750 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:44,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash 925936582, now seen corresponding path program 6 times [2025-02-06 14:29:44,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:44,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511855279] [2025-02-06 14:29:44,751 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:29:44,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:44,760 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 261 statements into 19 equivalence classes. [2025-02-06 14:29:44,773 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) and asserted 184 of 261 statements. [2025-02-06 14:29:44,773 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2025-02-06 14:29:44,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 502 proven. 671 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2025-02-06 14:29:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511855279] [2025-02-06 14:29:44,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511855279] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484633994] [2025-02-06 14:29:44,972 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:29:44,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:44,974 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) [2025-02-06 14:29:44,975 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 [2025-02-06 14:29:45,027 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 261 statements into 19 equivalence classes. [2025-02-06 14:29:45,057 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) and asserted 184 of 261 statements. [2025-02-06 14:29:45,058 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2025-02-06 14:29:45,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:45,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:29:45,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 485 proven. 734 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2025-02-06 14:29:45,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 481 proven. 786 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2025-02-06 14:29:46,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484633994] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:46,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:46,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 18] total 23 [2025-02-06 14:29:46,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655327127] [2025-02-06 14:29:46,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:46,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:29:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:46,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:29:46,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:29:46,268 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2025-02-06 14:29:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:46,499 INFO L93 Difference]: Finished difference Result 236 states and 317 transitions. [2025-02-06 14:29:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 14:29:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) Word has length 261 [2025-02-06 14:29:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:46,502 INFO L225 Difference]: With dead ends: 236 [2025-02-06 14:29:46,502 INFO L226 Difference]: Without dead ends: 123 [2025-02-06 14:29:46,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 508 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=312, Invalid=810, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 14:29:46,503 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 64 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:46,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 167 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:29:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-02-06 14:29:46,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 112. [2025-02-06 14:29:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 88 states have internal predecessors, (93), 14 states have call successors, (14), 11 states have call predecessors, (14), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) [2025-02-06 14:29:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2025-02-06 14:29:46,510 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 261 [2025-02-06 14:29:46,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:46,511 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2025-02-06 14:29:46,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2025-02-06 14:29:46,511 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2025-02-06 14:29:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2025-02-06 14:29:46,520 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:46,520 INFO L218 NwaCegarLoop]: trace histogram [71, 65, 58, 37, 37, 37, 37, 33, 33, 33, 33, 33, 32, 32, 32, 31, 21, 13, 1, 1, 1, 1] [2025-02-06 14:29:46,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 14:29:46,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:46,724 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:46,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash -432686382, now seen corresponding path program 7 times [2025-02-06 14:29:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:46,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905271851] [2025-02-06 14:29:46,725 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:29:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:46,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 672 statements into 1 equivalence classes. [2025-02-06 14:29:46,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 672 of 672 statements. [2025-02-06 14:29:46,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:46,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16381 backedges. 1058 proven. 3742 refuted. 0 times theorem prover too weak. 11581 trivial. 0 not checked. [2025-02-06 14:29:47,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905271851] [2025-02-06 14:29:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905271851] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276345864] [2025-02-06 14:29:47,547 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:29:47,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:47,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:47,549 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) [2025-02-06 14:29:47,550 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 [2025-02-06 14:29:47,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 672 statements into 1 equivalence classes. [2025-02-06 14:29:47,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 672 of 672 statements. [2025-02-06 14:29:47,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:29:47,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:47,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 14:29:47,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16381 backedges. 6816 proven. 2739 refuted. 0 times theorem prover too weak. 6826 trivial. 0 not checked. [2025-02-06 14:29:47,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16381 backedges. 