./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-numeric/Fibonacci01-2-overflow.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 694713b32fd9c1719d4a8995f33c66cfa1f4ebdac7358c65fcc55ce37970cfaf --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:59:51,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:59:51,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-02-08 08:59:51,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:59:51,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:59:51,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:59:51,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:59:51,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:59:51,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:59:51,569 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:59:51,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:59:51,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:59:51,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:59:51,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:59:51,570 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:59:51,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:59:51,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:59:51,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:59:51,571 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 694713b32fd9c1719d4a8995f33c66cfa1f4ebdac7358c65fcc55ce37970cfaf [2025-02-08 08:59:51,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:59:51,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:59:51,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:59:51,777 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:59:51,777 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:59:51,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c [2025-02-08 08:59:52,924 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7adcee26/b3d6d14b7e3d4f07a73c3e0a022c118a/FLAGf4e471135 [2025-02-08 08:59:53,113 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:59:53,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c [2025-02-08 08:59:53,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7adcee26/b3d6d14b7e3d4f07a73c3e0a022c118a/FLAGf4e471135 [2025-02-08 08:59:53,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7adcee26/b3d6d14b7e3d4f07a73c3e0a022c118a [2025-02-08 08:59:53,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:59:53,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:59:53,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:59:53,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:59:53,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:59:53,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3870975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53, skipping insertion in model container [2025-02-08 08:59:53,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:59:53,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:59:53,281 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:59:53,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:59:53,299 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:59:53,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53 WrapperNode [2025-02-08 08:59:53,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:59:53,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:59:53,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:59:53,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:59:53,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,317 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-02-08 08:59:53,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:59:53,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:59:53,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:59:53,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:59:53,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,333 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 08:59:53,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,335 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:59:53,339 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:59:53,339 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:59:53,339 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:59:53,339 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (1/1) ... [2025-02-08 08:59:53,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:59:53,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:53,373 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 08:59:53,378 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 08:59:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2025-02-08 08:59:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2025-02-08 08:59:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:59:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:59:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:59:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:59:53,431 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:59:53,433 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:59:53,522 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: havoc #t~ret4;havoc #t~ret5; [2025-02-08 08:59:53,558 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-02-08 08:59:53,558 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:59:53,564 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:59:53,564 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:59:53,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:59:53 BoogieIcfgContainer [2025-02-08 08:59:53,565 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:59:53,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:59:53,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:59:53,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:59:53,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:59:53" (1/3) ... [2025-02-08 08:59:53,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111f6734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:59:53, skipping insertion in model container [2025-02-08 08:59:53,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:59:53" (2/3) ... [2025-02-08 08:59:53,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111f6734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:59:53, skipping insertion in model container [2025-02-08 08:59:53,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:59:53" (3/3) ... [2025-02-08 08:59:53,571 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci01-2-overflow.c [2025-02-08 08:59:53,581 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:59:53,582 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci01-2-overflow.c that has 2 procedures, 29 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-02-08 08:59:53,620 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:59:53,627 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;@22d29382, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:59:53,628 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 08:59:53,630 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 08:59:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 08:59:53,634 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:53,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:59:53,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:53,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:53,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1918456325, now seen corresponding path program 1 times [2025-02-08 08:59:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:53,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450855003] [2025-02-08 08:59:53,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:53,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 08:59:53,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 08:59:53,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:53,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:53,745 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 08:59:53,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450855003] [2025-02-08 08:59:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450855003] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:59:53,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:59:53,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:59:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223600100] [2025-02-08 08:59:53,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:59:53,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:59:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:53,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:59:53,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:59:53,763 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 08:59:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:53,796 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2025-02-08 08:59:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:59:53,797 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 08:59:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:53,802 INFO L225 Difference]: With dead ends: 31 [2025-02-08 08:59:53,802 INFO L226 Difference]: Without dead ends: 24 [2025-02-08 08:59:53,805 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 08:59:53,807 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 08:59:53,808 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 08:59:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-08 08:59:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-02-08 08:59:53,833 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 08:59:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-08 08:59:53,839 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-02-08 08:59:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:53,839 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-08 08:59:53,840 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 08:59:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-08 08:59:53,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 08:59:53,842 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:53,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:59:53,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:59:53,842 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:53,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash -657396084, now seen corresponding path program 1 times [2025-02-08 08:59:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184381138] [2025-02-08 08:59:53,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:53,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:59:53,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:59:53,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:53,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:53,930 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 08:59:53,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184381138] [2025-02-08 08:59:53,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184381138] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:59:53,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:59:53,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:59:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547453882] [2025-02-08 08:59:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:59:53,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:59:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:53,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:59:53,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:59:53,934 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 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 08:59:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:54,011 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-02-08 08:59:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:59:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 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 08:59:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:54,012 INFO L225 Difference]: With dead ends: 24 [2025-02-08 08:59:54,012 INFO L226 Difference]: Without dead ends: 22 [2025-02-08 08:59:54,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 08:59:54,013 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:59:54,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 25 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:59:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-08 08:59:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-02-08 08:59:54,016 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 08:59:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-02-08 08:59:54,017 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-02-08 08:59:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:54,017 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-02-08 08:59:54,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 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 08:59:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-02-08 08:59:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 08:59:54,018 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:54,018 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 08:59:54,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:59:54,018 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:54,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:54,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1219789848, now seen corresponding path program 1 times [2025-02-08 08:59:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:54,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145325717] [2025-02-08 08:59:54,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:54,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 08:59:54,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 08:59:54,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:54,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:54,164 