./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 11:27:23,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 11:27:24,015 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 11:27:24,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 11:27:24,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 11:27:24,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 11:27:24,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 11:27:24,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 11:27:24,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 11:27:24,044 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 11:27:24,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 11:27:24,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 11:27:24,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 11:27:24,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 11:27:24,045 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 11:27:24,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 11:27:24,046 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 11:27:24,047 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:27:24,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 11:27:24,047 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 11:27:24,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 11:27:24,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 11:27:24,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 11:27:24,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 11:27:24,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 11:27:24,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 11:27:24,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 11:27:24,048 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/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2025-03-04 11:27:24,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 11:27:24,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 11:27:24,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 11:27:24,295 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 11:27:24,296 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 11:27:24,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci03.c [2025-03-04 11:27:25,421 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42296b4/35373d2c86604a15b212b555417d76b3/FLAGc7b3cec8f [2025-03-04 11:27:25,658 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 11:27:25,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci03.c [2025-03-04 11:27:25,664 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42296b4/35373d2c86604a15b212b555417d76b3/FLAGc7b3cec8f [2025-03-04 11:27:25,683 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef42296b4/35373d2c86604a15b212b555417d76b3 [2025-03-04 11:27:25,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 11:27:25,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 11:27:25,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 11:27:25,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 11:27:25,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 11:27:25,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc416df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25, skipping insertion in model container [2025-03-04 11:27:25,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 11:27:25,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:27:25,821 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 11:27:25,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:27:25,842 INFO L204 MainTranslator]: Completed translation [2025-03-04 11:27:25,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25 WrapperNode [2025-03-04 11:27:25,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 11:27:25,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 11:27:25,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 11:27:25,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 11:27:25,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,864 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-03-04 11:27:25,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 11:27:25,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 11:27:25,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 11:27:25,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 11:27:25,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,881 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]. [2025-03-04 11:27:25,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,884 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 11:27:25,890 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 11:27:25,890 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 11:27:25,890 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 11:27:25,891 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (1/1) ... [2025-03-04 11:27:25,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:27:25,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:25,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 11:27:25,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 11:27:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2025-03-04 11:27:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2025-03-04 11:27:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 11:27:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 11:27:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 11:27:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 11:27:25,981 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 11:27:25,982 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 11:27:26,065 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: havoc #t~ret4;havoc #t~ret5; [2025-03-04 11:27:26,109 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-04 11:27:26,110 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 11:27:26,120 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 11:27:26,120 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 11:27:26,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:27:26 BoogieIcfgContainer [2025-03-04 11:27:26,121 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 11:27:26,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 11:27:26,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 11:27:26,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 11:27:26,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 11:27:25" (1/3) ... [2025-03-04 11:27:26,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d5d97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:27:26, skipping insertion in model container [2025-03-04 11:27:26,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:27:25" (2/3) ... [2025-03-04 11:27:26,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d5d97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:27:26, skipping insertion in model container [2025-03-04 11:27:26,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:27:26" (3/3) ... [2025-03-04 11:27:26,129 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2025-03-04 11:27:26,141 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 11:27:26,143 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci03.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-03-04 11:27:26,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 11:27:26,186 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;@7200eee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 11:27:26,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 11:27:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 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) [2025-03-04 11:27:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 11:27:26,194 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:26,194 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:27:26,194 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:26,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 154990982, now seen corresponding path program 1 times [2025-03-04 11:27:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:26,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224124064] [2025-03-04 11:27:26,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:26,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:26,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 11:27:26,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 11:27:26,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:26,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:27:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224124064] [2025-03-04 11:27:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224124064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:27:26,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:27:26,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 11:27:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88414037] [2025-03-04 11:27:26,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:27:26,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 11:27:26,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:26,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 11:27:26,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 11:27:26,347 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 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 3.5) 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) [2025-03-04 11:27:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:26,389 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2025-03-04 11:27:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 11:27:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2025-03-04 11:27:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:26,397 INFO L225 Difference]: With dead ends: 37 [2025-03-04 11:27:26,398 INFO L226 Difference]: Without dead ends: 25 [2025-03-04 11:27:26,401 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 [2025-03-04 11:27:26,403 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 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 [2025-03-04 11:27:26,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:27:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-04 11:27:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2025-03-04 11:27:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 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) [2025-03-04 11:27:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2025-03-04 11:27:26,433 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2025-03-04 11:27:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:26,434 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2025-03-04 11:27:26,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2025-03-04 11:27:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2025-03-04 11:27:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 11:27:26,436 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:26,436 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:27:26,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 11:27:26,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:26,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash 509753131, now seen corresponding path program 1 times [2025-03-04 11:27:26,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:26,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208853159] [2025-03-04 11:27:26,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:26,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 11:27:26,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 11:27:26,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:26,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:27:26,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:26,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208853159] [2025-03-04 11:27:26,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208853159] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:27:26,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:27:26,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:27:26,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891889432] [2025-03-04 11:27:26,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:27:26,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:27:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:26,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:27:26,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:27:26,516 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-03-04 11:27:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:26,570 