./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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/Fibonacci03.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 be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 09:58:17,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 09:58:17,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 09:58:17,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 09:58:17,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 09:58:17,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 09:58:17,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 09:58:17,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 09:58:17,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 09:58:17,178 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 09:58:17,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 09:58:17,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 09:58:17,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 09:58:17,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 09:58:17,178 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 09:58:17,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 09:58:17,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 09:58:17,179 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 09:58:17,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 09:58:17,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 09:58:17,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 09:58:17,180 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 -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2025-02-08 09:58:17,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 09:58:17,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 09:58:17,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 09:58:17,412 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 09:58:17,412 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 09:58:17,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci03.c [2025-02-08 09:58:18,535 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/69ad0070a/53560a6d2bec410ab34edd9fdc162ee0/FLAG85e4f63ef [2025-02-08 09:58:18,732 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 09:58:18,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci03.c [2025-02-08 09:58:18,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/69ad0070a/53560a6d2bec410ab34edd9fdc162ee0/FLAG85e4f63ef [2025-02-08 09:58:19,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/69ad0070a/53560a6d2bec410ab34edd9fdc162ee0 [2025-02-08 09:58:19,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 09:58:19,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 09:58:19,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 09:58:19,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 09:58:19,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 09:58:19,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c29319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19, skipping insertion in model container [2025-02-08 09:58:19,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 09:58:19,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 09:58:19,246 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 09:58:19,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 09:58:19,267 INFO L204 MainTranslator]: Completed translation [2025-02-08 09:58:19,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19 WrapperNode [2025-02-08 09:58:19,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 09:58:19,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 09:58:19,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 09:58:19,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 09:58:19,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,293 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-02-08 09:58:19,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 09:58:19,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 09:58:19,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 09:58:19,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 09:58:19,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,312 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]. [2025-02-08 09:58:19,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,314 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 09:58:19,321 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 09:58:19,321 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 09:58:19,321 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 09:58:19,322 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (1/1) ... [2025-02-08 09:58:19,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 09:58:19,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:19,348 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) [2025-02-08 09:58:19,352 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 [2025-02-08 09:58:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2025-02-08 09:58:19,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2025-02-08 09:58:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 09:58:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 09:58:19,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 09:58:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 09:58:19,414 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 09:58:19,415 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 09:58:19,494 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: havoc #t~ret4;havoc #t~ret5; [2025-02-08 09:58:19,528 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-02-08 09:58:19,528 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 09:58:19,537 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 09:58:19,537 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 09:58:19,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 09:58:19 BoogieIcfgContainer [2025-02-08 09:58:19,538 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 09:58:19,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 09:58:19,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 09:58:19,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 09:58:19,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 09:58:19" (1/3) ... [2025-02-08 09:58:19,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e373dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 09:58:19, skipping insertion in model container [2025-02-08 09:58:19,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:58:19" (2/3) ... [2025-02-08 09:58:19,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e373dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 09:58:19, skipping insertion in model container [2025-02-08 09:58:19,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 09:58:19" (3/3) ... [2025-02-08 09:58:19,548 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2025-02-08 09:58:19,560 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 09:58:19,561 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci03.c that has 2 procedures, 29 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-02-08 09:58:19,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 09:58:19,612 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;@66bcb317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 09:58:19,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 09:58:19,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.588235294117647) internal successors, (27), 24 states have internal predecessors, (27), 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) [2025-02-08 09:58:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 09:58:19,622 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:19,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:58:19,623 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:19,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1918456325, now seen corresponding path program 1 times [2025-02-08 09:58:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:19,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616957623] [2025-02-08 09:58:19,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:19,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 09:58:19,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 09:58:19,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:19,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:58:19,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616957623] [2025-02-08 09:58:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616957623] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:58:19,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:58:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 09:58:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673320778] [2025-02-08 09:58:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:58:19,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 09:58:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:19,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 09:58:19,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 09:58:19,808 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.588235294117647) internal successors, (27), 24 states have internal predecessors, (27), 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) [2025-02-08 09:58:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:19,835 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2025-02-08 09:58:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 09:58:19,837 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 [2025-02-08 09:58:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:19,842 INFO L225 Difference]: With dead ends: 31 [2025-02-08 09:58:19,842 INFO L226 Difference]: Without dead ends: 24 [2025-02-08 09:58:19,844 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 [2025-02-08 09:58:19,846 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 36 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 [2025-02-08 09:58:19,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 36 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:58:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-08 09:58:19,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-02-08 09:58:19,866 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) [2025-02-08 09:58:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-08 09:58:19,870 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-02-08 09:58:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:19,871 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-08 09:58:19,871 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) [2025-02-08 09:58:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-08 09:58:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 09:58:19,872 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:19,872 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:58:19,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 09:58:19,872 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:19,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -657396084, now seen corresponding path program 1 times [2025-02-08 09:58:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196829834] [2025-02-08 09:58:19,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:19,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 09:58:19,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 09:58:19,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:19,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:58:19,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:19,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196829834] [2025-02-08 09:58:19,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196829834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:58:19,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:58:19,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 09:58:19,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347254596] [2025-02-08 09:58:19,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:58:19,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 09:58:19,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:19,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 09:58:19,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 09:58:19,935 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) [2025-02-08 09:58:19,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:19,993 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-02-08 09:58:19,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 09:58:19,994 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 [2025-02-08 09:58:19,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:19,994 INFO L225 Difference]: With dead ends: 24 [2025-02-08 09:58:19,994 INFO L226 Difference]: Without dead ends: 22 [2025-02-08 09:58:19,995 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 [2025-02-08 09:58:19,995 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:19,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 28 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:58:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-08 09:58:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-02-08 09:58:19,999 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) [2025-02-08 09:58:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-02-08 09:58:19,999 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-02-08 09:58:19,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:20,000 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-02-08 09:58:20,000 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) [2025-02-08 09:58:20,000 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-02-08 09:58:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 09:58:20,000 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:20,001 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:58:20,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 09:58:20,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:20,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1219789848, now seen corresponding path program 1 times [2025-02-08 09:58:20,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:20,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947502738] [2025-02-08 09:58:20,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:20,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 09:58:20,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 09:58:20,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:20,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-08 