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 08:59:54,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145325717] [2025-02-08 08:59:54,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145325717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:59:54,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:59:54,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:59:54,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729959436] [2025-02-08 08:59:54,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:59:54,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:59:54,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:54,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:59:54,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:59:54,168 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 08:59:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:54,192 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-02-08 08:59:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:59:54,193 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 08:59:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:54,193 INFO L225 Difference]: With dead ends: 34 [2025-02-08 08:59:54,193 INFO L226 Difference]: Without dead ends: 32 [2025-02-08 08:59:54,194 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 08:59:54,194 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 08:59:54,194 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 08:59:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-08 08:59:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-02-08 08:59:54,198 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 08:59:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-02-08 08:59:54,199 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2025-02-08 08:59:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:54,199 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-02-08 08:59:54,199 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 08:59:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-02-08 08:59:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-08 08:59:54,200 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:54,200 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 08:59:54,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:59:54,201 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:54,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2143764894, now seen corresponding path program 1 times [2025-02-08 08:59:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:54,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763504789] [2025-02-08 08:59:54,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:54,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:54,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:59:54,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:59:54,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:54,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:54,321 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 08:59:54,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:54,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763504789] [2025-02-08 08:59:54,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763504789] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:54,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801487153] [2025-02-08 08:59:54,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:54,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:54,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:54,325 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 08:59:54,326 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 08:59:54,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 08:59:54,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 08:59:54,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:54,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:54,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:59:54,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:54,441 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 08:59:54,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:59:54,553 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 08:59:54,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801487153] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:59:54,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:59:54,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-02-08 08:59:54,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071946206] [2025-02-08 08:59:54,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:59:54,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 08:59:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:54,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 08:59:54,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-02-08 08:59:54,555 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 08:59:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:54,735 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2025-02-08 08:59:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:59:54,736 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 08:59:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:54,737 INFO L225 Difference]: With dead ends: 90 [2025-02-08 08:59:54,737 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 08:59:54,738 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 08:59:54,738 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:59:54,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 88 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:59:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 08:59:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2025-02-08 08:59:54,745 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 08:59:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2025-02-08 08:59:54,746 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2025-02-08 08:59:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:54,746 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2025-02-08 08:59:54,746 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 08:59:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2025-02-08 08:59:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-08 08:59:54,747 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:54,747 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 08:59:54,753 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 08:59:54,951 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 08:59:54,951 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:54,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2098828437, now seen corresponding path program 2 times [2025-02-08 08:59:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786941973] [2025-02-08 08:59:54,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:59:54,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:54,959 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 08:59:54,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:59:54,968 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:59:54,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:55,028 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 08:59:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786941973] [2025-02-08 08:59:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786941973] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263385881] [2025-02-08 08:59:55,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:59:55,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:55,035 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 08:59:55,036 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 08:59:55,053 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-08 08:59:55,061 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 08:59:55,061 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:59:55,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:55,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:59:55,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:55,090 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 08:59:55,091 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:59:55,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263385881] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:59:55,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 08:59:55,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-08 08:59:55,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852268449] [2025-02-08 08:59:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:59:55,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:59:55,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:55,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:59:55,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:59:55,092 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 08:59:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:55,113 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2025-02-08 08:59:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:59:55,114 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 08:59:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:55,115 INFO L225 Difference]: With dead ends: 59 [2025-02-08 08:59:55,115 INFO L226 Difference]: Without dead ends: 58 [2025-02-08 08:59:55,115 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 08:59:55,115 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 08:59:55,116 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 08:59:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-08 08:59:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2025-02-08 08:59:55,122 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 08:59:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2025-02-08 08:59:55,123 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 30 [2025-02-08 08:59:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:55,123 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2025-02-08 08:59:55,123 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 08:59:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2025-02-08 08:59:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 08:59:55,124 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:55,124 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 08:59:55,130 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 08:59:55,328 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 08:59:55,328 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:55,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 639172080, now seen corresponding path program 1 times [2025-02-08 08:59:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868132648] [2025-02-08 08:59:55,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:55,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:55,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 08:59:55,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:59:55,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:55,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:55,418 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 08:59:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868132648] [2025-02-08 08:59:55,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868132648] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221957949] [2025-02-08 08:59:55,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:55,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:55,420 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 08:59:55,422 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 08:59:55,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 08:59:55,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:59:55,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:55,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:55,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:59:55,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:55,537 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 08:59:55,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:59:55,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221957949] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:59:55,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 08:59:55,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-02-08 08:59:55,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293176821] [2025-02-08 08:59:55,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:59:55,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:59:55,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:55,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:59:55,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 08:59:55,538 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 08:59:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:55,565 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2025-02-08 08:59:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:59:55,565 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 08:59:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:55,566 INFO L225 Difference]: With dead ends: 81 [2025-02-08 08:59:55,566 INFO L226 Difference]: Without dead ends: 80 [2025-02-08 08:59:55,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 08:59:55,567 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 08:59:55,567 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 08:59:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-08 08:59:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2025-02-08 08:59:55,575 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 08:59:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2025-02-08 08:59:55,577 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2025-02-08 08:59:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:55,577 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2025-02-08 