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2025-03-04 11:27:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:27:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2025-03-04 11:27:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:26,571 INFO L225 Difference]: With dead ends: 25 [2025-03-04 11:27:26,571 INFO L226 Difference]: Without dead ends: 23 [2025-03-04 11:27:26,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:27:26,572 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:26,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:27:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-04 11:27:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2025-03-04 11:27:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 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) [2025-03-04 11:27:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2025-03-04 11:27:26,579 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2025-03-04 11:27:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:26,579 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2025-03-04 11:27:26,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-03-04 11:27:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2025-03-04 11:27:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-04 11:27:26,580 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:26,580 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] [2025-03-04 11:27:26,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 11:27:26,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:26,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash -984405394, now seen corresponding path program 1 times [2025-03-04 11:27:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593564271] [2025-03-04 11:27:26,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:26,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 11:27:26,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 11:27:26,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:26,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 11:27:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593564271] [2025-03-04 11:27:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593564271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:27:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:27:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:27:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451277210] [2025-03-04 11:27:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:27:26,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:27:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:26,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:27:26,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:27:26,703 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:27:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:26,749 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2025-03-04 11:27:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:27:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-03-04 11:27:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:26,751 INFO L225 Difference]: With dead ends: 35 [2025-03-04 11:27:26,751 INFO L226 Difference]: Without dead ends: 33 [2025-03-04 11:27:26,751 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 [2025-03-04 11:27:26,751 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:26,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:27:26,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-03-04 11:27:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2025-03-04 11:27:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 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) [2025-03-04 11:27:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-03-04 11:27:26,759 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2025-03-04 11:27:26,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:26,759 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-03-04 11:27:26,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:27:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-03-04 11:27:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-04 11:27:26,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:26,760 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] [2025-03-04 11:27:26,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 11:27:26,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:26,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:26,761 INFO L85 PathProgramCache]: Analyzing trace with hash -119709208, now seen corresponding path program 1 times [2025-03-04 11:27:26,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:26,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729406570] [2025-03-04 11:27:26,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:26,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:26,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-04 11:27:26,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 11:27:26,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:26,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-04 11:27:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729406570] [2025-03-04 11:27:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729406570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662546206] [2025-03-04 11:27:26,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:26,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:26,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:26,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 11:27:26,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-04 11:27:26,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 11:27:26,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:26,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:26,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 11:27:26,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-04 11:27:27,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-04 11:27:27,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662546206] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:27,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:27,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-04 11:27:27,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724263350] [2025-03-04 11:27:27,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:27,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 11:27:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:27,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 11:27:27,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:27:27,139 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2025-03-04 11:27:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:27,341 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2025-03-04 11:27:27,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 11:27:27,341 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 31 [2025-03-04 11:27:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:27,342 INFO L225 Difference]: With dead ends: 91 [2025-03-04 11:27:27,342 INFO L226 Difference]: Without dead ends: 65 [2025-03-04 11:27:27,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:27:27,344 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:27,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 92 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:27:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-03-04 11:27:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2025-03-04 11:27:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 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) [2025-03-04 11:27:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2025-03-04 11:27:27,352 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2025-03-04 11:27:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:27,352 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2025-03-04 11:27:27,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2025-03-04 11:27:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2025-03-04 11:27:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-04 11:27:27,353 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:27,354 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:27:27,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:27,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:27,558 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:27,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1220480843, now seen corresponding path program 2 times [2025-03-04 11:27:27,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:27,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224488566] [2025-03-04 11:27:27,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:27:27,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:27,567 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-04 11:27:27,571 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 11:27:27,571 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:27:27,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 11:27:27,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224488566] [2025-03-04 11:27:27,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224488566] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:27,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922582122] [2025-03-04 11:27:27,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:27:27,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:27,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:27,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 11:27:27,671 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-04 11:27:27,680 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 11:27:27,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:27:27,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:27,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 11:27:27,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 11:27:27,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:27:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922582122] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:27:27,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:27:27,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-03-04 11:27:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899174600] [2025-03-04 11:27:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:27:27,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:27:27,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:27,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:27:27,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:27:27,730 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2025-03-04 11:27:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:27,757 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2025-03-04 11:27:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:27:27,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2025-03-04 11:27:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:27,759 INFO L225 Difference]: With dead ends: 60 [2025-03-04 11:27:27,759 INFO L226 Difference]: Without dead ends: 59 [2025-03-04 11:27:27,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:27:27,760 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:27,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:27:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-03-04 11:27:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2025-03-04 11:27:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 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) [2025-03-04 11:27:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2025-03-04 11:27:27,774 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2025-03-04 11:27:27,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:27,774 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2025-03-04 11:27:27,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2025-03-04 11:27:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2025-03-04 11:27:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-04 11:27:27,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:27,775 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:27:27,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 11:27:27,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:27,976 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:27,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash -819799558, now seen corresponding path program 1 times [2025-03-04 