09:58:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947502738] [2025-02-08 09:58:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947502738] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:58:20,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:58:20,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 09:58:20,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856265988] [2025-02-08 09:58:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:58:20,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 09:58:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:20,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 09:58:20,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 09:58:20,154 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) [2025-02-08 09:58:20,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:20,192 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-02-08 09:58:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 09:58:20,192 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 [2025-02-08 09:58:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:20,193 INFO L225 Difference]: With dead ends: 34 [2025-02-08 09:58:20,193 INFO L226 Difference]: Without dead ends: 32 [2025-02-08 09:58:20,193 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 [2025-02-08 09:58:20,194 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 [2025-02-08 09:58:20,194 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] [2025-02-08 09:58:20,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-08 09:58:20,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-02-08 09:58:20,200 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) [2025-02-08 09:58:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-02-08 09:58:20,203 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2025-02-08 09:58:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:20,204 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-02-08 09:58:20,204 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) [2025-02-08 09:58:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-02-08 09:58:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-08 09:58:20,207 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:20,207 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] [2025-02-08 09:58:20,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 09:58:20,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:20,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:20,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2143764894, now seen corresponding path program 1 times [2025-02-08 09:58:20,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605268497] [2025-02-08 09:58:20,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:20,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 09:58:20,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 09:58:20,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:20,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 09:58:20,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605268497] [2025-02-08 09:58:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605268497] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677588344] [2025-02-08 09:58:20,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:20,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:20,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:20,326 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) [2025-02-08 09:58:20,328 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 [2025-02-08 09:58:20,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 09:58:20,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 09:58:20,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:20,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:20,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 09:58:20,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 09:58:20,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 09:58:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677588344] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:20,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:20,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-02-08 09:58:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077112749] [2025-02-08 09:58:20,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:20,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 09:58:20,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:20,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 09:58:20,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-02-08 09:58:20,620 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) [2025-02-08 09:58:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:20,851 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2025-02-08 09:58:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 09:58:20,852 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 [2025-02-08 09:58:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:20,853 INFO L225 Difference]: With dead ends: 90 [2025-02-08 09:58:20,853 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 09:58:20,854 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 [2025-02-08 09:58:20,855 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:20,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 88 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:58:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 09:58:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2025-02-08 09:58:20,862 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) [2025-02-08 09:58:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2025-02-08 09:58:20,863 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2025-02-08 09:58:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:20,863 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2025-02-08 09:58:20,864 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) [2025-02-08 09:58:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2025-02-08 09:58:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-08 09:58:20,864 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:20,864 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:58:20,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 09:58:21,065 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 [2025-02-08 09:58:21,065 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:21,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2098828437, now seen corresponding path program 2 times [2025-02-08 09:58:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:21,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096369194] [2025-02-08 09:58:21,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:58:21,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:21,071 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 09:58:21,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 09:58:21,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:58:21,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-08 09:58:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096369194] [2025-02-08 09:58:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096369194] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071601974] [2025-02-08 09:58:21,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:58:21,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:21,174 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) [2025-02-08 09:58:21,175 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 [2025-02-08 09:58:21,197 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 09:58:21,205 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 09:58:21,205 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:58:21,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:21,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 09:58:21,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-08 09:58:21,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 09:58:21,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071601974] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:58:21,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 09:58:21,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-08 09:58:21,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519818334] [2025-02-08 09:58:21,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:58:21,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 09:58:21,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:21,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 09:58:21,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 09:58:21,248 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) [2025-02-08 09:58:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:21,278 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2025-02-08 09:58:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 09:58:21,279 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 30 [2025-02-08 09:58:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:21,280 INFO L225 Difference]: With dead ends: 59 [2025-02-08 09:58:21,280 INFO L226 Difference]: Without dead ends: 58 [2025-02-08 09:58:21,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 09:58:21,280 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 [2025-02-08 09:58:21,280 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] [2025-02-08 09:58:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-08 09:58:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2025-02-08 09:58:21,286 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) [2025-02-08 09:58:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2025-02-08 09:58:21,287 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 30 [2025-02-08 09:58:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:21,288 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2025-02-08 09:58:21,288 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) [2025-02-08 09:58:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2025-02-08 09:58:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 09:58:21,288 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:21,288 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:58:21,294 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 [2025-02-08 09:58:21,493 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 [2025-02-08 09:58:21,493 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:21,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:21,494 INFO L85 PathProgramCache]: Analyzing trace with hash 639172080, now seen corresponding path program 1 times [2025-02-08 09:58:21,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:21,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114365823] [2025-02-08 09:58:21,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:21,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:21,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 09:58:21,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 09:58:21,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:21,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-08 09:58:21,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114365823] [2025-02-08 09:58:21,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114365823] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438892712] [2025-02-08 09:58:21,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:21,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:21,566 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) [2025-02-08 09:58:21,568 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 [2025-02-08 09:58:21,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 09:58:21,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 09:58:21,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:21,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:21,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 09:58:21,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-08 09:58:21,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 09:58:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438892712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:58:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 09:58:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-02-08 09:58:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993105384] [2025-02-08 09:58:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:58:21,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 09:58:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:21,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 09:58:21,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 09:58:21,653 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) [2025-02-08 09:58:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:21,686 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2025-02-08 09:58:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 09:58:21,686 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 31 [2025-02-08 09:58:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:21,687 INFO L225 Difference]: With dead ends: 81 [2025-02-08 09:58:21,687 INFO L226 Difference]: Without dead ends: 80 [2025-02-08 09:58:21,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 09:58:21,688 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:21,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 53 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:58:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-08 09:58:21,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2025-02-08 09:58:21,705 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) [2025-02-08 09:58:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2025-02-08 09:58:21,708 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2025-02-08 09:58:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:21,708 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2025-02-08 09:58:21,708 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) [2025-02-08 09:58:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2025-02-08 09:58:21,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 09:58:21,709 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:21,709 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 09:58:21,715 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 [2025-02-08 09:58:21,914 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 [2025-02-08 09:58:21,914 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:21,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2024708909, now seen