1271 proven. 4054 refuted. 0 times theorem prover too weak. 11056 trivial. 0 not checked. [2025-02-06 14:29:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276345864] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:49,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:49,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 23] total 28 [2025-02-06 14:29:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467147575] [2025-02-06 14:29:49,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:49,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 14:29:49,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:49,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 14:29:49,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2025-02-06 14:29:49,267 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 28 states, 28 states have (on average 5.785714285714286) internal successors, (162), 28 states have internal predecessors, (162), 23 states have call successors, (29), 6 states have call predecessors, (29), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2025-02-06 14:29:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:49,602 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2025-02-06 14:29:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 14:29:49,602 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.785714285714286) internal successors, (162), 28 states have internal predecessors, (162), 23 states have call successors, (29), 6 states have call predecessors, (29), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) Word has length 672 [2025-02-06 14:29:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:49,604 INFO L225 Difference]: With dead ends: 264 [2025-02-06 14:29:49,604 INFO L226 Difference]: Without dead ends: 157 [2025-02-06 14:29:49,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1328 SyntacticMatches, 17 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=699, Invalid=1851, Unknown=0, NotChecked=0, Total=2550 [2025-02-06 14:29:49,605 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 227 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:49,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 120 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:29:49,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-06 14:29:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2025-02-06 14:29:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 98 states have internal predecessors, (102), 16 states have call successors, (16), 12 states have call predecessors, (16), 8 states have return successors, (35), 13 states have call predecessors, (35), 15 states have call successors, (35) [2025-02-06 14:29:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2025-02-06 14:29:49,613 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 672 [2025-02-06 14:29:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:49,613 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2025-02-06 14:29:49,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.785714285714286) internal successors, (162), 28 states have internal predecessors, (162), 23 states have call successors, (29), 6 states have call predecessors, (29), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2025-02-06 14:29:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2025-02-06 14:29:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2025-02-06 14:29:49,616 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:49,617 INFO L218 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2025-02-06 14:29:49,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 14:29:49,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:49,821 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:49,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -929567143, now seen corresponding path program 8 times [2025-02-06 14:29:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015872824] [2025-02-06 14:29:49,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:49,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 398 statements into 2 equivalence classes. [2025-02-06 14:29:49,848 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 398 of 398 statements. [2025-02-06 14:29:49,848 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:49,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 830 proven. 1470 refuted. 0 times theorem prover too weak. 3328 trivial. 0 not checked. [2025-02-06 14:29:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:29:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015872824] [2025-02-06 14:29:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015872824] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:29:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258517319] [2025-02-06 14:29:51,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:29:51,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:29:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:29:51,319 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) [2025-02-06 14:29:51,320 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 [2025-02-06 14:29:51,413 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 398 statements into 2 equivalence classes. [2025-02-06 14:29:51,467 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 398 of 398 statements. [2025-02-06 14:29:51,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:29:51,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:29:51,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-06 14:29:51,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:29:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2025-02-06 14:29:51,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:29:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2025-02-06 14:29:57,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258517319] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:29:57,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:29:57,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2025-02-06 14:29:57,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861366297] [2025-02-06 14:29:57,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:29:57,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-06 14:29:57,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:29:57,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-06 14:29:57,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2025-02-06 14:29:57,094 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2025-02-06 14:29:57,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:29:57,242 INFO L93 Difference]: Finished difference Result 155 states and 207 transitions. [2025-02-06 14:29:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 14:29:57,243 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) Word has length 398 [2025-02-06 14:29:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:29:57,244 INFO L225 Difference]: With dead ends: 155 [2025-02-06 14:29:57,244 INFO L226 Difference]: Without dead ends: 154 [2025-02-06 14:29:57,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 