11:27:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:27,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496726481] [2025-03-04 11:27:27,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:27,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 11:27:27,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 11:27:27,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:27,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 11:27:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496726481] [2025-03-04 11:27:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496726481] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18958545] [2025-03-04 11:27:28,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:28,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:28,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:28,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 11:27:28,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 11:27:28,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 11:27:28,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:28,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:28,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 11:27:28,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 11:27:28,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:27:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18958545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:27:28,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:27:28,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-03-04 11:27:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029143201] [2025-03-04 11:27:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:27:28,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:27:28,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:28,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:27:28,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:27:28,141 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2025-03-04 11:27:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:28,172 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2025-03-04 11:27:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:27:28,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 26 [2025-03-04 11:27:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:28,174 INFO L225 Difference]: With dead ends: 82 [2025-03-04 11:27:28,174 INFO L226 Difference]: Without dead ends: 81 [2025-03-04 11:27:28,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-04 11:27:28,174 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:28,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 71 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:27:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-04 11:27:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2025-03-04 11:27:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 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) [2025-03-04 11:27:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2025-03-04 11:27:28,192 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 26 [2025-03-04 11:27:28,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:28,192 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2025-03-04 11:27:28,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2025-03-04 11:27:28,192 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2025-03-04 11:27:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-04 11:27:28,195 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:28,196 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:27:28,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:28,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:28,396 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:28,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1588695901, now seen corresponding path program 1 times [2025-03-04 11:27:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354157362] [2025-03-04 11:27:28,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:28,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 11:27:28,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 11:27:28,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:28,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-04 11:27:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354157362] [2025-03-04 11:27:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354157362] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693847761] [2025-03-04 11:27:28,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:28,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:28,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:28,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:28,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 11:27:28,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 11:27:28,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 11:27:28,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:28,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:28,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 11:27:28,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-03-04 11:27:28,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-04 11:27:28,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693847761] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:28,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:28,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-03-04 11:27:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213787753] [2025-03-04 11:27:28,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:28,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 11:27:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:28,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 11:27:28,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:27:28,844 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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) [2025-03-04 11:27:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:29,021 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2025-03-04 11:27:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 11:27:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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 52 [2025-03-04 11:27:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:29,023 INFO L225 Difference]: With dead ends: 141 [2025-03-04 11:27:29,023 INFO L226 Difference]: Without dead ends: 139 [2025-03-04 11:27:29,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:27:29,025 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:29,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:27:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-03-04 11:27:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2025-03-04 11:27:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 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) [2025-03-04 11:27:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2025-03-04 11:27:29,047 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 52 [2025-03-04 11:27:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:29,047 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2025-03-04 11:27:29,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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) [2025-03-04 11:27:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2025-03-04 11:27:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-04 11:27:29,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:29,049 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, 1] [2025-03-04 11:27:29,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:29,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:29,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:29,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash 993600403, now seen corresponding path program 1 times [2025-03-04 11:27:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:29,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601781765] [2025-03-04 11:27:29,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:29,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:29,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-04 11:27:29,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-04 11:27:29,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:29,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-04 11:27:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601781765] [2025-03-04 11:27:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601781765] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363598839] [2025-03-04 11:27:29,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:27:29,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:29,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:29,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:29,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 11:27:29,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-04 11:27:29,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-04 11:27:29,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:29,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:29,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 11:27:29,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-04 11:27:29,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-03-04 11:27:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363598839] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:29,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:29,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 18 [2025-03-04 11:27:29,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146411956] [2025-03-04 11:27:29,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:29,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 11:27:29,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:29,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 11:27:29,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-03-04 11:27:29,691 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 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) [2025-03-04 11:27:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:30,196 INFO L93 Difference]: Finished difference Result 257 states and 504 transitions. [2025-03-04 11:27:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-04 11:27:30,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 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 63 [2025-03-04 11:27:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:30,199 INFO L225 Difference]: With dead ends: 257 [2025-03-04 11:27:30,199 INFO L226 Difference]: Without dead ends: 163 [2025-03-04 11:27:30,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1473, Unknown=0, NotChecked=0, Total=1892 [2025-03-04 11:27:30,203 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 94 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:30,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 106 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:27:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-03-04 11:27:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 103. [2025-03-04 11:27:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 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) [2025-03-04 11:27:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 171 transitions. [2025-03-04 11:27:30,238 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 171 transitions. Word has length 63 [2025-03-04 11:27:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:30,239 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 171 transitions. [2025-03-04 11:27:30,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 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) [2025-03-04 11:27:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 171 transitions. [2025-03-04 11:27:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-03-04 11:27:30,243 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:30,243 INFO L218 NwaCegarLoop]: trace histogram [20, 17, 15, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 7, 5, 5, 1, 1, 1, 1, 1] [2025-03-04 11:27:30,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 11:27:30,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:30,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:30,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:30,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1487466844, now seen corresponding path program 2 times [2025-03-04 11:27:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642502199] [2025-03-04 11:27:30,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:27:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:30,454 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-03-04 11:27:30,474 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-03-04 11:27:30,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:27:30,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 123 proven. 