08:59:55,577 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 08:59:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2025-02-08 08:59:55,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 08:59:55,578 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:55,578 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 08:59:55,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:59:55,778 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 08:59:55,779 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:55,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2024708909, now seen corresponding path program 1 times [2025-02-08 08:59:55,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:55,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357137178] [2025-02-08 08:59:55,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:55,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:55,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 08:59:55,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 08:59:55,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:55,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:55,889 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 08:59:55,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:55,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357137178] [2025-02-08 08:59:55,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357137178] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:55,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177473612] [2025-02-08 08:59:55,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:55,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:55,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:55,891 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 08:59:55,893 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 08:59:55,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 08:59:55,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 08:59:55,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:55,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:55,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:59:55,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:55,983 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 08:59:55,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:59:56,138 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 08:59:56,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177473612] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:59:56,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:59:56,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-02-08 08:59:56,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909045029] [2025-02-08 08:59:56,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:59:56,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 08:59:56,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:56,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 08:59:56,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-02-08 08:59:56,141 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 08:59:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:56,283 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2025-02-08 08:59:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 08:59:56,284 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 08:59:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:56,286 INFO L225 Difference]: With dead ends: 140 [2025-02-08 08:59:56,286 INFO L226 Difference]: Without dead ends: 138 [2025-02-08 08:59:56,286 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 08:59:56,287 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 08:59:56,287 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 08:59:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-08 08:59:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2025-02-08 08:59:56,298 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 08:59:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2025-02-08 08:59:56,300 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 45 [2025-02-08 08:59:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:56,300 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2025-02-08 08:59:56,300 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 08:59:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2025-02-08 08:59:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 08:59:56,302 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:56,302 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 08:59:56,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 08:59:56,502 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 08:59:56,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:56,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1066317380, now seen corresponding path program 1 times [2025-02-08 08:59:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:56,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361355056] [2025-02-08 08:59:56,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:56,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 08:59:56,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 08:59:56,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:56,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:56,658 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 08:59:56,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:56,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361355056] [2025-02-08 08:59:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361355056] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:56,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916670831] [2025-02-08 08:59:56,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:59:56,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:56,661 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 08:59:56,662 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 08:59:56,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 08:59:56,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 08:59:56,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:59:56,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:56,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:59:56,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:56,764 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 08:59:56,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:59:56,937 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 08:59:56,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916670831] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:59:56,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:59:56,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 18 [2025-02-08 08:59:56,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938979197] [2025-02-08 08:59:56,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:59:56,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:59:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:56,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:59:56,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:59:56,940 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 08:59:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:57,381 INFO L93 Difference]: Finished difference Result 256 states and 503 transitions. [2025-02-08 08:59:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 08:59:57,382 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 08:59:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:57,384 INFO L225 Difference]: With dead ends: 256 [2025-02-08 08:59:57,384 INFO L226 Difference]: Without dead ends: 162 [2025-02-08 08:59:57,386 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 08:59:57,387 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 106 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:59:57,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 72 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:59:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-02-08 08:59:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 102. [2025-02-08 08:59:57,404 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 08:59:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 170 transitions. [2025-02-08 08:59:57,405 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 170 transitions. Word has length 62 [2025-02-08 08:59:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:57,405 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 170 transitions. [2025-02-08 08:59:57,406 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 08:59:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 170 transitions. [2025-02-08 08:59:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-08 08:59:57,409 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:57,409 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1] [2025-02-08 08:59:57,414 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 08:59:57,609 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 08:59:57,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:57,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash -387367056, now seen corresponding path program 2 times [2025-02-08 08:59:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:57,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766487487] [2025-02-08 08:59:57,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:59:57,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:57,620 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 122 statements into 2 equivalence classes. [2025-02-08 08:59:57,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 122 of 122 statements. [2025-02-08 08:59:57,629 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:59:57,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 30 proven. 126 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2025-02-08 08:59:57,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:57,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766487487] [2025-02-08 08:59:57,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766487487] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:57,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580561904] [2025-02-08 08:59:57,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:59:57,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:57,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:57,711 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 08:59:57,713 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 08:59:57,735 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 122 statements into 2 equivalence classes. [2025-02-08 08:59:57,754 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 122 of 122 statements. [2025-02-08 08:59:57,755 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:59:57,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:57,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 08:59:57,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 9 proven. 130 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-08 08:59:57,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:59:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 9 proven. 130 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-08 08:59:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580561904] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:59:58,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:59:58,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2025-02-08 08:59:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077902654] [2025-02-08 08:59:58,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:59:58,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 08:59:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:58,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 08:59:58,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:59:58,172 INFO L87 Difference]: Start difference. First operand 102 states and 170 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-08 08:59:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:58,243 INFO L93 Difference]: Finished difference Result 161 states and 277 transitions. [2025-02-08 08:59:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:59:58,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 122 [2025-02-08 08:59:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:58,244 INFO L225 Difference]: With dead ends: 161 [2025-02-08 08:59:58,245 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 08:59:58,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-02-08 08:59:58,246 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:59:58,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 60 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 08:59:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 08:59:58,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-02-08 08:59:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (26), 10 states have call predecessors, (26), 6 states have call successors, (26) [2025-02-08 08:59:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2025-02-08 08:59:58,254 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 122 [2025-02-08 08:59:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:58,254 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2025-02-08 08:59:58,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-08 08:59:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2025-02-08 08:59:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-08 08:59:58,257 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:58,257 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1] [2025-02-08 08:59:58,263 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 08:59:58,457 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 08:59:58,458 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:58,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1986817177, now seen corresponding path program 3 times [2025-02-08 08:59:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303007521] [2025-02-08 08:59:58,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:59:58,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:58,465 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 123 statements into 11 equivalence classes. [2025-02-08 08:59:58,474 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 70 of 123 statements. [2025-02-08 08:59:58,474 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 08:59:58,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 197 proven. 