780 SyntacticMatches, 51 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=544, Invalid=1906, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 14:29:57,245 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:29:57,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 201 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:29:57,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-02-06 14:29:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 145. [2025-02-06 14:29:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 114 states have internal predecessors, (119), 18 states have call successors, (18), 12 states have call predecessors, (18), 10 states have return successors, (55), 18 states have call predecessors, (55), 17 states have call successors, (55) [2025-02-06 14:29:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2025-02-06 14:29:57,256 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 398 [2025-02-06 14:29:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:29:57,257 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2025-02-06 14:29:57,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2025-02-06 14:29:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2025-02-06 14:29:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1236 [2025-02-06 14:29:57,265 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:29:57,266 INFO L218 NwaCegarLoop]: trace histogram [128, 123, 104, 65, 65, 65, 65, 62, 62, 62, 62, 62, 61, 61, 61, 60, 39, 24, 1, 1, 1, 1] [2025-02-06 14:29:57,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 14:29:57,469 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,SelfDestructingSolverStorable16 [2025-02-06 14:29:57,470 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:29:57,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:29:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1443375855, now seen corresponding path program 9 times [2025-02-06 14:29:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:29:57,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354779417] [2025-02-06 14:29:57,470 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:29:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:29:57,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1235 statements into 91 equivalence classes. [2025-02-06 14:29:57,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) and asserted 833 of 1235 statements. [2025-02-06 14:29:57,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2025-02-06 14:29:57,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 55912 backedges. 16624 proven. 5959 refuted. 0 times theorem prover too weak. 33329 trivial. 0 not checked. [2025-02-06 14:30:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:30:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354779417] [2025-02-06 14:30:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354779417] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:30:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653562436] [2025-02-06 14:30:04,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:30:04,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:04,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:30:04,681 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) [2025-02-06 14:30:04,687 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 [2025-02-06 14:30:04,855 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1235 statements into 91 equivalence classes. [2025-02-06 14:30:05,049 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) and asserted 833 of 1235 statements. [2025-02-06 14:30:05,049 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2025-02-06 14:30:05,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:05,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 165 conjuncts are in the unsatisfiable core [2025-02-06 14:30:05,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:30:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 55912 backedges. 16360 proven. 4596 refuted. 0 times theorem prover too weak. 34956 trivial. 0 not checked. [2025-02-06 14:30:05,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:30:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 55912 backedges. 17227 proven. 4261 refuted. 0 times theorem prover too weak. 34424 trivial. 0 not checked. [2025-02-06 14:30:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653562436] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:30:24,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:30:24,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 38] total 54 [2025-02-06 14:30:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828850409] [2025-02-06 14:30:24,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:30:24,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-06 14:30:24,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:30:24,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-06 14:30:24,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=2290, Unknown=0, NotChecked=0, Total=2970 [2025-02-06 14:30:24,438 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 55 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 55 states have internal predecessors, (150), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (40), 39 states have call predecessors, (40), 14 states have call successors, (40) [2025-02-06 14:30:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:30:24,663 INFO L93 Difference]: Finished difference Result 203 states and 303 transitions. [2025-02-06 14:30:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 14:30:24,664 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 55 states have internal predecessors, (150), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (40), 39 states have call predecessors, (40), 14 states have call successors, (40) Word has length 1235 [2025-02-06 14:30:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:30:24,666 INFO L225 Difference]: With dead ends: 203 [2025-02-06 14:30:24,667 INFO L226 Difference]: Without dead ends: 202 [2025-02-06 14:30:24,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2641 GetRequests, 2461 SyntacticMatches, 119 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4966 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=871, Invalid=3035, Unknown=0, NotChecked=0, Total=3906 [2025-02-06 14:30:24,672 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:30:24,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 189 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:30:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-02-06 14:30:24,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 163. [2025-02-06 14:30:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.023076923076923) internal successors, (133), 128 states have internal predecessors, (133), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (83), 22 states have call predecessors, (83), 19 states have call successors, (83) [2025-02-06 14:30:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 236 transitions. [2025-02-06 14:30:24,692 