424 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2025-03-04 11:27:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642502199] [2025-03-04 11:27:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642502199] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648582539] [2025-03-04 11:27:30,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:27:30,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:30,743 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:30,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 11:27:30,780 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-03-04 11:27:30,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-03-04 11:27:30,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:27:30,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:30,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:27:30,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 670 proven. 177 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2025-03-04 11:27:30,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 144 proven. 495 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2025-03-04 11:27:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648582539] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:31,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 19 [2025-03-04 11:27:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710458198] [2025-03-04 11:27:31,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:31,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 11:27:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:31,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 11:27:31,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-03-04 11:27:31,381 INFO L87 Difference]: Start difference. First operand 103 states and 171 transitions. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2025-03-04 11:27:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:31,582 INFO L93 Difference]: Finished difference Result 204 states and 359 transitions. [2025-03-04 11:27:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:27:31,583 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) Word has length 183 [2025-03-04 11:27:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:31,584 INFO L225 Difference]: With dead ends: 204 [2025-03-04 11:27:31,585 INFO L226 Difference]: Without dead ends: 105 [2025-03-04 11:27:31,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 357 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2025-03-04 11:27:31,590 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 108 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:31,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 95 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:27:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-04 11:27:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2025-03-04 11:27:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 72 states have internal predecessors, (82), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (36), 15 states have call predecessors, (36), 9 states have call successors, (36) [2025-03-04 11:27:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2025-03-04 11:27:31,605 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 183 [2025-03-04 11:27:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:31,605 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2025-03-04 11:27:31,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2025-03-04 11:27:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2025-03-04 11:27:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-04 11:27:31,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:31,607 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2025-03-04 11:27:31,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 11:27:31,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:31,808 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:31,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:31,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1395088361, now seen corresponding path program 3 times [2025-03-04 11:27:31,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:31,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565326692] [2025-03-04 11:27:31,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:27:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:31,812 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 85 statements into 7 equivalence classes. [2025-03-04 11:27:31,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 85 statements. [2025-03-04 11:27:31,815 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 11:27:31,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-04 11:27:31,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565326692] [2025-03-04 11:27:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565326692] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:27:31,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:27:31,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:27:31,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211977486] [2025-03-04 11:27:31,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:27:31,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:27:31,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:31,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:27:31,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:27:31,839 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 11:27:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:31,854 INFO L93 Difference]: Finished difference Result 101 states and 135 transitions. [2025-03-04 11:27:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:27:31,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 85 [2025-03-04 11:27:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:31,855 INFO L225 Difference]: With dead ends: 101 [2025-03-04 11:27:31,855 INFO L226 Difference]: Without dead ends: 100 [2025-03-04 11:27:31,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:27:31,856 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:31,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:27:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-04 11:27:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2025-03-04 11:27:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 72 states have internal predecessors, (82), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (36), 15 states have call predecessors, (36), 9 states have call successors, (36) [2025-03-04 11:27:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2025-03-04 11:27:31,863 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 85 [2025-03-04 11:27:31,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:31,863 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2025-03-04 11:27:31,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 11:27:31,864 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2025-03-04 11:27:31,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-04 11:27:31,864 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:31,864 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2025-03-04 11:27:31,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 11:27:31,865 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:31,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:31,865 INFO L85 PathProgramCache]: Analyzing trace with hash 113570571, now seen corresponding path program 4 times [2025-03-04 11:27:31,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:31,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801270198] [2025-03-04 11:27:31,865 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:27:31,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:31,869 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-03-04 11:27:31,872 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 55 of 92 statements. [2025-03-04 11:27:31,872 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:27:31,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 96 proven. 48 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-04 11:27:31,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:31,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801270198] [2025-03-04 11:27:31,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801270198] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:31,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479402996] [2025-03-04 11:27:31,952 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:27:31,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:31,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:31,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:31,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 11:27:31,977 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-03-04 11:27:31,987 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 55 of 92 statements. [2025-03-04 11:27:31,987 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:27:31,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:31,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 11:27:31,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 142 proven. 37 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-04 11:27:32,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 104 proven. 62 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-03-04 11:27:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479402996] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:32,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 16 [2025-03-04 11:27:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749890200] [2025-03-04 11:27:32,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:32,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 11:27:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:32,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 11:27:32,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:27:32,383 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 9 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-03-04 11:27:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:32,482 INFO L93 Difference]: Finished difference Result 157 states and 219 transitions. [2025-03-04 11:27:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 11:27:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 9 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 92 [2025-03-04 11:27:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:32,483 INFO L225 Difference]: With dead ends: 157 [2025-03-04 11:27:32,483 INFO L226 Difference]: Without dead ends: 67 [2025-03-04 11:27:32,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 175 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:27:32,484 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:32,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 89 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:27:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-03-04 11:27:32,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2025-03-04 11:27:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 50 states have internal predecessors, (55), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2025-03-04 11:27:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2025-03-04 11:27:32,491 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 92 [2025-03-04 11:27:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:32,491 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2025-03-04 11:27:32,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 9 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-03-04 11:27:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2025-03-04 11:27:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2025-03-04 11:27:32,494 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:32,494 INFO L218 NwaCegarLoop]: trace histogram [30, 27, 24, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 12, 9, 6, 1, 1, 1, 1, 1] [2025-03-04 11:27:32,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 11:27:32,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:32,695 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:32,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:32,695 INFO L85 PathProgramCache]: Analyzing trace with hash -533607947, now seen corresponding path program 5 times [2025-03-04 11:27:32,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:32,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422963085] [2025-03-04 11:27:32,695 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:27:32,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:32,702 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 282 statements into 21 equivalence classes. [2025-03-04 11:27:32,724 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 132 of 282 statements. [2025-03-04 11:27:32,724 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-04 11:27:32,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 338 proven. 