19 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2025-02-08 08:59:58,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:58,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303007521] [2025-02-08 08:59:58,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303007521] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:58,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195310841] [2025-02-08 08:59:58,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:59:58,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:58,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:58,555 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 08:59:58,560 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 08:59:58,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 123 statements into 11 equivalence classes. [2025-02-08 08:59:58,602 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 70 of 123 statements. [2025-02-08 08:59:58,602 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 08:59:58,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:58,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:59:58,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 195 proven. 21 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2025-02-08 08:59:58,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:59:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 195 proven. 22 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2025-02-08 08:59:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195310841] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:59:58,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:59:58,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 13 [2025-02-08 08:59:58,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175049191] [2025-02-08 08:59:58,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:59:58,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 08:59:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:59:58,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 08:59:58,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-08 08:59:58,908 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2025-02-08 08:59:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:59:59,001 INFO L93 Difference]: Finished difference Result 123 states and 178 transitions. [2025-02-08 08:59:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:59:59,002 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 123 [2025-02-08 08:59:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:59:59,003 INFO L225 Difference]: With dead ends: 123 [2025-02-08 08:59:59,003 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 08:59:59,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 239 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:59:59,004 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 52 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:59:59,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 79 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:59:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 08:59:59,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-02-08 08:59:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.08) internal successors, (54), 49 states have internal predecessors, (54), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (22), 10 states have call predecessors, (22), 6 states have call successors, (22) [2025-02-08 08:59:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2025-02-08 08:59:59,012 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 123 [2025-02-08 08:59:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:59:59,012 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2025-02-08 08:59:59,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2025-02-08 08:59:59,012 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2025-02-08 08:59:59,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-08 08:59:59,013 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:59:59,013 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 08:59:59,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:59:59,218 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 08:59:59,218 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 08:59:59,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:59:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1802697492, now seen corresponding path program 4 times [2025-02-08 08:59:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:59:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257678785] [2025-02-08 08:59:59,219 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:59:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:59:59,226 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 104 statements into 2 equivalence classes. [2025-02-08 08:59:59,237 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 63 of 104 statements. [2025-02-08 08:59:59,237 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 08:59:59,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 72 proven. 159 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-02-08 08:59:59,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:59:59,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257678785] [2025-02-08 08:59:59,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257678785] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:59:59,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397065209] [2025-02-08 08:59:59,381 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:59:59,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:59:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:59:59,383 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 08:59:59,387 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 08:59:59,412 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 104 statements into 2 equivalence classes. [2025-02-08 08:59:59,422 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 63 of 104 statements. [2025-02-08 08:59:59,422 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 08:59:59,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:59:59,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:59:59,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:59:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 158 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-02-08 08:59:59,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 174 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-02-08 09:00:00,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397065209] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:00,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:00,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-02-08 09:00:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975596617] [2025-02-08 09:00:00,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:00,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 09:00:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:00,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 09:00:00,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-02-08 09:00:00,025 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2025-02-08 09:00:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:00,259 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2025-02-08 09:00:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 09:00:00,259 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 104 [2025-02-08 09:00:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:00,264 INFO L225 Difference]: With dead ends: 133 [2025-02-08 09:00:00,264 INFO L226 Difference]: Without dead ends: 72 [2025-02-08 09:00:00,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 200 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2025-02-08 09:00:00,265 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 120 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:00,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 81 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-08 09:00:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2025-02-08 09:00:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 7 states have call successors, (7), 5 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 09:00:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2025-02-08 09:00:00,271 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 104 [2025-02-08 09:00:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:00,271 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2025-02-08 09:00:00,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2025-02-08 09:00:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2025-02-08 09:00:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2025-02-08 09:00:00,279 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:00,279 INFO L218 NwaCegarLoop]: trace histogram [24, 21, 19, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 9, 7, 5, 1, 1, 1, 1] [2025-02-08 09:00:00,285 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 09:00:00,479 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 09:00:00,479 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:00,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 633754089, now seen corresponding path program 5 times [2025-02-08 09:00:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:00,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707696524] [2025-02-08 09:00:00,483 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:00:00,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:00,490 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 222 statements into 15 equivalence classes. [2025-02-08 09:00:00,498 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 143 of 222 statements. [2025-02-08 09:00:00,498 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-08 09:00:00,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 329 proven. 501 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2025-02-08 09:00:00,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707696524] [2025-02-08 09:00:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707696524] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9967434] [2025-02-08 09:00:00,756 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:00:00,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:00,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:00,757 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 09:00:00,759 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 09:00:00,792 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 222 statements into 15 equivalence classes. [2025-02-08 09:00:00,815 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 143 of 222 statements. [2025-02-08 09:00:00,816 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-08 09:00:00,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:00,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 09:00:00,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 689 proven. 384 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2025-02-08 09:00:00,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 330 proven. 509 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2025-02-08 09:00:01,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9967434] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:01,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:01,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 15] total 21 [2025-02-08 09:00:01,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001144383] [2025-02-08 09:00:01,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:01,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 09:00:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:01,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 09:00:01,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-02-08 09:00:01,650 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2025-02-08 09:00:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:01,905 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2025-02-08 09:00:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 09:00:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 222 [2025-02-08 09:00:01,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:01,906 INFO L225 Difference]: With dead ends: 142 [2025-02-08 09:00:01,907 INFO L226 Difference]: Without dead ends: 86 [2025-02-08 09:00:01,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 434 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 09:00:01,908 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 144 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:01,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 93 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:01,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-02-08 09:00:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2025-02-08 09:00:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 9 states have call successors, (9), 6 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 09:00:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2025-02-08 09:00:01,918 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 222 [2025-02-08 09:00:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:01,919 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2025-02-08 09:00:01,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2025-02-08 09:00:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2025-02-08 09:00:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-08 09:00:01,920 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:01,920 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1] [2025-02-08 09:00:01,939 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 09:00:02,125 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 09:00:02,126 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:02,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1611162221, now seen corresponding path program 6 times [2025-02-08 09:00:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:02,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335030305] [2025-02-08 09:00:02,127 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:00:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:02,132 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 123 statements into 9 equivalence classes. [2025-02-08 09:00:02,147 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 123 of 123 statements. [2025-02-08 09:00:02,147 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-08 09:00:02,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 81 proven. 