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 236 transitions. Word has length 1235 [2025-02-06 14:30:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:30:24,693 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 236 transitions. [2025-02-06 14:30:24,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 55 states have internal predecessors, (150), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (40), 39 states have call predecessors, (40), 14 states have call successors, (40) [2025-02-06 14:30:24,693 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 236 transitions. [2025-02-06 14:30:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1635 [2025-02-06 14:30:24,713 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:30:24,714 INFO L218 NwaCegarLoop]: trace histogram [167, 166, 135, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 82, 52, 32, 1, 1, 1, 1] [2025-02-06 14:30:24,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 14:30:24,914 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,SelfDestructingSolverStorable17 [2025-02-06 14:30:24,915 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:30:24,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:30:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1146778951, now seen corresponding path program 10 times [2025-02-06 14:30:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:30:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596454410] [2025-02-06 14:30:24,919 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:30:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:30:24,960 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1634 statements into 2 equivalence classes. [2025-02-06 14:30:25,060 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 968 of 1634 statements. [2025-02-06 14:30:25,061 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:30:25,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 98187 backedges. 2908 proven. 13238 refuted. 0 times theorem prover too weak. 82041 trivial. 0 not checked. [2025-02-06 14:30:26,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:30:26,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596454410] [2025-02-06 14:30:26,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596454410] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:30:26,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451525243] [2025-02-06 14:30:26,245 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:30:26,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:26,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:30:26,247 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) [2025-02-06 14:30:26,248 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 [2025-02-06 14:30:26,593 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1634 statements into 2 equivalence classes. [2025-02-06 14:30:26,724 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 968 of 1634 statements. [2025-02-06 14:30:26,724 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:30:26,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:26,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 14:30:26,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:30:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 98187 backedges. 3425 proven. 15226 refuted. 0 times theorem prover too weak. 79536 trivial. 0 not checked. [2025-02-06 14:30:26,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:30:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 98187 backedges. 3425 proven. 15394 refuted. 0 times theorem prover too weak. 79368 trivial. 0 not checked. [2025-02-06 14:30:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451525243] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:30:30,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:30:30,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2025-02-06 14:30:30,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214382006] [2025-02-06 14:30:30,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:30:30,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 14:30:30,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:30:30,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 14:30:30,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 14:30:30,771 INFO L87 Difference]: Start difference. First operand 163 states and 236 transitions. Second operand has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) [2025-02-06 14:30:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:30:31,311 INFO L93 Difference]: Finished difference Result 394 states and 663 transitions. [2025-02-06 14:30:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-06 14:30:31,311 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) Word has length 1634 [2025-02-06 14:30:31,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:30:31,314 INFO L225 Difference]: With dead ends: 394 [2025-02-06 14:30:31,314 INFO L226 Difference]: Without dead ends: 236 [2025-02-06 14:30:31,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3249 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2025-02-06 14:30:31,316 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 615 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:30:31,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 193 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:30:31,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-02-06 14:30:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2025-02-06 14:30:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 173 states have internal predecessors, (182), 27 states have call successors, (27), 17 states have call predecessors, (27), 15 states have return successors, (108), 29 states have call predecessors, (108), 26 states have call successors, (108) [2025-02-06 14:30:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 317 transitions. [2025-02-06 14:30:31,328 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 317 transitions. Word has length 1634 [2025-02-06 14:30:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:30:31,328 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 317 transitions. [2025-02-06 14:30:31,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) [2025-02-06 14:30:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 317 transitions. [2025-02-06 14:30:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2025-02-06 14:30:31,337 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:30:31,337 INFO L218 NwaCegarLoop]: trace histogram [142, 140, 115, 71, 71, 71, 71, 70, 70, 70, 70, 70, 70, 70, 70, 69, 44, 27, 1, 1, 1, 1] [2025-02-06 14:30:31,346 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 [2025-02-06 14:30:31,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:31,542 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:30:31,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:30:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1949205106, now seen corresponding path program 11 times [2025-02-06 14:30:31,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:30:31,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566616025] [2025-02-06 14:30:31,543 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:30:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:30:31,564 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1385 statements into 101 equivalence classes. [2025-02-06 14:30:31,628 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) and asserted 976 of 1385 statements. [2025-02-06 14:30:31,628 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) [2025-02-06 14:30:31,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 70397 backedges. 