corresponding path program 1 times [2025-02-08 09:58:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523964989] [2025-02-08 09:58:21,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:21,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 09:58:21,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 09:58:21,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:21,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-08 09:58:22,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:22,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523964989] [2025-02-08 09:58:22,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523964989] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:22,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505531943] [2025-02-08 09:58:22,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:22,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:22,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:22,028 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) [2025-02-08 09:58:22,029 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 [2025-02-08 09:58:22,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 09:58:22,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 09:58:22,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:22,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:22,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 09:58:22,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-08 09:58:22,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 09:58:22,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505531943] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:22,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:22,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-02-08 09:58:22,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80032925] [2025-02-08 09:58:22,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:22,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 09:58:22,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:22,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 09:58:22,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-02-08 09:58:22,302 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) [2025-02-08 09:58:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:22,478 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2025-02-08 09:58:22,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 09:58:22,479 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 45 [2025-02-08 09:58:22,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:22,481 INFO L225 Difference]: With dead ends: 140 [2025-02-08 09:58:22,483 INFO L226 Difference]: Without dead ends: 138 [2025-02-08 09:58:22,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2025-02-08 09:58:22,485 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:22,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 155 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:58:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-08 09:58:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2025-02-08 09:58:22,502 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) [2025-02-08 09:58:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2025-02-08 09:58:22,505 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 45 [2025-02-08 09:58:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:22,505 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2025-02-08 09:58:22,505 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) [2025-02-08 09:58:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2025-02-08 09:58:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 09:58:22,507 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:22,507 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 09:58:22,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 09:58:22,713 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 [2025-02-08 09:58:22,713 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:22,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1066317380, now seen corresponding path program 1 times [2025-02-08 09:58:22,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:22,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977517777] [2025-02-08 09:58:22,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:22,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 09:58:22,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 09:58:22,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:22,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 09:58:22,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:22,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977517777] [2025-02-08 09:58:22,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977517777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:22,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246281625] [2025-02-08 09:58:22,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:58:22,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:22,847 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) [2025-02-08 09:58:22,848 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 [2025-02-08 09:58:22,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 09:58:22,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 09:58:22,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:22,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:22,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 09:58:22,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-02-08 09:58:22,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-08 09:58:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246281625] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:23,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 18 [2025-02-08 09:58:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618249618] [2025-02-08 09:58:23,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:23,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 09:58:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:23,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 09:58:23,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-02-08 09:58:23,132 INFO L87 Difference]: Start difference. First operand 97 states and 158 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 7 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2025-02-08 09:58:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:23,618 INFO L93 Difference]: Finished difference Result 256 states and 503 transitions. [2025-02-08 09:58:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 09:58:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 7 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 62 [2025-02-08 09:58:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:23,620 INFO L225 Difference]: With dead ends: 256 [2025-02-08 09:58:23,620 INFO L226 Difference]: Without dead ends: 162 [2025-02-08 09:58:23,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1473, Unknown=0, NotChecked=0, Total=1892 [2025-02-08 09:58:23,626 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 109 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:23,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 72 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:58:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-02-08 09:58:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 102. [2025-02-08 09:58:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 12 states have call successors, (12), 3 states have call predecessors, (12), 10 states have return successors, (75), 19 states have call predecessors, (75), 11 states have call successors, (75) [2025-02-08 09:58:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 170 transitions. [2025-02-08 09:58:23,650 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 170 transitions. Word has length 62 [2025-02-08 09:58:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:23,653 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 170 transitions. [2025-02-08 09:58:23,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 7 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2025-02-08 09:58:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 170 transitions. [2025-02-08 09:58:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-08 09:58:23,658 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:23,658 INFO L218 NwaCegarLoop]: trace histogram [19, 17, 12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 3, 1, 1, 1, 1] [2025-02-08 09:58:23,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 09:58:23,859 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 [2025-02-08 09:58:23,859 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:23,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash -470288028, now seen corresponding path program 2 times [2025-02-08 09:58:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:23,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000921248] [2025-02-08 09:58:23,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:58:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:23,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-02-08 09:58:23,877 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 174 of 174 statements. [2025-02-08 09:58:23,878 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:58:23,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 68 proven. 264 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-02-08 09:58:23,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:23,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000921248] [2025-02-08 09:58:23,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000921248] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:23,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885240695] [2025-02-08 09:58:23,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:58:23,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:23,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:23,972 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) [2025-02-08 09:58:23,973 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 [2025-02-08 09:58:23,999 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-02-08 09:58:24,027 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 174 of 174 statements. [2025-02-08 09:58:24,027 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:58:24,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:24,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 09:58:24,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 582 proven. 167 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2025-02-08 09:58:24,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 97 proven. 419 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2025-02-08 09:58:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885240695] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:24,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 12] total 16 [2025-02-08 09:58:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779459581] [2025-02-08 09:58:24,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:24,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 09:58:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:24,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 09:58:24,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-02-08 09:58:24,492 INFO L87 Difference]: Start difference. First operand 102 states and 170 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 11 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 09:58:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:24,631 INFO L93 Difference]: Finished difference Result 194 states and 337 transitions. [2025-02-08 09:58:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 09:58:24,632 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 11 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) Word has length 174 [2025-02-08 09:58:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:24,633 INFO L225 Difference]: With dead ends: 194 [2025-02-08 09:58:24,633 INFO L226 Difference]: Without dead ends: 95 [2025-02-08 09:58:24,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 335 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2025-02-08 09:58:24,634 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 101 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:24,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 72 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:58:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-02-08 09:58:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2025-02-08 09:58:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (27), 12 states have call predecessors, (27), 7 states have call successors, (27) [2025-02-08 09:58:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2025-02-08 09:58:24,641 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 174 [2025-02-08 09:58:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:24,641 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2025-02-08 09:58:24,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 11 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (18), 6 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 09:58:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2025-02-08 09:58:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-08 09:58:24,642 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:24,643 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1] [2025-02-08 09:58:24,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 09:58:24,847 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 [2025-02-08 09:58:24,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:24,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1802697492, now seen corresponding path program 3 times [2025-02-08 09:58:24,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:24,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340651584] [2025-02-08 09:58:24,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:58:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:24,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 10 equivalence classes. [2025-02-08 09:58:24,862 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 91 of 104 statements. [2025-02-08 09:58:24,862 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 09:58:24,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 85 proven. 