121 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2025-02-08 09:00:02,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335030305] [2025-02-08 09:00:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335030305] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725499818] [2025-02-08 09:00:02,474 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:00:02,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:02,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:02,478 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 09:00:02,479 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 09:00:02,507 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 123 statements into 9 equivalence classes. [2025-02-08 09:00:02,530 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 123 of 123 statements. [2025-02-08 09:00:02,530 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-08 09:00:02,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:02,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 09:00:02,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 61 proven. 95 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2025-02-08 09:00:02,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 103 proven. 95 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2025-02-08 09:00:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725499818] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:03,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:03,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 31 [2025-02-08 09:00:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127573164] [2025-02-08 09:00:03,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:03,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 09:00:03,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:03,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 09:00:03,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2025-02-08 09:00:03,434 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-02-08 09:00:03,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:03,614 INFO L93 Difference]: Finished difference Result 125 states and 174 transitions. [2025-02-08 09:00:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 09:00:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) Word has length 123 [2025-02-08 09:00:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:03,615 INFO L225 Difference]: With dead ends: 125 [2025-02-08 09:00:03,616 INFO L226 Difference]: Without dead ends: 124 [2025-02-08 09:00:03,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 229 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2025-02-08 09:00:03,617 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:03,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 144 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-08 09:00:03,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 103. [2025-02-08 09:00:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (44), 16 states have call predecessors, (44), 11 states have call successors, (44) [2025-02-08 09:00:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 142 transitions. [2025-02-08 09:00:03,630 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 142 transitions. Word has length 123 [2025-02-08 09:00:03,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:03,632 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 142 transitions. [2025-02-08 09:00:03,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-02-08 09:00:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 142 transitions. [2025-02-08 09:00:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2025-02-08 09:00:03,633 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:03,634 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 21, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 8, 6, 1, 1, 1, 1] [2025-02-08 09:00:03,641 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 09:00:03,834 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 09:00:03,834 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:03,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 753148768, now seen corresponding path program 7 times [2025-02-08 09:00:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:03,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492691674] [2025-02-08 09:00:03,835 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:00:03,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:03,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-02-08 09:00:03,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-02-08 09:00:03,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:03,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 250 proven. 745 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2025-02-08 09:00:04,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:04,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492691674] [2025-02-08 09:00:04,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492691674] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:04,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911767051] [2025-02-08 09:00:04,046 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:00:04,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:04,048 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 09:00:04,050 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 09:00:04,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-02-08 09:00:04,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-02-08 09:00:04,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:04,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:04,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 09:00:04,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 1376 proven. 182 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2025-02-08 09:00:04,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 248 proven. 828 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2025-02-08 09:00:04,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911767051] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:04,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:04,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-02-08 09:00:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802499581] [2025-02-08 09:00:04,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:04,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 09:00:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:04,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 09:00:04,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2025-02-08 09:00:04,994 INFO L87 Difference]: Start difference. First operand 103 states and 142 transitions. Second operand has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 14 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (22), 8 states have call predecessors, (22), 14 states have call successors, (22) [2025-02-08 09:00:05,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:05,168 INFO L93 Difference]: Finished difference Result 210 states and 310 transitions. [2025-02-08 09:00:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 09:00:05,168 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 14 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (22), 8 states have call predecessors, (22), 14 states have call successors, (22) Word has length 260 [2025-02-08 09:00:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:05,169 INFO L225 Difference]: With dead ends: 210 [2025-02-08 09:00:05,169 INFO L226 Difference]: Without dead ends: 112 [2025-02-08 09:00:05,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 509 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2025-02-08 09:00:05,171 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 56 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:05,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 125 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:05,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-02-08 09:00:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2025-02-08 09:00:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 80 states have internal predecessors, (87), 12 states have call successors, (12), 10 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 09:00:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 125 transitions. [2025-02-08 09:00:05,177 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 125 transitions. Word has length 260 [2025-02-08 09:00:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:05,177 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 125 transitions. [2025-02-08 09:00:05,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 14 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (22), 8 states have call predecessors, (22), 14 states have call successors, (22) [2025-02-08 09:00:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 125 transitions. [2025-02-08 09:00:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-08 09:00:05,179 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:05,179 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 09:00:05,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 09:00:05,379 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 09:00:05,380 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:05,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1316888640, now seen corresponding path program 8 times [2025-02-08 09:00:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922105068] [2025-02-08 09:00:05,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:05,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:05,388 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 300 statements into 2 equivalence classes. [2025-02-08 09:00:05,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 300 of 300 statements. [2025-02-08 09:00:05,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:05,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 484 proven. 1076 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2025-02-08 09:00:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922105068] [2025-02-08 09:00:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922105068] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502451383] [2025-02-08 09:00:05,696 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:05,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:05,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:05,699 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 09:00:05,700 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 09:00:05,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 300 statements into 2 equivalence classes. [2025-02-08 09:00:05,788 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 300 of 300 statements. [2025-02-08 09:00:05,788 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:05,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:05,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 09:00:05,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 569 proven. 1181 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2025-02-08 09:00:05,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 569 proven. 