4163 proven. 9077 refuted. 0 times theorem prover too weak. 57157 trivial. 0 not checked. [2025-02-06 14:30:32,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:30:32,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566616025] [2025-02-06 14:30:32,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566616025] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:30:32,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585351267] [2025-02-06 14:30:32,484 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:30:32,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:32,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:30:32,486 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) [2025-02-06 14:30:32,487 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 [2025-02-06 14:30:32,871 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1385 statements into 101 equivalence classes. [2025-02-06 14:30:33,127 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) and asserted 976 of 1385 statements. [2025-02-06 14:30:33,127 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) [2025-02-06 14:30:33,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:33,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 14:30:33,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:30:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 70397 backedges. 37342 proven. 1448 refuted. 0 times theorem prover too weak. 31607 trivial. 0 not checked. [2025-02-06 14:30:33,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:30:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 70397 backedges. 4276 proven. 9608 refuted. 0 times theorem prover too weak. 56513 trivial. 0 not checked. [2025-02-06 14:30:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585351267] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:30:37,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:30:37,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 25] total 33 [2025-02-06 14:30:37,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266025832] [2025-02-06 14:30:37,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:30:37,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 14:30:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:30:37,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 14:30:37,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 14:30:37,389 INFO L87 Difference]: Start difference. First operand 220 states and 317 transitions. Second operand has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 33 states have internal predecessors, (186), 24 states have call successors, (32), 2 states have call predecessors, (32), 15 states have return successors, (41), 17 states have call predecessors, (41), 24 states have call successors, (41) [2025-02-06 14:30:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:30:37,738 INFO L93 Difference]: Finished difference Result 420 states and 625 transitions. [2025-02-06 14:30:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 14:30:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 33 states have internal predecessors, (186), 24 states have call successors, (32), 2 states have call predecessors, (32), 15 states have return successors, (41), 17 states have call predecessors, (41), 24 states have call successors, (41) Word has length 1385 [2025-02-06 14:30:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:30:37,741 INFO L225 Difference]: With dead ends: 420 [2025-02-06 14:30:37,741 INFO L226 Difference]: Without dead ends: 205 [2025-02-06 14:30:37,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2813 GetRequests, 2752 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 14:30:37,743 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 183 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:30:37,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 198 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:30:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-02-06 14:30:37,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 181. [2025-02-06 14:30:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 143 states have internal predecessors, (150), 23 states have call successors, (23), 17 states have call predecessors, (23), 11 states have return successors, (61), 20 states have call predecessors, (61), 22 states have call successors, (61) [2025-02-06 14:30:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 234 transitions. [2025-02-06 14:30:37,753 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 234 transitions. Word has length 1385 [2025-02-06 14:30:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:30:37,753 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 234 transitions. [2025-02-06 14:30:37,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 33 states have internal predecessors, (186), 24 states have call successors, (32), 2 states have call predecessors, (32), 15 states have return successors, (41), 17 states have call predecessors, (41), 24 states have call successors, (41) [2025-02-06 14:30:37,754 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 234 transitions. [2025-02-06 14:30:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2025-02-06 14:30:37,761 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:30:37,761 INFO L218 NwaCegarLoop]: trace histogram [136, 134, 110, 68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 67, 67, 66, 42, 26, 1, 1, 1, 1] [2025-02-06 14:30:37,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 14:30:37,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:37,962 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:30:37,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:30:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash -577166197, now seen corresponding path program 12 times [2025-02-06 14:30:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:30:37,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617532570] [2025-02-06 14:30:37,967 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:30:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:30:37,990 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1326 statements into 99 equivalence classes. [2025-02-06 14:30:38,133 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) and asserted 1276 of 1326 statements. [2025-02-06 14:30:38,133 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2025-02-06 14:30:38,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 6254 proven. 6164 refuted. 0 times theorem prover too weak. 52070 trivial. 