143 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-02-08 09:58:25,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340651584] [2025-02-08 09:58:25,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340651584] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626068517] [2025-02-08 09:58:25,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:58:25,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:25,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:25,008 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) [2025-02-08 09:58:25,009 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 [2025-02-08 09:58:25,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 10 equivalence classes. [2025-02-08 09:58:25,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 91 of 104 statements. [2025-02-08 09:58:25,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 09:58:25,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:25,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 09:58:25,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 112 proven. 89 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-02-08 09:58:25,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 112 proven. 92 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-02-08 09:58:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626068517] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:25,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:25,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 16 [2025-02-08 09:58:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895793174] [2025-02-08 09:58:25,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:25,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 09:58:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:25,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 09:58:25,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2025-02-08 09:58:25,371 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 8 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2025-02-08 09:58:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:25,548 INFO L93 Difference]: Finished difference Result 167 states and 239 transitions. [2025-02-08 09:58:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 09:58:25,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 8 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) Word has length 104 [2025-02-08 09:58:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:25,549 INFO L225 Difference]: With dead ends: 167 [2025-02-08 09:58:25,549 INFO L226 Difference]: Without dead ends: 97 [2025-02-08 09:58:25,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 204 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2025-02-08 09:58:25,551 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 106 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:25,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 78 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:58:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-08 09:58:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2025-02-08 09:58:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 64 states have (on average 1.09375) internal successors, (70), 61 states have internal predecessors, (70), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (20), 12 states have call predecessors, (20), 7 states have call successors, (20) [2025-02-08 09:58:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2025-02-08 09:58:25,575 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 104 [2025-02-08 09:58:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:25,576 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2025-02-08 09:58:25,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 8 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2025-02-08 09:58:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2025-02-08 09:58:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-08 09:58:25,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:25,576 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] [2025-02-08 09:58:25,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 09:58:25,777 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 [2025-02-08 09:58:25,777 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:25,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:25,777 INFO L85 PathProgramCache]: Analyzing trace with hash 685125632, now seen corresponding path program 4 times [2025-02-08 09:58:25,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:25,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-02-08 09:58:25,778 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:58:25,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:25,781 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-02-08 09:58:25,784 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 55 of 91 statements. [2025-02-08 09:58:25,784 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 09:58:25,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 96 proven. 48 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-02-08 09:58:25,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-02-08 09:58:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860809661] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586046916] [2025-02-08 09:58:25,868 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:58:25,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:25,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:25,870 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) [2025-02-08 09:58:25,871 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 [2025-02-08 09:58:25,897 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-02-08 09:58:25,907 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 55 of 91 statements. [2025-02-08 09:58:25,907 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 09:58:25,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:25,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 09:58:25,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 142 proven. 37 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-08 09:58:25,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 104 proven. 62 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-08 09:58:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586046916] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:26,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:26,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 16 [2025-02-08 09:58:26,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29176124] [2025-02-08 09:58:26,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:26,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 09:58:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:26,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 09:58:26,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-02-08 09:58:26,306 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-02-08 09:58:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:26,419 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2025-02-08 09:58:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 09:58:26,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 91 [2025-02-08 09:58:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:26,420 INFO L225 Difference]: With dead ends: 141 [2025-02-08 09:58:26,420 INFO L226 Difference]: Without dead ends: 66 [2025-02-08 09:58:26,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2025-02-08 09:58:26,421 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:26,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 80 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:58:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-08 09:58:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2025-02-08 09:58:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 49 states have internal predecessors, (54), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2025-02-08 09:58:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2025-02-08 09:58:26,427 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 91 [2025-02-08 09:58:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:26,428 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2025-02-08 09:58:26,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 9 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-02-08 09:58:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2025-02-08 09:58:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-02-08 09:58:26,429 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:26,429 INFO L218 NwaCegarLoop]: trace histogram [20, 18, 16, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 4, 1, 1, 1, 1] [2025-02-08 09:58:26,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 09:58:26,630 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 [2025-02-08 09:58:26,630 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:26,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash 228525427, now seen corresponding path program 5 times [2025-02-08 09:58:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:26,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348499070] [2025-02-08 09:58:26,631 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:58:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:26,638 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 188 statements into 15 equivalence classes. [2025-02-08 09:58:26,656 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 147 of 188 statements. [2025-02-08 09:58:26,656 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-08 09:58:26,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 308 proven. 362 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2025-02-08 09:58:26,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348499070] [2025-02-08 09:58:26,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348499070] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344757915] [2025-02-08 09:58:26,904 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:58:26,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:26,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:26,906 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) [2025-02-08 09:58:26,907 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 [2025-02-08 09:58:26,941 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 188 statements into 15 equivalence classes. [2025-02-08 09:58:26,966 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 147 of 188 statements. [2025-02-08 09:58:26,967 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-08 09:58:26,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:26,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 09:58:26,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 287 proven. 345 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-02-08 09:58:27,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 291 proven. 357 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2025-02-08 09:58:27,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344757915] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:27,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:27,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 21 [2025-02-08 09:58:27,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442142527] [2025-02-08 09:58:27,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:27,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 09:58:27,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:27,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 09:58:27,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2025-02-08 09:58:27,643 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 12 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (22), 13 states have call predecessors, (22), 12 states have call successors, (22) [2025-02-08 09:58:27,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:27,941 INFO L93 Difference]: Finished difference Result 151 states and 179 transitions. [2025-02-08 09:58:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 09:58:27,942 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 12 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (22), 13 states have call predecessors, (22), 12 states have call successors, (22) Word has length 188 [2025-02-08 09:58:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:27,943 INFO L225 Difference]: With dead ends: 151 [2025-02-08 09:58:27,943 INFO L226 Difference]: Without dead ends: 92 [2025-02-08 09:58:27,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 367 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=350, Invalid=910, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 09:58:27,944 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 168 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:27,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 117 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:58:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-02-08 09:58:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2025-02-08 09:58:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 61 states have internal predecessors, (67), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2025-02-08 09:58:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2025-02-08 09:58:27,950 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 188 [2025-02-08 09:58:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:27,950 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2025-02-08 09:58:27,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 12 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (22), 13 states have call predecessors, (22), 12 states have call successors, (22) [2025-02-08 09:58:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2025-02-08 09:58:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-08 09:58:27,951 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:27,951 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1] [2025-02-08 09:58:27,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 09:58:28,151 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 [2025-02-08 09:58:28,152 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:28,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 163364678, now seen corresponding path program 6 times [2025-02-08 09:58:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:28,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717750637] [2025-02-08 09:58:28,153 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:58:28,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:28,157 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 129 statements into 9 equivalence classes. [2025-02-08 09:58:28,168 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 129 of 129 statements. [2025-02-08 09:58:28,168 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-08 09:58:28,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 183 proven. 