786 refuted. 0 times theorem prover too weak. 1637 trivial. 0 not checked. [2025-03-04 11:27:32,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:32,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422963085] [2025-03-04 11:27:32,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422963085] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:32,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206658109] [2025-03-04 11:27:32,897 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:27:32,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:32,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:32,899 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:32,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 11:27:32,938 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 282 statements into 21 equivalence classes. [2025-03-04 11:27:32,975 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 132 of 282 statements. [2025-03-04 11:27:32,975 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-04 11:27:32,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:32,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-04 11:27:32,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 1521 proven. 384 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2025-03-04 11:27:33,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 339 proven. 794 refuted. 0 times theorem prover too weak. 1628 trivial. 0 not checked. [2025-03-04 11:27:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206658109] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:33,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:33,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 15] total 21 [2025-03-04 11:27:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148134260] [2025-03-04 11:27:33,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:33,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 11:27:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:33,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 11:27:33,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:27:33,649 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 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) [2025-03-04 11:27:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:33,864 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2025-03-04 11:27:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:27:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 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 282 [2025-03-04 11:27:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:33,865 INFO L225 Difference]: With dead ends: 152 [2025-03-04 11:27:33,865 INFO L226 Difference]: Without dead ends: 93 [2025-03-04 11:27:33,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 554 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 11:27:33,867 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 113 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:33,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 102 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:27:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-04 11:27:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2025-03-04 11:27:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 64 states have (on average 1.0625) internal successors, (68), 62 states have internal predecessors, (68), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2025-03-04 11:27:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2025-03-04 11:27:33,874 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 282 [2025-03-04 11:27:33,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:33,874 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2025-03-04 11:27:33,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 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) [2025-03-04 11:27:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2025-03-04 11:27:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-04 11:27:33,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:33,875 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1] [2025-03-04 11:27:33,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:34,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-04 11:27:34,079 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:34,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1715536077, now seen corresponding path program 6 times [2025-03-04 11:27:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451876247] [2025-03-04 11:27:34,080 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:27:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:34,084 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 130 statements into 9 equivalence classes. [2025-03-04 11:27:34,095 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 130 of 130 statements. [2025-03-04 11:27:34,095 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-04 11:27:34,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 183 proven. 132 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2025-03-04 11:27:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451876247] [2025-03-04 11:27:34,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451876247] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801240837] [2025-03-04 11:27:34,215 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:27:34,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:34,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:34,217 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:34,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 11:27:34,249 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 130 statements into 9 equivalence classes. [2025-03-04 11:27:34,284 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 130 of 130 statements. [2025-03-04 11:27:34,284 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-04 11:27:34,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:34,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 11:27:34,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 61 proven. 95 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2025-03-04 11:27:34,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 103 proven. 95 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2025-03-04 11:27:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801240837] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:35,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:35,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 33 [2025-03-04 11:27:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34474952] [2025-03-04 11:27:35,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:35,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-04 11:27:35,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:35,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-04 11:27:35,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 11:27:35,288 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) [2025-03-04 11:27:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:35,797 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2025-03-04 11:27:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-04 11:27:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) Word has length 130 [2025-03-04 11:27:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:35,799 INFO L225 Difference]: With dead ends: 203 [2025-03-04 11:27:35,799 INFO L226 Difference]: Without dead ends: 123 [2025-03-04 11:27:35,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 231 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=501, Invalid=2469, Unknown=0, NotChecked=0, Total=2970 [2025-03-04 11:27:35,802 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 97 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:35,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 143 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:27:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-04 11:27:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 98. [2025-03-04 11:27:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 77 states have internal predecessors, (82), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2025-03-04 11:27:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2025-03-04 11:27:35,815 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 130 [2025-03-04 11:27:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:35,815 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2025-03-04 11:27:35,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) [2025-03-04 11:27:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2025-03-04 11:27:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-04 11:27:35,819 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:35,819 INFO L218 NwaCegarLoop]: trace histogram [32, 30, 26, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1, 1] [2025-03-04 11:27:35,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:36,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-04 11:27:36,024 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:36,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash -200525822, now seen corresponding path program 7 times [2025-03-04 11:27:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:36,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612063113] [2025-03-04 11:27:36,025 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:27:36,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:36,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-04 11:27:36,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-04 11:27:36,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:36,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 521 proven. 1076 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2025-03-04 11:27:36,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612063113] [2025-03-04 11:27:36,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612063113] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543721433] [2025-03-04 11:27:36,358 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:27:36,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:36,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:36,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:36,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 11:27:36,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-04 11:27:36,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-04 11:27:36,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:27:36,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:36,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 11:27:36,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 613 proven. 1181 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2025-03-04 11:27:36,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 613 proven. 