0 not checked. [2025-02-06 14:30:39,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:30:39,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617532570] [2025-02-06 14:30:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617532570] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:30:39,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803899515] [2025-02-06 14:30:39,649 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:30:39,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:39,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:30:39,652 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) [2025-02-06 14:30:39,653 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 [2025-02-06 14:30:40,041 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1326 statements into 99 equivalence classes. [2025-02-06 14:30:40,439 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) and asserted 1276 of 1326 statements. [2025-02-06 14:30:40,440 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2025-02-06 14:30:40,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:40,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 2383 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 14:30:40,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:30:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 6107 proven. 6188 refuted. 0 times theorem prover too weak. 52193 trivial. 0 not checked. [2025-02-06 14:30:40,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:30:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 6123 proven. 6305 refuted. 0 times theorem prover too weak. 52060 trivial. 0 not checked. [2025-02-06 14:30:43,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803899515] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:30:43,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:30:43,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 31 [2025-02-06 14:30:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718198994] [2025-02-06 14:30:43,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:30:43,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 14:30:43,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:30:43,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 14:30:43,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2025-02-06 14:30:43,692 INFO L87 Difference]: Start difference. First operand 181 states and 234 transitions. Second operand has 31 states, 31 states have (on average 5.580645161290323) internal successors, (173), 31 states have internal predecessors, (173), 21 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 20 states have call predecessors, (38), 21 states have call successors, (38) [2025-02-06 14:30:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:30:44,269 INFO L93 Difference]: Finished difference Result 500 states and 665 transitions. [2025-02-06 14:30:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-06 14:30:44,271 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.580645161290323) internal successors, (173), 31 states have internal predecessors, (173), 21 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 20 states have call predecessors, (38), 21 states have call successors, (38) Word has length 1326 [2025-02-06 14:30:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:30:44,274 INFO L225 Difference]: With dead ends: 500 [2025-02-06 14:30:44,274 INFO L226 Difference]: Without dead ends: 293 [2025-02-06 14:30:44,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2719 GetRequests, 2640 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1123, Invalid=3433, Unknown=0, NotChecked=0, Total=4556 [2025-02-06 14:30:44,278 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 381 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:30:44,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 150 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:30:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2025-02-06 14:30:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 208. [2025-02-06 14:30:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 169 states have (on average 1.029585798816568) internal successors, (174), 165 states have internal predecessors, (174), 27 states have call successors, (27), 22 states have call predecessors, (27), 11 states have return successors, (67), 20 states have call predecessors, (67), 26 states have call successors, (67) [2025-02-06 14:30:44,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 268 transitions. [2025-02-06 14:30:44,300 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 268 transitions. Word has length 1326 [2025-02-06 14:30:44,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:30:44,301 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 268 transitions. [2025-02-06 14:30:44,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.580645161290323) internal successors, (173), 31 states have internal predecessors, (173), 21 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 20 states have call predecessors, (38), 21 states have call successors, (38) [2025-02-06 14:30:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 268 transitions. [2025-02-06 14:30:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2238 [2025-02-06 14:30:44,322 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:30:44,323 INFO L218 NwaCegarLoop]: trace histogram [229, 227, 185, 114, 114, 114, 114, 114, 114, 114, 114, 114, 113, 113, 113, 112, 71, 44, 1, 1, 1, 1] [2025-02-06 14:30:44,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-06 14:30:44,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:44,527 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:30:44,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:30:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash -865762975, now seen corresponding path program 13 times [2025-02-06 14:30:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:30:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976309777] [2025-02-06 14:30:44,528 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:30:44,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:30:44,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2237 statements into 1 equivalence classes. [2025-02-06 14:30:44,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2237 of 2237 statements. [2025-02-06 14:30:44,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:30:44,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 184605 backedges. 4912 proven. 20084 refuted. 0 times theorem prover too weak. 159609 trivial. 