132 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2025-02-08 09:58:28,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:28,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717750637] [2025-02-08 09:58:28,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717750637] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:28,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739129655] [2025-02-08 09:58:28,281 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:58:28,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:28,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:28,283 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) [2025-02-08 09:58:28,285 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 [2025-02-08 09:58:28,314 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 129 statements into 9 equivalence classes. [2025-02-08 09:58:28,337 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 129 of 129 statements. [2025-02-08 09:58:28,337 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-08 09:58:28,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:28,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 09:58:28,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 61 proven. 95 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2025-02-08 09:58:28,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 103 proven. 95 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2025-02-08 09:58:29,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739129655] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:29,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:29,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 33 [2025-02-08 09:58:29,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762759910] [2025-02-08 09:58:29,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:29,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-08 09:58:29,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:29,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-08 09:58:29,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 09:58:29,305 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) [2025-02-08 09:58:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:29,848 INFO L93 Difference]: Finished difference Result 202 states and 264 transitions. [2025-02-08 09:58:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 09:58:29,849 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) Word has length 129 [2025-02-08 09:58:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:29,851 INFO L225 Difference]: With dead ends: 202 [2025-02-08 09:58:29,851 INFO L226 Difference]: Without dead ends: 122 [2025-02-08 09:58:29,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 229 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=501, Invalid=2469, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 09:58:29,854 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:29,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 148 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 09:58:29,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-02-08 09:58:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2025-02-08 09:58:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 77 states have (on average 1.051948051948052) internal successors, (81), 76 states have internal predecessors, (81), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2025-02-08 09:58:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 119 transitions. [2025-02-08 09:58:29,865 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 119 transitions. Word has length 129 [2025-02-08 09:58:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:29,865 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 119 transitions. [2025-02-08 09:58:29,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) [2025-02-08 09:58:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 119 transitions. [2025-02-08 09:58:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2025-02-08 09:58:29,872 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:29,872 INFO L218 NwaCegarLoop]: trace histogram [49, 45, 40, 25, 25, 25, 25, 23, 23, 23, 23, 23, 22, 22, 22, 21, 15, 9, 1, 1, 1, 1] [2025-02-08 09:58:29,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 09:58:30,073 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 [2025-02-08 09:58:30,073 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:30,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:30,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1387917156, now seen corresponding path program 7 times [2025-02-08 09:58:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:30,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040772647] [2025-02-08 09:58:30,074 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:58:30,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:30,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 464 statements into 1 equivalence classes. [2025-02-08 09:58:30,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 464 of 464 statements. [2025-02-08 09:58:30,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:30,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 593 proven. 1908 refuted. 0 times theorem prover too weak. 5216 trivial. 0 not checked. [2025-02-08 09:58:30,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:30,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040772647] [2025-02-08 09:58:30,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040772647] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:30,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848976432] [2025-02-08 09:58:30,537 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:58:30,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:30,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:30,540 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) [2025-02-08 09:58:30,542 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 [2025-02-08 09:58:30,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 464 statements into 1 equivalence classes. [2025-02-08 09:58:30,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 464 of 464 statements. [2025-02-08 09:58:30,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:58:30,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:30,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 09:58:30,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 4011 proven. 1274 refuted. 0 times theorem prover too weak. 2432 trivial. 0 not checked. [2025-02-08 09:58:30,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 684 proven. 2447 refuted. 0 times theorem prover too weak. 4586 trivial. 0 not checked. [2025-02-08 09:58:31,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848976432] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:31,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:31,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 21] total 26 [2025-02-08 09:58:31,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515606297] [2025-02-08 09:58:31,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:31,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 09:58:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:31,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 09:58:31,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2025-02-08 09:58:31,789 INFO L87 Difference]: Start difference. First operand 97 states and 119 transitions. Second operand has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 26 states have internal predecessors, (155), 21 states have call successors, (28), 4 states have call predecessors, (28), 10 states have return successors, (31), 12 states have call predecessors, (31), 19 states have call successors, (31) [2025-02-08 09:58:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:32,079 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2025-02-08 09:58:32,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 09:58:32,079 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 26 states have internal predecessors, (155), 21 states have call successors, (28), 4 states have call predecessors, (28), 10 states have return successors, (31), 12 states have call predecessors, (31), 19 states have call successors, (31) Word has length 464 [2025-02-08 09:58:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:32,081 INFO L225 Difference]: With dead ends: 232 [2025-02-08 09:58:32,081 INFO L226 Difference]: Without dead ends: 140 [2025-02-08 09:58:32,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 913 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=568, Invalid=1502, Unknown=0, NotChecked=0, Total=2070 [2025-02-08 09:58:32,082 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 306 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:32,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 111 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:58:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-02-08 09:58:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 118. [2025-02-08 09:58:32,089 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) [2025-02-08 09:58:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2025-02-08 09:58:32,090 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 464 [2025-02-08 09:58:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:32,090 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2025-02-08 09:58:32,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 26 states have internal predecessors, (155), 21 states have call successors, (28), 4 states have call predecessors, (28), 10 states have return successors, (31), 12 states have call predecessors, (31), 19 states have call successors, (31) [2025-02-08 09:58:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2025-02-08 09:58:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-08 09:58:32,095 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:32,095 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1] [2025-02-08 09:58:32,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 09:58:32,295 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 [2025-02-08 09:58:32,296 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:32,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash -131949088, now seen corresponding path program 8 times [2025-02-08 09:58:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:32,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676354306] [2025-02-08 09:58:32,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:58:32,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:32,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 300 statements into 2 equivalence classes. [2025-02-08 09:58:32,329 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 300 of 300 statements. [2025-02-08 09:58:32,329 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:58:32,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 522 proven. 990 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2025-02-08 09:58:32,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676354306] [2025-02-08 09:58:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676354306] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184514898] [2025-02-08 09:58:32,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:58:32,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:32,587 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) [2025-02-08 09:58:32,589 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 [2025-02-08 09:58:32,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 300 statements into 2 equivalence classes. [2025-02-08 09:58:32,681 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 300 of 300 statements. [2025-02-08 09:58:32,682 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:58:32,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:32,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 09:58:32,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1787 proven. 484 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2025-02-08 09:58:32,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 517 proven. 1101 refuted. 0 times theorem prover too weak. 1532 trivial. 0 not checked. [2025-02-08 09:58:33,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184514898] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:33,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:33,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2025-02-08 09:58:33,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530771609] [2025-02-08 09:58:33,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:33,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 09:58:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:33,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 09:58:33,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2025-02-08 09:58:33,781 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2025-02-08 09:58:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:34,023 INFO L93 Difference]: Finished difference Result 231 states and 299 transitions. [2025-02-08 09:58:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 09:58:34,023 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), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) Word has length 300 [2025-02-08 09:58:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:34,025 INFO L225 Difference]: With dead ends: 231 [2025-02-08 09:58:34,025 INFO L226 Difference]: Without dead ends: 118 [2025-02-08 09:58:34,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 587 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 09:58:34,026 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 97 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:34,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 162 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:58:34,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-02-08 09:58:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2025-02-08 09:58:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.035294117647059) internal successors, (88), 83 states have internal predecessors, (88), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2025-02-08 09:58:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2025-02-08 09:58:34,032 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 300 [2025-02-08 09:58:34,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:34,033 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2025-02-08 09:58:34,033 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), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2025-02-08 09:58:34,033 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2025-02-08 09:58:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2025-02-08 09:58:34,035 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:34,035 INFO L218 NwaCegarLoop]: trace histogram [52, 50, 42, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 24, 16, 10, 1, 1, 1, 1] [2025-02-08 09:58:34,043 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 [2025-02-08 09:58:34,235 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 [2025-02-08 09:58:34,236 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:34,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2004205517, now seen corresponding path program 9 times [2025-02-08 09:58:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:34,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180250949] [2025-02-08 09:58:34,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:58:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:34,247 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 502 statements into 35 equivalence classes. [2025-02-08 09:58:34,285 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 371 of 502 statements. [2025-02-08 09:58:34,285 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-02-08 09:58:34,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1771 proven. 