1253 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2025-02-08 09:00:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502451383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:07,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:07,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2025-02-08 09:00:07,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239349806] [2025-02-08 09:00:07,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:07,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 09:00:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:07,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 09:00:07,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2025-02-08 09:00:07,170 INFO L87 Difference]: Start difference. First operand 103 states and 125 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 09:00:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:07,544 INFO L93 Difference]: Finished difference Result 241 states and 314 transitions. [2025-02-08 09:00:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 09:00:07,545 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 300 [2025-02-08 09:00:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:07,546 INFO L225 Difference]: With dead ends: 241 [2025-02-08 09:00:07,546 INFO L226 Difference]: Without dead ends: 143 [2025-02-08 09:00:07,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 585 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=604, Invalid=1748, Unknown=0, NotChecked=0, Total=2352 [2025-02-08 09:00:07,551 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 355 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:07,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 149 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:00:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-02-08 09:00:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 121. [2025-02-08 09:00:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 94 states have internal predecessors, (103), 14 states have call successors, (14), 11 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 09:00:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2025-02-08 09:00:07,565 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 300 [2025-02-08 09:00:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:07,566 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2025-02-08 09:00:07,566 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 09:00:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2025-02-08 09:00:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-08 09:00:07,567 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:07,568 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 09:00:07,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 09:00:07,771 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 09:00:07,772 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:07,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -131949088, now seen corresponding path program 9 times [2025-02-08 09:00:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209642826] [2025-02-08 09:00:07,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:07,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 300 statements into 21 equivalence classes. [2025-02-08 09:00:07,797 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 208 of 300 statements. [2025-02-08 09:00:07,797 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-08 09:00:07,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 791 proven. 523 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2025-02-08 09:00:07,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209642826] [2025-02-08 09:00:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209642826] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718006248] [2025-02-08 09:00:07,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:07,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:07,986 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 09:00:07,987 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 09:00:08,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 300 statements into 21 equivalence classes. [2025-02-08 09:00:08,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 208 of 300 statements. [2025-02-08 09:00:08,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-08 09:00:08,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:08,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 09:00:08,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 800 proven. 532 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2025-02-08 09:00:08,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 812 proven. 551 refuted. 0 times theorem prover too weak. 1787 trivial. 0 not checked. [2025-02-08 09:00:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718006248] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:08,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 17] total 21 [2025-02-08 09:00:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038892371] [2025-02-08 09:00:08,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:08,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 09:00:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:08,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 09:00:08,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-02-08 09:00:08,881 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) [2025-02-08 09:00:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:09,113 INFO L93 Difference]: Finished difference Result 288 states and 369 transitions. [2025-02-08 09:00:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 09:00:09,113 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), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) Word has length 300 [2025-02-08 09:00:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:09,115 INFO L225 Difference]: With dead ends: 288 [2025-02-08 09:00:09,115 INFO L226 Difference]: Without dead ends: 142 [2025-02-08 09:00:09,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 589 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 09:00:09,116 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 77 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:09,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 142 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-02-08 09:00:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2025-02-08 09:00:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 92 states have internal predecessors, (98), 14 states have call successors, (14), 11 states have call predecessors, (14), 8 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) [2025-02-08 09:00:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2025-02-08 09:00:09,126 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 300 [2025-02-08 09:00:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:09,127 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2025-02-08 09:00:09,127 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), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) [2025-02-08 09:00:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2025-02-08 09:00:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2025-02-08 09:00:09,132 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:09,132 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 09:00:09,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 09:00:09,333 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 09:00:09,334 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:09,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1664869117, now seen corresponding path program 10 times [2025-02-08 09:00:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:09,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128454674] [2025-02-08 09:00:09,334 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:00:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:09,347 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 404 statements into 2 equivalence classes. [2025-02-08 09:00:09,379 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 404 of 404 statements. [2025-02-08 09:00:09,381 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:00:09,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:10,804 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 09:00:10,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:10,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128454674] [2025-02-08 09:00:10,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128454674] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:10,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781110990] [2025-02-08 09:00:10,805 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:00:10,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:10,807 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 09:00:10,809 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 09:00:10,873 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 404 statements into 2 equivalence classes. [2025-02-08 09:00:10,934 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 404 of 404 statements. [2025-02-08 09:00:10,934 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:00:10,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:10,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-08 09:00:10,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:11,235 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 09:00:11,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:16,717 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 09:00:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781110990] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:16,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2025-02-08 09:00:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988648323] [2025-02-08 09:00:16,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:16,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-08 09:00:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:16,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-08 09:00:16,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 09:00:16,720 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-08 09:00:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:16,901 INFO L93 Difference]: Finished difference Result 163 states and 221 transitions. [2025-02-08 09:00:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 09:00:16,902 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 404 [2025-02-08 09:00:16,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:16,903 INFO L225 Difference]: With dead ends: 163 [2025-02-08 09:00:16,904 INFO L226 Difference]: Without dead ends: 162 [2025-02-08 09:00:16,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 786 SyntacticMatches, 62 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=450, Invalid=1620, Unknown=0, NotChecked=0, Total=2070 [2025-02-08 09:00:16,908 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:16,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 280 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:00:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-02-08 09:00:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 144. [2025-02-08 09:00:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 113 states have internal predecessors, (119), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (58), 19 states have call predecessors, (58), 16 states have call successors, (58) [2025-02-08 09:00:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 194 transitions. [2025-02-08 09:00:16,921 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 194 transitions. Word has length 404 [2025-02-08 09:00:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:16,923 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 194 transitions. [2025-02-08 09:00:16,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-08 09:00:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 194 transitions. [2025-02-08 09:00:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2025-02-08 09:00:16,932 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:16,932 INFO L218 NwaCegarLoop]: trace histogram [94, 92, 76, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 29, 18, 1, 1, 1, 1] [2025-02-08 09:00:16,939 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 09:00:17,136 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 09:00:17,136 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:17,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1535367697, now seen corresponding path program 11 times [2025-02-08 09:00:17,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:17,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379421766] [2025-02-08 09:00:17,139 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:00:17,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:17,174 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 914 statements into 64 equivalence classes. [2025-02-08 09:00:17,212 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) and asserted 506 of 914 statements. [2025-02-08 09:00:17,213 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2025-02-08 09:00:17,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 4188 proven. 3876 refuted. 0 times theorem prover too weak. 22388 trivial. 0 not checked. [2025-02-08 09:00:17,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:17,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379421766] [2025-02-08 09:00:17,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379421766] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:17,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996554160] [2025-02-08 09:00:17,721 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 09:00:17,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:17,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:17,723 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 09:00:17,724 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 09:00:17,869 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 914 statements into 64 equivalence classes. [2025-02-08 09:00:17,959 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) and asserted 506 of 914 statements. [2025-02-08 09:00:17,959 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2025-02-08 09:00:17,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:17,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 09:00:17,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 4188 proven. 3872 refuted. 0 times theorem prover too weak. 22392 trivial. 0 not checked. [2025-02-08 09:00:18,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 4184 proven. 3965 refuted. 0 times theorem prover too weak. 22303 trivial. 