1253 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2025-03-04 11:27:37,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543721433] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:37,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:37,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2025-03-04 11:27:37,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974797797] [2025-03-04 11:27:37,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:37,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 11:27:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:37,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 11:27:37,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2025-03-04 11:27:37,848 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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) [2025-03-04 11:27:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:38,196 INFO L93 Difference]: Finished difference Result 236 states and 312 transitions. [2025-03-04 11:27:38,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-04 11:27:38,196 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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 307 [2025-03-04 11:27:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:38,198 INFO L225 Difference]: With dead ends: 236 [2025-03-04 11:27:38,198 INFO L226 Difference]: Without dead ends: 144 [2025-03-04 11:27:38,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 599 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=604, Invalid=1748, Unknown=0, NotChecked=0, Total=2352 [2025-03-04 11:27:38,199 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 217 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:38,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 144 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:27:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-03-04 11:27:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 122. [2025-03-04 11:27:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 95 states have internal predecessors, (104), 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) [2025-03-04 11:27:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2025-03-04 11:27:38,209 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 307 [2025-03-04 11:27:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:38,210 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2025-03-04 11:27:38,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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) [2025-03-04 11:27:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2025-03-04 11:27:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-04 11:27:38,213 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:38,213 INFO L218 NwaCegarLoop]: trace histogram [32, 30, 26, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1, 1] [2025-03-04 11:27:38,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:38,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-04 11:27:38,415 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:38,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash -449393690, now seen corresponding path program 8 times [2025-03-04 11:27:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:38,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216143334] [2025-03-04 11:27:38,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:27:38,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:38,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 307 statements into 2 equivalence classes. [2025-03-04 11:27:38,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-03-04 11:27:38,448 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:27:38,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 554 proven. 990 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2025-03-04 11:27:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:38,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216143334] [2025-03-04 11:27:38,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216143334] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:38,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107546630] [2025-03-04 11:27:38,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:27:38,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:38,724 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:38,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 11:27:38,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 307 statements into 2 equivalence classes. [2025-03-04 11:27:38,823 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-03-04 11:27:38,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:27:38,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:38,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 11:27:38,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1858 proven. 484 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2025-03-04 11:27:38,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 551 proven. 1101 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2025-03-04 11:27:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107546630] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:39,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:39,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2025-03-04 11:27:39,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666306080] [2025-03-04 11:27:39,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:39,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 11:27:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:39,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 11:27:39,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:27:39,985 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2025-03-04 11:27:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:40,218 INFO L93 Difference]: Finished difference Result 235 states and 300 transitions. [2025-03-04 11:27:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 11:27:40,219 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) Word has length 307 [2025-03-04 11:27:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:40,220 INFO L225 Difference]: With dead ends: 235 [2025-03-04 11:27:40,220 INFO L226 Difference]: Without dead ends: 119 [2025-03-04 11:27:40,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 601 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:27:40,221 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 72 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:40,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 156 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:27:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-03-04 11:27:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2025-03-04 11:27:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 84 states have internal predecessors, (89), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2025-03-04 11:27:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2025-03-04 11:27:40,230 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 307 [2025-03-04 11:27:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:40,230 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2025-03-04 11:27:40,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2025-03-04 11:27:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2025-03-04 11:27:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2025-03-04 11:27:40,234 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:40,235 INFO L218 NwaCegarLoop]: trace histogram [52, 50, 42, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 24, 16, 10, 1, 1, 1, 1, 1] [2025-03-04 11:27:40,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:40,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-04 11:27:40,436 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:40,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:40,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1956513874, now seen corresponding path program 9 times [2025-03-04 11:27:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:40,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735134674] [2025-03-04 11:27:40,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:27:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:40,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 503 statements into 35 equivalence classes. [2025-03-04 11:27:40,485 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 372 of 503 statements. [2025-03-04 11:27:40,485 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-04 11:27:40,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1679 proven. 1009 refuted. 0 times theorem prover too weak. 6350 trivial. 0 not checked. [2025-03-04 11:27:40,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735134674] [2025-03-04 11:27:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735134674] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449200929] [2025-03-04 11:27:40,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:27:40,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:40,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:40,852 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:40,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 11:27:40,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 503 statements into 35 equivalence classes. [2025-03-04 11:27:40,998 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 372 of 503 statements. [2025-03-04 11:27:40,998 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-04 11:27:40,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:41,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 11:27:41,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1771 proven. 1024 refuted. 0 times theorem prover too weak. 6243 trivial. 0 not checked. [2025-03-04 11:27:41,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1779 proven. 1063 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2025-03-04 11:27:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449200929] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:42,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:42,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2025-03-04 11:27:42,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826351450] [2025-03-04 11:27:42,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:42,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 11:27:42,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:42,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 11:27:42,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:27:42,136 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 24 states, 24 states have (on average 5.416666666666667) internal successors, (130), 24 states have internal predecessors, (130), 13 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 16 states have call predecessors, (26), 13 states have call successors, (26) [2025-03-04 11:27:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:42,551 INFO L93 Difference]: Finished difference Result 298 states and 379 transitions. [2025-03-04 11:27:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-04 11:27:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.416666666666667) internal successors, (130), 24 states have internal predecessors, (130), 13 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 16 states have call predecessors, (26), 13 states have call successors, (26) Word has length 503 [2025-03-04 11:27:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:42,555 INFO L225 Difference]: With dead ends: 298 [2025-03-04 11:27:42,555 INFO L226 Difference]: Without dead ends: 171 [2025-03-04 11:27:42,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1053 GetRequests, 997 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=633, Invalid=1719, Unknown=0, NotChecked=0, Total=2352 [2025-03-04 11:27:42,557 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 254 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:42,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 132 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:27:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-03-04 11:27:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 137. [2025-03-04 11:27:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 111 states have (on average 1.045045045045045) internal successors, (116), 108 states have internal predecessors, (116), 17 states have call successors, (17), 14 states have call predecessors, (17), 8 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2025-03-04 11:27:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2025-03-04 11:27:42,568 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 503 [2025-03-04 11:27:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:42,568 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2025-03-04 11:27:42,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.416666666666667) internal successors, (130), 24 states have internal predecessors, (130), 13 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 16 states have call predecessors, (26), 13 states have call successors, (26) [2025-03-04 11:27:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2025-03-04 11:27:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-04 11:27:42,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:42,571 INFO L218 NwaCegarLoop]: trace histogram [35, 34, 28, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 11, 7, 1, 1, 1, 1, 1] [2025-03-04 11:27:42,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 11:27:42,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-04 11:27:42,785 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:42,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1953340652, now seen corresponding path program 10 times [2025-03-04 11:27:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003751854] [2025-03-04 11:27:42,785 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:27:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:42,795 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 340 statements into 2 equivalence classes. [2025-03-04 11:27:42,805 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 201 of 340 statements. [2025-03-04 11:27:42,805 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:27:42,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 743 proven. 