1024 refuted. 0 times theorem prover too weak. 6243 trivial. 0 not checked. [2025-02-08 09:58:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180250949] [2025-02-08 09:58:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180250949] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121215548] [2025-02-08 09:58:34,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:58:34,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:34,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:34,536 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) [2025-02-08 09:58:34,538 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 [2025-02-08 09:58:34,605 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 502 statements into 35 equivalence classes. [2025-02-08 09:58:34,681 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 371 of 502 statements. [2025-02-08 09:58:34,681 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-02-08 09:58:34,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:34,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 09:58:34,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1771 proven. 1024 refuted. 0 times theorem prover too weak. 6243 trivial. 0 not checked. [2025-02-08 09:58:34,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1779 proven. 1063 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2025-02-08 09:58:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121215548] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:35,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:35,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 21 [2025-02-08 09:58:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138545271] [2025-02-08 09:58:35,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:35,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 09:58:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:35,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 09:58:35,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2025-02-08 09:58:35,769 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 12 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (24), 15 states have call predecessors, (24), 12 states have call successors, (24) [2025-02-08 09:58:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:36,129 INFO L93 Difference]: Finished difference Result 297 states and 378 transitions. [2025-02-08 09:58:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-08 09:58:36,129 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 12 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (24), 15 states have call predecessors, (24), 12 states have call successors, (24) Word has length 502 [2025-02-08 09:58:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:36,140 INFO L225 Difference]: With dead ends: 297 [2025-02-08 09:58:36,140 INFO L226 Difference]: Without dead ends: 170 [2025-02-08 09:58:36,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 996 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 09:58:36,142 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 234 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:36,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 126 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:58:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-02-08 09:58:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2025-02-08 09:58:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 107 states have internal predecessors, (115), 17 states have call successors, (17), 14 states have call predecessors, (17), 8 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2025-02-08 09:58:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2025-02-08 09:58:36,152 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 502 [2025-02-08 09:58:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:36,153 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2025-02-08 09:58:36,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 12 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (24), 15 states have call predecessors, (24), 12 states have call successors, (24) [2025-02-08 09:58:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2025-02-08 09:58:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-02-08 09:58:36,155 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:36,155 INFO L218 NwaCegarLoop]: trace histogram [36, 34, 29, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 11, 7, 1, 1, 1, 1] [2025-02-08 09:58:36,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 09:58:36,355 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 [2025-02-08 09:58:36,356 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:36,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1319704886, now seen corresponding path program 10 times [2025-02-08 09:58:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:36,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592053777] [2025-02-08 09:58:36,356 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:58:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:36,363 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 345 statements into 2 equivalence classes. [2025-02-08 09:58:36,372 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 205 of 345 statements. [2025-02-08 09:58:36,372 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 09:58:36,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 780 proven. 1095 refuted. 0 times theorem prover too weak. 2324 trivial. 0 not checked. [2025-02-08 09:58:36,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592053777] [2025-02-08 09:58:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592053777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635514665] [2025-02-08 09:58:36,579 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:58:36,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:36,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:36,581 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) [2025-02-08 09:58:36,583 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 [2025-02-08 09:58:36,650 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 345 statements into 2 equivalence classes. [2025-02-08 09:58:36,681 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 205 of 345 statements. [2025-02-08 09:58:36,681 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 09:58:36,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:36,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 09:58:36,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 900 proven. 1214 refuted. 0 times theorem prover too weak. 2085 trivial. 0 not checked. [2025-02-08 09:58:36,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 900 proven. 1290 refuted. 0 times theorem prover too weak. 2009 trivial. 0 not checked. [2025-02-08 09:58:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635514665] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:37,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2025-02-08 09:58:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438812897] [2025-02-08 09:58:37,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:37,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 09:58:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:37,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 09:58:37,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2025-02-08 09:58:37,989 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) [2025-02-08 09:58:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:38,245 INFO L93 Difference]: Finished difference Result 285 states and 373 transitions. [2025-02-08 09:58:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 09:58:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) Word has length 345 [2025-02-08 09:58:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:38,247 INFO L225 Difference]: With dead ends: 285 [2025-02-08 09:58:38,247 INFO L226 Difference]: Without dead ends: 154 [2025-02-08 09:58:38,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 673 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=480, Invalid=1326, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 09:58:38,249 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 130 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:38,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 210 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:58:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-02-08 09:58:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 145. [2025-02-08 09:58:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 115 states have internal predecessors, (121), 19 states have call successors, (19), 16 states have call predecessors, (19), 8 states have return successors, (38), 13 states have call predecessors, (38), 18 states have call successors, (38) [2025-02-08 09:58:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2025-02-08 09:58:38,258 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 345 [2025-02-08 09:58:38,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:38,259 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2025-02-08 09:58:38,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) [2025-02-08 09:58:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2025-02-08 09:58:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2025-02-08 09:58:38,261 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:38,262 INFO L218 NwaCegarLoop]: trace histogram [42, 40, 34, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2025-02-08 09:58:38,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 09:58:38,462 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 [2025-02-08 09:58:38,462 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:38,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:38,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1664869117, now seen corresponding path program 11 times [2025-02-08 09:58:38,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:38,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210663929] [2025-02-08 09:58:38,463 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:58:38,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:38,471 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 404 statements into 30 equivalence classes. [2025-02-08 09:58:38,504 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) and asserted 404 of 404 statements. [2025-02-08 09:58:38,504 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2025-02-08 09:58:38,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 908 proven. 1489 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2025-02-08 09:58:40,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:40,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210663929] [2025-02-08 09:58:40,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210663929] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:40,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398734815] [2025-02-08 09:58:40,488 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:58:40,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:40,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:40,490 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) [2025-02-08 09:58:40,491 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 [2025-02-08 09:58:40,567 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 404 statements into 30 equivalence classes. [2025-02-08 09:58:40,637 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) and asserted 404 of 404 statements. [2025-02-08 09:58:40,638 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2025-02-08 09:58:40,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:40,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-08 09:58:40,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2025-02-08 09:58:40,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:58:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2025-02-08 09:58:45,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398734815] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:58:45,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:58:45,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 29] total 47 [2025-02-08 09:58:45,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229103081] [2025-02-08 09:58:45,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:58:45,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-08 09:58:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:58:45,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-08 09:58:45,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2025-02-08 09:58:45,665 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2025-02-08 09:58:45,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:58:45,822 INFO L93 Difference]: Finished difference Result 176 states and 232 transitions. [2025-02-08 09:58:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 09:58:45,823 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) Word