0 not checked. [2025-02-08 09:00:20,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996554160] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:20,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 26] total 32 [2025-02-08 09:00:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353062999] [2025-02-08 09:00:20,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:20,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 09:00:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:20,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 09:00:20,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2025-02-08 09:00:20,666 INFO L87 Difference]: Start difference. First operand 144 states and 194 transitions. Second operand has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 22 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (35), 15 states have call predecessors, (35), 22 states have call successors, (35) [2025-02-08 09:00:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:21,165 INFO L93 Difference]: Finished difference Result 320 states and 478 transitions. [2025-02-08 09:00:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-08 09:00:21,165 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 22 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (35), 15 states have call predecessors, (35), 22 states have call successors, (35) Word has length 914 [2025-02-08 09:00:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:21,167 INFO L225 Difference]: With dead ends: 320 [2025-02-08 09:00:21,167 INFO L226 Difference]: Without dead ends: 181 [2025-02-08 09:00:21,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1813 SyntacticMatches, 12 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=782, Invalid=2298, Unknown=0, NotChecked=0, Total=3080 [2025-02-08 09:00:21,169 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 467 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:21,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 173 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 09:00:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-02-08 09:00:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2025-02-08 09:00:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 124 states have internal predecessors, (130), 20 states have call successors, (20), 14 states have call predecessors, (20), 10 states have return successors, (50), 18 states have call predecessors, (50), 19 states have call successors, (50) [2025-02-08 09:00:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 200 transitions. [2025-02-08 09:00:21,177 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 200 transitions. Word has length 914 [2025-02-08 09:00:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:21,177 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 200 transitions. [2025-02-08 09:00:21,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 22 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (35), 15 states have call predecessors, (35), 22 states have call successors, (35) [2025-02-08 09:00:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 200 transitions. [2025-02-08 09:00:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2025-02-08 09:00:21,181 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:21,181 INFO L218 NwaCegarLoop]: trace histogram [84, 82, 68, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1] [2025-02-08 09:00:21,188 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 09:00:21,381 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 09:00:21,382 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:21,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2119662861, now seen corresponding path program 12 times [2025-02-08 09:00:21,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:21,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978511152] [2025-02-08 09:00:21,382 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:00:21,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:21,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 816 statements into 60 equivalence classes. [2025-02-08 09:00:21,491 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) and asserted 742 of 816 statements. [2025-02-08 09:00:21,492 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2025-02-08 09:00:21,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3204 proven. 2233 refuted. 0 times theorem prover too weak. 18778 trivial. 0 not checked. [2025-02-08 09:00:21,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:21,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978511152] [2025-02-08 09:00:21,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978511152] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:21,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370849452] [2025-02-08 09:00:21,993 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 09:00:21,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:21,998 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 09:00:21,999 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 09:00:22,174 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 816 statements into 60 equivalence classes. [2025-02-08 09:00:22,332 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) and asserted 742 of 816 statements. [2025-02-08 09:00:22,332 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2025-02-08 09:00:22,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:22,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 09:00:22,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3188 proven. 2246 refuted. 0 times theorem prover too weak. 18781 trivial. 0 not checked. [2025-02-08 09:00:22,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3196 proven. 2310 refuted. 0 times theorem prover too weak. 18709 trivial. 0 not checked. [2025-02-08 09:00:23,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370849452] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:23,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:23,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 25 [2025-02-08 09:00:23,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027914853] [2025-02-08 09:00:23,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:23,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 09:00:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:23,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 09:00:23,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2025-02-08 09:00:23,981 INFO L87 Difference]: Start difference. First operand 157 states and 200 transitions. Second operand has 25 states, 25 states have (on average 5.4) internal successors, (135), 25 states have internal predecessors, (135), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) [2025-02-08 09:00:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:24,422 INFO L93 Difference]: Finished difference Result 408 states and 542 transitions. [2025-02-08 09:00:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 09:00:24,422 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.4) internal successors, (135), 25 states have internal predecessors, (135), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) Word has length 816 [2025-02-08 09:00:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:24,426 INFO L225 Difference]: With dead ends: 408 [2025-02-08 09:00:24,426 INFO L226 Difference]: Without dead ends: 228 [2025-02-08 09:00:24,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1682 GetRequests, 1622 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=699, Invalid=1953, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 09:00:24,430 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 189 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:24,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 177 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:00:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-08 09:00:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 190. [2025-02-08 09:00:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 154 states have (on average 1.0389610389610389) internal successors, (160), 150 states have internal predecessors, (160), 24 states have call successors, (24), 18 states have call predecessors, (24), 11 states have return successors, (57), 21 states have call predecessors, (57), 23 states have call successors, (57) [2025-02-08 09:00:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 241 transitions. [2025-02-08 09:00:24,444 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 241 transitions. Word has length 816 [2025-02-08 09:00:24,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:24,444 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 241 transitions. [2025-02-08 09:00:24,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.4) internal successors, (135), 25 states have internal predecessors, (135), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) [2025-02-08 09:00:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 241 transitions. [2025-02-08 09:00:24,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2025-02-08 09:00:24,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:24,449 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 09:00:24,458 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 09:00:24,652 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 09:00:24,653 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:24,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1445505030, now seen corresponding path program 13 times [2025-02-08 09:00:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045896820] [2025-02-08 09:00:24,654 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:00:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:24,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 810 statements into 1 equivalence classes. [2025-02-08 09:00:24,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 810 of 810 statements. [2025-02-08 09:00:24,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:24,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 2257 proven. 4945 refuted. 0 times theorem prover too weak. 16657 trivial. 0 not checked. [2025-02-08 09:00:25,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045896820] [2025-02-08 09:00:25,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045896820] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494492704] [2025-02-08 09:00:25,426 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 09:00:25,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:25,429 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 09:00:25,430 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 09:00:25,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 810 statements into 1 equivalence classes. [2025-02-08 09:00:25,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 810 of 810 statements. [2025-02-08 09:00:25,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:00:25,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:25,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 09:00:25,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 12210 proven. 2667 refuted. 0 times theorem prover too weak. 8982 trivial. 0 not checked. [2025-02-08 09:00:25,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 2246 proven. 5308 refuted. 0 times theorem prover too weak. 16305 trivial. 0 not checked. [2025-02-08 09:00:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494492704] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:28,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:28,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 32 [2025-02-08 09:00:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168442245] [2025-02-08 09:00:28,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:28,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 09:00:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:28,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 09:00:28,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2025-02-08 09:00:28,640 INFO L87 Difference]: Start difference. First operand 190 states and 241 transitions. Second operand has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2025-02-08 09:00:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:29,024 INFO L93 Difference]: Finished difference Result 396 states and 533 transitions. [2025-02-08 09:00:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 09:00:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) Word has length 810 [2025-02-08 09:00:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:29,027 INFO L225 Difference]: With dead ends: 396 [2025-02-08 09:00:29,027 INFO L226 Difference]: Without dead ends: 211 [2025-02-08 09:00:29,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1603 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2025-02-08 09:00:29,028 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 230 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:29,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 243 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:00:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-02-08 09:00:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 169. [2025-02-08 09:00:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 134 states have internal predecessors, (141), 22 states have call successors, (22), 18 states have call predecessors, (22), 9 states have return successors, (48), 16 states have call predecessors, (48), 21 states have call successors, (48) [2025-02-08 09:00:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 211 transitions. [2025-02-08 09:00:29,037 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 211 transitions. Word has length 810 [2025-02-08 09:00:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:29,037 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 211 transitions. [2025-02-08 09:00:29,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2025-02-08 09:00:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 211 transitions. [2025-02-08 09:00:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1583 [2025-02-08 09:00:29,047 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:29,048 INFO L218 NwaCegarLoop]: trace histogram [163, 159, 132, 82, 82, 82, 82, 80, 80, 80, 80, 80, 79, 79, 79, 78, 50, 31, 1, 1, 1, 1] [2025-02-08 09:00:29,059 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 09:00:29,251 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 09:00:29,252 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:29,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:29,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1154918168, now seen corresponding path program 14 times [2025-02-08 09:00:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:29,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92167174] [2025-02-08 09:00:29,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:29,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:29,275 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1582 statements into 2 equivalence classes. [2025-02-08 09:00:29,374 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1582 of 1582 statements. [2025-02-08 09:00:29,374 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:29,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 92020 backedges. 