1095 refuted. 0 times theorem prover too weak. 2212 trivial. 0 not checked. [2025-03-04 11:27:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003751854] [2025-03-04 11:27:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003751854] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507208171] [2025-03-04 11:27:43,003 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:27:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:43,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:43,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 11:27:43,077 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 340 statements into 2 equivalence classes. [2025-03-04 11:27:43,105 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 201 of 340 statements. [2025-03-04 11:27:43,105 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:27:43,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:43,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 11:27:43,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 856 proven. 1214 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2025-03-04 11:27:43,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 856 proven. 1290 refuted. 0 times theorem prover too weak. 1904 trivial. 0 not checked. [2025-03-04 11:27:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507208171] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:44,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:44,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2025-03-04 11:27:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042042698] [2025-03-04 11:27:44,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:44,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 11:27:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:44,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 11:27:44,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2025-03-04 11:27:44,402 INFO L87 Difference]: Start difference. First operand 137 states and 171 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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) [2025-03-04 11:27:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:44,704 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2025-03-04 11:27:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-04 11:27:44,704 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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 340 [2025-03-04 11:27:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:44,706 INFO L225 Difference]: With dead ends: 286 [2025-03-04 11:27:44,706 INFO L226 Difference]: Without dead ends: 155 [2025-03-04 11:27:44,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 663 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=480, Invalid=1326, Unknown=0, NotChecked=0, Total=1806 [2025-03-04 11:27:44,707 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 119 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:44,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 213 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:27:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-04 11:27:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 146. [2025-03-04 11:27:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 116 states have internal predecessors, (122), 19 states have call successors, (19), 16 states have call predecessors, (19), 8 states have return successors, (38), 13 states have call predecessors, (38), 18 states have call successors, (38) [2025-03-04 11:27:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2025-03-04 11:27:44,716 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 340 [2025-03-04 11:27:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:44,717 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2025-03-04 11:27:44,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 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) [2025-03-04 11:27:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2025-03-04 11:27:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2025-03-04 11:27:44,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:44,720 INFO L218 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1, 1] [2025-03-04 11:27:44,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:44,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-04 11:27:44,920 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:44,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1806187615, now seen corresponding path program 11 times [2025-03-04 11:27:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869772257] [2025-03-04 11:27:44,921 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:27:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:44,929 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 399 statements into 29 equivalence classes. [2025-03-04 11:27:44,956 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) and asserted 399 of 399 statements. [2025-03-04 11:27:44,956 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2025-03-04 11:27:44,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 936 proven. 1467 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2025-03-04 11:27:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869772257] [2025-03-04 11:27:46,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869772257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333286104] [2025-03-04 11:27:46,955 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:27:46,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:46,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:46,957 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:46,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 11:27:47,040 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 399 statements into 29 equivalence classes. [2025-03-04 11:27:47,116 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) and asserted 399 of 399 statements. [2025-03-04 11:27:47,116 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2025-03-04 11:27:47,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:47,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-03-04 11:27:47,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:27:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2025-03-04 11:27:47,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:27:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2025-03-04 11:27:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333286104] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:27:52,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:27:52,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 29] total 47 [2025-03-04 11:27:52,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232746149] [2025-03-04 11:27:52,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:27:52,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-04 11:27:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:27:52,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-04 11:27:52,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2025-03-04 11:27:52,295 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 48 states have internal predecessors, (125), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2025-03-04 11:27:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:27:52,460 INFO L93 Difference]: Finished difference Result 177 states and 233 transitions. [2025-03-04 11:27:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-04 11:27:52,460 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 48 states have internal predecessors, (125), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) Word has length 399 [2025-03-04 11:27:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:27:52,462 INFO L225 Difference]: With dead ends: 177 [2025-03-04 11:27:52,462 INFO L226 Difference]: Without dead ends: 176 [2025-03-04 11:27:52,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 776 SyntacticMatches, 55 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=613, Invalid=2039, Unknown=0, NotChecked=0, Total=2652 [2025-03-04 11:27:52,463 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:27:52,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 217 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:27:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-03-04 11:27:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2025-03-04 11:27:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 135 states have (on average 1.0296296296296297) internal successors, (139), 132 states have internal predecessors, (139), 21 states have call successors, (21), 16 states have call predecessors, (21), 10 states have return successors, (58), 18 states have call predecessors, (58), 20 states have call successors, (58) [2025-03-04 11:27:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 218 transitions. [2025-03-04 11:27:52,476 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 218 transitions. Word has length 399 [2025-03-04 11:27:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:27:52,477 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 218 transitions. [2025-03-04 11:27:52,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 48 states have internal predecessors, (125), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2025-03-04 11:27:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 218 transitions. [2025-03-04 11:27:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2025-03-04 11:27:52,481 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:27:52,481 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, 1] [2025-03-04 11:27:52,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 11:27:52,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:52,681 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:27:52,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:27:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 412250085, now seen corresponding path program 12 times [2025-03-04 11:27:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:27:52,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912191527] [2025-03-04 11:27:52,682 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:27:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:27:52,696 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 811 statements into 64 equivalence classes. [2025-03-04 11:27:52,788 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) and asserted 775 of 811 statements. [2025-03-04 11:27:52,788 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2025-03-04 11:27:52,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:27:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4072 proven. 5882 refuted. 0 times theorem prover too weak. 13905 trivial. 0 not checked. [2025-03-04 11:27:59,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:27:59,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912191527] [2025-03-04 11:27:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912191527] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:27:59,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899557469] [2025-03-04 11:27:59,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:27:59,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:27:59,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:27:59,946 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:27:59,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 11:28:00,117 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 811 statements into 64 equivalence classes. [2025-03-04 11:28:00,265 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) and asserted 775 of 811 statements. [2025-03-04 11:28:00,265 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2025-03-04 11:28:00,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:00,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 165 conjuncts are in the unsatisfiable core [2025-03-04 11:28:00,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 3732 proven. 