has length 404 [2025-02-08 09:58:45,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:58:45,824 INFO L225 Difference]: With dead ends: 176 [2025-02-08 09:58:45,824 INFO L226 Difference]: Without dead ends: 175 [2025-02-08 09:58:45,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 786 SyntacticMatches, 55 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2634 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=613, Invalid=2039, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 09:58:45,825 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:58:45,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 221 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:58:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-02-08 09:58:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2025-02-08 09:58:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 134 states have (on average 1.0298507462686568) internal successors, (138), 131 states have internal predecessors, (138), 21 states have call successors, (21), 16 states have call predecessors, (21), 10 states have return successors, (58), 18 states have call predecessors, (58), 20 states have call successors, (58) [2025-02-08 09:58:45,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2025-02-08 09:58:45,834 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 404 [2025-02-08 09:58:45,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:58:45,835 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2025-02-08 09:58:45,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2025-02-08 09:58:45,835 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2025-02-08 09:58:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2025-02-08 09:58:45,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:58:45,839 INFO L218 NwaCegarLoop]: trace histogram [83, 82, 67, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1] [2025-02-08 09:58:45,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 09:58:46,039 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 [2025-02-08 09:58:46,040 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:58:46,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:58:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1799641850, now seen corresponding path program 12 times [2025-02-08 09:58:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:58:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131702598] [2025-02-08 09:58:46,040 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:58:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:58:46,054 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 810 statements into 64 equivalence classes. [2025-02-08 09:58:46,140 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) and asserted 774 of 810 statements. [2025-02-08 09:58:46,140 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2025-02-08 09:58:46,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4168 proven. 5850 refuted. 0 times theorem prover too weak. 13841 trivial. 0 not checked. [2025-02-08 09:58:53,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:58:53,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131702598] [2025-02-08 09:58:53,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131702598] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:58:53,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298194683] [2025-02-08 09:58:53,523 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:58:53,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:58:53,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:58:53,524 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) [2025-02-08 09:58:53,526 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 [2025-02-08 09:58:53,676 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 810 statements into 64 equivalence classes. [2025-02-08 09:58:53,846 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) and asserted 774 of 810 statements. [2025-02-08 09:58:53,846 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2025-02-08 09:58:53,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:58:53,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 165 conjuncts are in the unsatisfiable core [2025-02-08 09:58:53,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:58:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 3732 proven. 4596 refuted. 0 times theorem prover too weak. 15531 trivial. 0 not checked. [2025-02-08 09:58:54,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:59:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4599 proven. 4261 refuted. 0 times theorem prover too weak. 14999 trivial. 0 not checked. [2025-02-08 09:59:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298194683] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:59:11,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:59:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21, 38] total 53 [2025-02-08 09:59:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976321267] [2025-02-08 09:59:11,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:59:11,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-08 09:59:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:59:11,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-08 09:59:11,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2025-02-08 09:59:11,322 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand has 54 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 54 states have internal predecessors, (138), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2025-02-08 09:59:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:59:11,532 INFO L93 Difference]: Finished difference Result 224 states and 328 transitions. [2025-02-08 09:59:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 09:59:11,533 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 54 states have internal predecessors, (138), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) Word has length 810 [2025-02-08 09:59:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:59:11,535 INFO L225 Difference]: With dead ends: 224 [2025-02-08 09:59:11,535 INFO L226 Difference]: Without dead ends: 223 [2025-02-08 09:59:11,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1791 GetRequests, 1588 SyntacticMatches, 143 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=827, Invalid=2955, Unknown=0, NotChecked=0, Total=3782 [2025-02-08 09:59:11,536 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:59:11,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 229 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:59:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-02-08 09:59:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 184. [2025-02-08 09:59:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 148 states have (on average 1.027027027027027) internal successors, (152), 145 states have internal predecessors, (152), 23 states have call successors, (23), 16 states have call predecessors, (23), 12 states have return successors, (86), 22 states have call predecessors, (86), 22 states have call successors, (86) [2025-02-08 09:59:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 261 transitions. [2025-02-08 09:59:11,547 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 261 transitions. Word has length 810 [2025-02-08 09:59:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:59:11,548 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 261 transitions. [2025-02-08 09:59:11,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 54 states have internal predecessors, (138), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2025-02-08 09:59:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 261 transitions. [2025-02-08 09:59:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1799 [2025-02-08 09:59:11,560 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:59:11,561 INFO L218 NwaCegarLoop]: trace histogram [185, 181, 150, 93, 93, 93, 93, 91, 91, 91, 91, 91, 90, 90, 90, 89, 57, 35, 1, 1, 1, 1] [2025-02-08 09:59:11,569 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 [2025-02-08 09:59:11,765 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 [2025-02-08 09:59:11,765 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:59:11,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:59:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1510182070, now seen corresponding path program 13 times [2025-02-08 09:59:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:59:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973316933] [2025-02-08 09:59:11,766 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:59:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:59:11,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1798 statements into 1 equivalence classes. [2025-02-08 09:59:11,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1798 of 1798 statements. [2025-02-08 09:59:11,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:59:11,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 119024 backedges. 2418 proven. 14377 refuted. 0 times theorem prover too weak. 102229 trivial. 0 not checked. [2025-02-08 09:59:14,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:59:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973316933] [2025-02-08 09:59:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973316933] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:59:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724627851] [2025-02-08 09:59:14,691 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:59:14,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:59:14,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:59:14,693 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) [2025-02-08 09:59:14,694 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 [2025-02-08 09:59:15,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1798 statements into 1 equivalence classes. [2025-02-08 09:59:15,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1798 of 1798 statements. [2025-02-08 09:59:15,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:59:15,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:15,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 3341 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 09:59:15,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:59:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 119024 backedges. 62023 proven. 5564 refuted. 0 times theorem prover too weak. 51437 trivial. 0 not checked. [2025-02-08 09:59:15,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:59:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 119024 backedges. 2922 proven. 16841 refuted. 0 times theorem prover too weak. 99261 trivial. 0 not checked. [2025-02-08 09:59:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724627851] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:59:18,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:59:18,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 29] total 34 [2025-02-08 09:59:18,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388173871] [2025-02-08 09:59:18,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:59:18,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-08 09:59:18,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:59:18,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-08 09:59:18,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 09:59:18,341 INFO L87 Difference]: Start difference. First operand 184 states and 261 transitions. Second operand has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2025-02-08 09:59:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:59:18,809 INFO L93 Difference]: Finished difference Result 445 states and 723 transitions. [2025-02-08 09:59:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-08 09:59:18,810 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) Word has length 1798 [2025-02-08 09:59:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:59:18,812 INFO L225 Difference]: With dead ends: 445 [2025-02-08 09:59:18,812 INFO L226 Difference]: Without dead ends: 266 [2025-02-08 09:59:18,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3661 GetRequests, 3577 SyntacticMatches, 17 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1170, Invalid=3522, Unknown=0, NotChecked=0, Total=4692 [2025-02-08 09:59:18,815 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 548 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:59:18,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 192 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:59:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-02-08 09:59:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 220. [2025-02-08 09:59:18,835 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) [2025-02-08 09:59:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 317 transitions. [2025-02-08 09:59:18,837 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 317 transitions. Word has length 1798 [2025-02-08 09:59:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:59:18,838 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 317 transitions. [2025-02-08 09:59:18,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2025-02-08 09:59:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 317 transitions. [2025-02-08 09:59:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3448 [2025-02-08 09:59:18,879 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:59:18,879 INFO L218 NwaCegarLoop]: trace histogram [354, 348, 287, 178, 178, 178, 178, 175, 175, 175, 175, 175, 173, 173, 173, 172, 109, 67, 1, 1, 1, 1] [2025-02-08 09:59:18,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 09:59:19,080 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 [2025-02-08 09:59:19,080 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:59:19,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:59:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash 382022776, now seen corresponding path program 14 times [2025-02-08 09:59:19,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:59:19,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464070518] [2025-02-08 09:59:19,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:59:19,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:59:19,124 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3447 statements into 2 equivalence classes. [2025-02-08 09:59:19,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 3447 of 3447 statements. [2025-02-08 09:59:19,356 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:59:19,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 439552 backedges. 