4454 proven. 12646 refuted. 0 times theorem prover too weak. 74920 trivial. 0 not checked. [2025-02-08 09:00:31,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:31,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92167174] [2025-02-08 09:00:31,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92167174] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:31,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675802366] [2025-02-08 09:00:31,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:00:31,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:31,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:31,703 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 09:00:31,705 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 09:00:31,919 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1582 statements into 2 equivalence classes. [2025-02-08 09:00:32,130 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1582 of 1582 statements. [2025-02-08 09:00:32,130 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:00:32,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:32,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 09:00:32,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 92020 backedges. 29309 proven. 10901 refuted. 0 times theorem prover too weak. 51810 trivial. 0 not checked. [2025-02-08 09:00:32,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 92020 backedges. 5393 proven. 14273 refuted. 0 times theorem prover too weak. 72354 trivial. 0 not checked. [2025-02-08 09:00:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675802366] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:36,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 33] total 38 [2025-02-08 09:00:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153354146] [2025-02-08 09:00:36,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:36,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-08 09:00:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:36,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-08 09:00:36,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2025-02-08 09:00:36,391 INFO L87 Difference]: Start difference. First operand 169 states and 211 transitions. Second operand has 38 states, 38 states have (on average 5.973684210526316) internal successors, (227), 38 states have internal predecessors, (227), 33 states have call successors, (40), 4 states have call predecessors, (40), 16 states have return successors, (49), 18 states have call predecessors, (49), 31 states have call successors, (49) [2025-02-08 09:00:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:37,072 INFO L93 Difference]: Finished difference Result 403 states and 547 transitions. [2025-02-08 09:00:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-02-08 09:00:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.973684210526316) internal successors, (227), 38 states have internal predecessors, (227), 33 states have call successors, (40), 4 states have call predecessors, (40), 16 states have return successors, (49), 18 states have call predecessors, (49), 31 states have call successors, (49) Word has length 1582 [2025-02-08 09:00:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:37,075 INFO L225 Difference]: With dead ends: 403 [2025-02-08 09:00:37,075 INFO L226 Difference]: Without dead ends: 239 [2025-02-08 09:00:37,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3242 GetRequests, 3143 SyntacticMatches, 19 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1599, Invalid=5043, Unknown=0, NotChecked=0, Total=6642 [2025-02-08 09:00:37,078 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 415 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:37,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 186 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:00:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-02-08 09:00:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 190. [2025-02-08 09:00:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 151 states have internal predecessors, (159), 25 states have call successors, (25), 20 states have call predecessors, (25), 10 states have return successors, (63), 18 states have call predecessors, (63), 24 states have call successors, (63) [2025-02-08 09:00:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2025-02-08 09:00:37,088 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 1582 [2025-02-08 09:00:37,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:37,089 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2025-02-08 09:00:37,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.973684210526316) internal successors, (227), 38 states have internal predecessors, (227), 33 states have call successors, (40), 4 states have call predecessors, (40), 16 states have return successors, (49), 18 states have call predecessors, (49), 31 states have call successors, (49) [2025-02-08 09:00:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2025-02-08 09:00:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2025-02-08 09:00:37,093 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:37,093 INFO L218 NwaCegarLoop]: trace histogram [93, 92, 75, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 29, 18, 1, 1, 1, 1] [2025-02-08 09:00:37,102 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 09:00:37,294 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 09:00:37,294 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:37,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:37,295 INFO L85 PathProgramCache]: Analyzing trace with hash 128184554, now seen corresponding path program 15 times [2025-02-08 09:00:37,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:37,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094829395] [2025-02-08 09:00:37,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:37,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:37,310 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 908 statements into 66 equivalence classes. [2025-02-08 09:00:37,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) and asserted 552 of 908 statements. [2025-02-08 09:00:37,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2025-02-08 09:00:37,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 4444 proven. 1382 refuted. 0 times theorem prover too weak. 24227 trivial. 0 not checked. [2025-02-08 09:00:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094829395] [2025-02-08 09:00:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094829395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378411952] [2025-02-08 09:00:37,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:00:37,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:37,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:37,724 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 09:00:37,725 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 09:00:37,942 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 908 statements into 66 equivalence classes. [2025-02-08 09:00:38,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) and asserted 552 of 908 statements. [2025-02-08 09:00:38,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2025-02-08 09:00:38,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:38,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 09:00:38,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 4641 proven. 1482 refuted. 0 times theorem prover too weak. 23930 trivial. 0 not checked. [2025-02-08 09:00:38,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:00:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 4649 proven. 1545 refuted. 0 times theorem prover too weak. 23859 trivial. 0 not checked. [2025-02-08 09:00:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378411952] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:00:39,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:00:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 26 [2025-02-08 09:00:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641330197] [2025-02-08 09:00:39,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:00:39,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 09:00:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:00:39,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 09:00:39,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2025-02-08 09:00:39,778 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 states have internal predecessors, (140), 14 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) [2025-02-08 09:00:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:00:40,131 INFO L93 Difference]: Finished difference Result 421 states and 551 transitions. [2025-02-08 09:00:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 09:00:40,131 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 states have internal predecessors, (140), 14 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) Word has length 908 [2025-02-08 09:00:40,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:00:40,133 INFO L225 Difference]: With dead ends: 421 [2025-02-08 09:00:40,133 INFO L226 Difference]: Without dead ends: 216 [2025-02-08 09:00:40,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1857 GetRequests, 1802 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=578, Invalid=1584, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 09:00:40,135 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 177 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 09:00:40,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 171 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 09:00:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-02-08 09:00:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 187. [2025-02-08 09:00:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 149 states have internal predecessors, (155), 25 states have call successors, (25), 20 states have call predecessors, (25), 10 states have return successors, (52), 17 states have call predecessors, (52), 24 states have call successors, (52) [2025-02-08 09:00:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 232 transitions. [2025-02-08 09:00:40,144 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 232 transitions. Word has length 908 [2025-02-08 09:00:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:00:40,145 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 232 transitions. [2025-02-08 09:00:40,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 states have internal predecessors, (140), 14 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) [2025-02-08 09:00:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 232 transitions. [2025-02-08 09:00:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2025-02-08 09:00:40,149 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:00:40,150 INFO L218 NwaCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2025-02-08 09:00:40,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 09:00:40,353 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 09:00:40,354 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-08 09:00:40,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:00:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash 76540805, now seen corresponding path program 16 times [2025-02-08 09:00:40,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:00:40,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593155606] [2025-02-08 09:00:40,355 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:00:40,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:00:40,371 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1065 statements into 2 equivalence classes. [2025-02-08 09:00:40,410 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 1065 of 1065 statements. [2025-02-08 09:00:40,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:00:40,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 6976 proven. 7865 refuted. 0 times theorem prover too weak. 26625 trivial. 0 not checked. [2025-02-08 09:00:52,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:00:52,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593155606] [2025-02-08 09:00:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593155606] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:00:52,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111949109] [2025-02-08 09:00:52,950 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 09:00:52,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:00:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:00:52,953 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 09:00:52,954 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 09:00:53,190 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1065 statements into 2 equivalence classes. [2025-02-08 09:00:53,335 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 1065 of 1065 statements. [2025-02-08 09:00:53,335 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 09:00:53,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:00:53,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 217 conjuncts are in the unsatisfiable core [2025-02-08 09:00:53,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:00:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2025-02-08 09:00:54,124 INFO L312 TraceCheckSpWp]: Computing backward predicates...