0 not checked. [2025-02-06 14:30:47,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:30:47,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976309777] [2025-02-06 14:30:47,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976309777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:30:47,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618524839] [2025-02-06 14:30:47,902 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:30:47,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:47,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:30:47,905 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) [2025-02-06 14:30:47,906 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 [2025-02-06 14:30:48,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2237 statements into 1 equivalence classes. [2025-02-06 14:30:48,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2237 of 2237 statements. [2025-02-06 14:30:48,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:30:48,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:30:48,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 4153 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 14:30:48,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:30:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 184605 backedges. 93352 proven. 5527 refuted. 0 times theorem prover too weak. 85726 trivial. 0 not checked. [2025-02-06 14:30:48,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:30:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 184605 backedges. 5350 proven. 22375 refuted. 0 times theorem prover too weak. 156880 trivial. 0 not checked. [2025-02-06 14:30:54,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618524839] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:30:54,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:30:54,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2025-02-06 14:30:54,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809268718] [2025-02-06 14:30:54,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:30:54,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 14:30:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:30:54,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 14:30:54,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 14:30:54,237 INFO L87 Difference]: Start difference. First operand 208 states and 268 transitions. Second operand has 36 states, 36 states have (on average 5.805555555555555) internal successors, (209), 36 states have internal predecessors, (209), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2025-02-06 14:30:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:30:54,702 INFO L93 Difference]: Finished difference Result 447 states and 602 transitions. [2025-02-06 14:30:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 14:30:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.805555555555555) internal successors, (209), 36 states have internal predecessors, (209), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) Word has length 2237 [2025-02-06 14:30:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:30:54,708 INFO L225 Difference]: With dead ends: 447 [2025-02-06 14:30:54,708 INFO L226 Difference]: Without dead ends: 244 [2025-02-06 14:30:54,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4523 GetRequests, 4453 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2025-02-06 14:30:54,713 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 224 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:30:54,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 290 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:30:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-02-06 14:30:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 202. [2025-02-06 14:30:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 164 states have (on average 1.024390243902439) internal successors, (168), 161 states have internal predecessors, (168), 27 states have call successors, (27), 22 states have call predecessors, (27), 10 states have return successors, (61), 18 states have call predecessors, (61), 26 states have call successors, (61) [2025-02-06 14:30:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 256 transitions. [2025-02-06 14:30:54,728 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 256 transitions. Word has length 2237 [2025-02-06 14:30:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:30:54,729 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 256 transitions. [2025-02-06 14:30:54,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.805555555555555) internal successors, (209), 36 states have internal predecessors, (209), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2025-02-06 14:30:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 256 transitions. [2025-02-06 14:30:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2825 [2025-02-06 14:30:54,758 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:30:54,759 INFO L218 NwaCegarLoop]: trace histogram [290, 285, 235, 146, 146, 146, 146, 143, 143, 143, 143, 143, 142, 142, 142, 141, 89, 55, 1, 1, 1, 1] [2025-02-06 14:30:54,772 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 [2025-02-06 14:30:54,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:30:54,963 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:30:54,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:30:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1715608108, now seen corresponding path program 14 times [2025-02-06 14:30:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:30:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925011251] [2025-02-06 14:30:54,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:30:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:30:55,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2824 statements into 2 equivalence classes. [2025-02-06 14:30:55,168 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 2824 of 2824 statements. [2025-02-06 14:30:55,168 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:30:55,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 294645 backedges. 8084 proven. 27028 refuted. 0 times theorem prover too weak. 259533 trivial. 0 not checked. [2025-02-06 14:31:02,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:02,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925011251] [2025-02-06 14:31:02,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925011251] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:02,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846333899] [2025-02-06 14:31:02,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:02,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:02,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:02,207 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) [2025-02-06 14:31:02,233 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 [2025-02-06 14:31:02,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2824 statements into 2 equivalence classes. [2025-02-06 14:31:03,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 2824 of 2824 statements. [2025-02-06 14:31:03,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:03,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:03,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 5234 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-06 14:31:03,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 294645 backedges. 114748 proven. 20414 refuted. 0 times theorem prover too weak. 159483 trivial. 0 not checked. [2025-02-06 14:31:03,517 INFO L312 TraceCheckSpWp]: Computing backward predicates...