6498 proven. 33087 refuted. 0 times theorem prover too weak. 399967 trivial. 0 not checked. [2025-02-08 09:59:30,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:59:30,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464070518] [2025-02-08 09:59:30,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464070518] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:59:30,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484021525] [2025-02-08 09:59:30,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:59:30,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:59:30,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:59:30,448 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) [2025-02-08 09:59:30,448 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 [2025-02-08 09:59:30,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3447 statements into 2 equivalence classes. [2025-02-08 09:59:31,295 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 3447 of 3447 statements. [2025-02-08 09:59:31,295 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:59:31,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:31,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 6386 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 09:59:31,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:59:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 439552 backedges. 225635 proven. 14029 refuted. 0 times theorem prover too weak. 199888 trivial. 0 not checked. [2025-02-08 09:59:31,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:59:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 439552 backedges. 7490 proven. 37999 refuted. 0 times theorem prover too weak. 394063 trivial. 0 not checked. [2025-02-08 09:59:36,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484021525] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:59:36,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:59:36,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 32] total 37 [2025-02-08 09:59:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185056657] [2025-02-08 09:59:36,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:59:36,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-08 09:59:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:59:36,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-08 09:59:36,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 09:59:36,697 INFO L87 Difference]: Start difference. First operand 220 states and 317 transitions. Second operand has 37 states, 37 states have (on average 5.945945945945946) internal successors, (220), 37 states have internal predecessors, (220), 32 states have call successors, (40), 5 states have call predecessors, (40), 15 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) [2025-02-08 09:59:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:59:37,364 INFO L93 Difference]: Finished difference Result 512 states and 815 transitions. [2025-02-08 09:59:37,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-08 09:59:37,365 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.945945945945946) internal successors, (220), 37 states have internal predecessors, (220), 32 states have call successors, (40), 5 states have call predecessors, (40), 15 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) Word has length 3447 [2025-02-08 09:59:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:59:37,368 INFO L225 Difference]: With dead ends: 512 [2025-02-08 09:59:37,368 INFO L226 Difference]: Without dead ends: 297 [2025-02-08 09:59:37,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6971 GetRequests, 6874 SyntacticMatches, 20 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1530, Invalid=4632, Unknown=0, NotChecked=0, Total=6162 [2025-02-08 09:59:37,373 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 533 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:59:37,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 211 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:59:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2025-02-08 09:59:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 259. [2025-02-08 09:59:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 210 states have (on average 1.0333333333333334) internal successors, (217), 204 states have internal predecessors, (217), 32 states have call successors, (32), 22 states have call predecessors, (32), 16 states have return successors, (114), 32 states have call predecessors, (114), 31 states have call successors, (114) [2025-02-08 09:59:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 363 transitions. [2025-02-08 09:59:37,399 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 363 transitions. Word has length 3447 [2025-02-08 09:59:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:59:37,402 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 363 transitions. [2025-02-08 09:59:37,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.945945945945946) internal successors, (220), 37 states have internal predecessors, (220), 32 states have call successors, (40), 5 states have call predecessors, (40), 15 states have return successors, (47), 17 states have call predecessors, (47), 29 states have call successors, (47) [2025-02-08 09:59:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 363 transitions. [2025-02-08 09:59:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2025-02-08 09:59:37,409 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:59:37,410 INFO L218 NwaCegarLoop]: trace histogram [116, 114, 94, 58, 58, 58, 58, 57, 57, 57, 57, 57, 57, 57, 57, 56, 36, 22, 1, 1, 1, 1] [2025-02-08 09:59:37,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 09:59:37,610 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 [2025-02-08 09:59:37,610 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:59:37,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:59:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash -624691871, now seen corresponding path program 15 times [2025-02-08 09:59:37,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:59:37,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871928489] [2025-02-08 09:59:37,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:59:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:59:37,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1130 statements into 84 equivalence classes. [2025-02-08 09:59:37,654 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) and asserted 448 of 1130 statements. [2025-02-08 09:59:37,654 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2025-02-08 09:59:37,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 46724 backedges. 5771 proven. 1116 refuted. 0 times theorem prover too weak. 39837 trivial. 0 not checked. [2025-02-08 09:59:37,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:59:37,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871928489] [2025-02-08 09:59:37,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871928489] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:59:37,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530617555] [2025-02-08 09:59:37,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:59:37,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:59:37,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:59:37,966 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) [2025-02-08 09:59:37,967 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 [2025-02-08 09:59:38,314 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1130 statements into 84 equivalence classes. [2025-02-08 09:59:38,386 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) and asserted 448 of 1130 statements. [2025-02-08 09:59:38,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2025-02-08 09:59:38,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:38,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 09:59:38,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:59:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 46724 backedges. 5765 proven. 1110 refuted. 0 times theorem prover too weak. 39849 trivial. 0 not checked. [2025-02-08 09:59:38,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:59:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 46724 backedges. 5765 proven. 1173 refuted. 0 times theorem prover too weak. 39786 trivial. 0 not checked. [2025-02-08 09:59:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530617555] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:59:40,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:59:40,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 26 [2025-02-08 09:59:40,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991904863] [2025-02-08 09:59:40,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:59:40,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 09:59:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:59:40,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 09:59:40,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2025-02-08 09:59:40,141 INFO L87 Difference]: Start difference. First operand 259 states and 363 transitions. Second operand has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 12 states have call successors, (21), 1 states have call predecessors, (21), 11 states have return successors, (27), 18 states have call predecessors, (27), 12 states have call successors, (27) [2025-02-08 09:59:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:59:40,412 INFO L93 Difference]: Finished difference Result 504 states and 713 transitions. [2025-02-08 09:59:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 09:59:40,414 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 12 states have call successors, (21), 1 states have call predecessors, (21), 11 states have return successors, (27), 18 states have call predecessors, (27), 12 states have call successors, (27) Word has length 1130 [2025-02-08 09:59:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:59:40,416 INFO L225 Difference]: With dead ends: 504 [2025-02-08 09:59:40,416 INFO L226 Difference]: Without dead ends: 230 [2025-02-08 09:59:40,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2293 GetRequests, 2247 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 09:59:40,419 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 121 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:59:40,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 175 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:59:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-02-08 09:59:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 199. [2025-02-08 09:59:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 158 states have internal predecessors, (167), 26 states have call successors, (26), 22 states have call predecessors, (26), 10 states have return successors, (47), 18 states have call predecessors, (47), 25 states have call successors, (47) [2025-02-08 09:59:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 240 transitions. [2025-02-08 09:59:40,429 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 240 transitions. Word has length 1130 [2025-02-08 09:59:40,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:59:40,430 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 240 transitions. [2025-02-08 09:59:40,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 12 states have call successors, (21), 1 states have call predecessors, (21), 11 states have return successors, (27), 18 states have call predecessors, (27), 12 states have call successors, (27) [2025-02-08 09:59:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 240 transitions. [2025-02-08 09:59:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2819 [2025-02-08 09:59:40,460 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:59:40,461 INFO L218 NwaCegarLoop]: trace histogram [289, 285, 234, 145, 145, 145, 145, 143, 143, 143, 143, 143, 142, 142, 142, 141, 89, 55, 1, 1, 1, 1] [2025-02-08 09:59:40,470 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 [2025-02-08 09:59:40,661 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 [2025-02-08 09:59:40,662 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:59:40,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:59:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1036832506, now seen corresponding path program 16 times [2025-02-08 09:59:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:59:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023762987] [2025-02-08 09:59:40,662 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:59:40,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:59:40,699 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 2818 statements into 2 equivalence classes. [2025-02-08 09:59:40,863 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1671 of 2818 statements. [2025-02-08 09:59:40,863 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 09:59:40,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 293398 backedges. 8004 proven. 27028 refuted. 0 times theorem prover too weak. 258366 trivial. 0 not checked. [2025-02-08 09:59:44,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:59:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023762987] [2025-02-08 09:59:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023762987] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:59:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090946491] [2025-02-08 09:59:44,433 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:59:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:59:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:59:44,435 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) [2025-02-08 09:59:44,436 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 [2025-02-08 09:59:44,839 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 2818 statements into 2 equivalence classes. [2025-02-08 09:59:45,045 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1671 of 2818 statements. [2025-02-08 09:59:45,045 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 09:59:45,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:59:45,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 3491 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 09:59:45,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:59:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 293398 backedges. 114371 proven. 20414 refuted. 0 times theorem prover too weak. 158613 trivial. 0 not checked. [2025-02-08 09:59:45,293 INFO L312 TraceCheckSpWp]: Computing backward predicates...