4596 refuted. 0 times theorem prover too weak. 15531 trivial. 0 not checked. [2025-03-04 11:28:00,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4599 proven. 4261 refuted. 0 times theorem prover too weak. 14999 trivial. 0 not checked. [2025-03-04 11:28:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899557469] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:18,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:18,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 38] total 52 [2025-03-04 11:28:18,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451958325] [2025-03-04 11:28:18,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:18,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-04 11:28:18,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:18,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-04 11:28:18,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=2149, Unknown=0, NotChecked=0, Total=2756 [2025-03-04 11:28:18,238 INFO L87 Difference]: Start difference. First operand 167 states and 218 transitions. Second operand has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 53 states have internal predecessors, (136), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 14 states have call successors, (36) [2025-03-04 11:28:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:18,496 INFO L93 Difference]: Finished difference Result 225 states and 329 transitions. [2025-03-04 11:28:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-04 11:28:18,497 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 53 states have internal predecessors, (136), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 14 states have call successors, (36) Word has length 811 [2025-03-04 11:28:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:18,499 INFO L225 Difference]: With dead ends: 225 [2025-03-04 11:28:18,499 INFO L226 Difference]: Without dead ends: 224 [2025-03-04 11:28:18,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1793 GetRequests, 1591 SyntacticMatches, 143 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=784, Invalid=2876, Unknown=0, NotChecked=0, Total=3660 [2025-03-04 11:28:18,501 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:18,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 257 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:28:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-03-04 11:28:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 185. [2025-03-04 11:28:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 146 states have internal predecessors, (153), 23 states have call successors, (23), 16 states have call predecessors, (23), 12 states have return successors, (86), 22 states have call predecessors, (86), 22 states have call successors, (86) [2025-03-04 11:28:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 262 transitions. [2025-03-04 11:28:18,513 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 262 transitions. Word has length 811 [2025-03-04 11:28:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:18,514 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 262 transitions. [2025-03-04 11:28:18,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 53 states have internal predecessors, (136), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 14 states have call successors, (36) [2025-03-04 11:28:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 262 transitions. [2025-03-04 11:28:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2025-03-04 11:28:18,524 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:18,525 INFO L218 NwaCegarLoop]: trace histogram [151, 150, 122, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 74, 47, 29, 1, 1, 1, 1, 1] [2025-03-04 11:28:18,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 11:28:18,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:18,725 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:18,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1855773326, now seen corresponding path program 13 times [2025-03-04 11:28:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224546683] [2025-03-04 11:28:18,726 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:28:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:18,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1478 statements into 1 equivalence classes. [2025-03-04 11:28:18,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1478 of 1478 statements. [2025-03-04 11:28:18,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:18,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 2828 proven. 11650 refuted. 0 times theorem prover too weak. 65653 trivial. 0 not checked. [2025-03-04 11:28:20,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224546683] [2025-03-04 11:28:20,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224546683] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321155615] [2025-03-04 11:28:20,959 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:28:20,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:20,961 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:20,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 11:28:21,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1478 statements into 1 equivalence classes. [2025-03-04 11:28:21,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1478 of 1478 statements. [2025-03-04 11:28:21,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:21,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:21,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-04 11:28:21,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 3345 proven. 13356 refuted. 0 times theorem prover too weak. 63430 trivial. 0 not checked. [2025-03-04 11:28:21,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 3345 proven. 13524 refuted. 0 times theorem prover too weak. 63262 trivial. 0 not checked. [2025-03-04 11:28:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321155615] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:25,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:25,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2025-03-04 11:28:25,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925201445] [2025-03-04 11:28:25,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:25,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-04 11:28:25,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:25,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-04 11:28:25,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:28:25,061 INFO L87 Difference]: Start difference. First operand 185 states and 262 transitions. Second operand has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) [2025-03-04 11:28:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:25,588 INFO L93 Difference]: Finished difference Result 437 states and 714 transitions. [2025-03-04 11:28:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-04 11:28:25,589 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) Word has length 1478 [2025-03-04 11:28:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:25,592 INFO L225 Difference]: With dead ends: 437 [2025-03-04 11:28:25,592 INFO L226 Difference]: Without dead ends: 258 [2025-03-04 11:28:25,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3017 GetRequests, 2937 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2025-03-04 11:28:25,595 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 492 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:25,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 248 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:28:25,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2025-03-04 11:28:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 221. [2025-03-04 11:28:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 178 states have (on average 1.0280898876404494) internal successors, (183), 174 states have internal predecessors, (183), 27 states have call successors, (27), 17 states have call predecessors, (27), 15 states have return successors, (108), 29 states have call predecessors, (108), 26 states have call successors, (108) [2025-03-04 11:28:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 318 transitions. [2025-03-04 11:28:25,608 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 318 transitions. Word has length 1478 [2025-03-04 11:28:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:25,609 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 318 transitions. [2025-03-04 11:28:25,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) [2025-03-04 11:28:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 318 transitions. [2025-03-04 11:28:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1950 [2025-03-04 11:28:25,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:25,625 INFO L218 NwaCegarLoop]: trace histogram [199, 198, 161, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 98, 62, 38, 1, 1, 1, 1, 1] [2025-03-04 11:28:25,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 11:28:25,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:25,826 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:25,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash 522897199, now seen corresponding path program 14 times [2025-03-04 11:28:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:25,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274518318] [2025-03-04 11:28:25,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:25,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1949 statements into 2 equivalence classes. [2025-03-04 11:28:25,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1949 of 1949 statements. [2025-03-04 11:28:25,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:25,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 139798 backedges. 3981 proven. 17419 refuted. 0 times theorem prover too weak. 118398 trivial. 0 not checked. [2025-03-04 11:28:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274518318] [2025-03-04 11:28:29,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274518318] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762844274] [2025-03-04 11:28:29,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:29,044 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:29,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 11:28:29,403 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1949 statements into 2 equivalence classes. [2025-03-04 11:28:29,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1949 of 1949 statements. [2025-03-04 11:28:29,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:29,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:29,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 11:28:29,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 139798 backedges. 60112 proven. 2667 refuted. 0 times theorem prover too weak. 77019 trivial. 0 not checked. [2025-03-04 11:28:29,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 139798 backedges. 3424 proven. 18176 refuted. 0 times theorem prover too weak. 118198 trivial. 0 not checked. [2025-03-04 11:28:34,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762844274] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:34,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:34,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 27] total 29 [2025-03-04 11:28:34,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746710311] [2025-03-04 11:28:34,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:34,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-04 11:28:34,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:34,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-04 11:28:34,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2025-03-04 11:28:34,448 INFO L87 Difference]: Start difference. First operand 221 states and 318 transitions. Second operand has 29 states, 29 states have (on average 6.344827586206897) internal successors, (184), 29 states have internal predecessors, (184), 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) [2025-03-04 11:28:34,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:34,773 INFO L93 Difference]: Finished difference Result 418 states and 639 transitions. [2025-03-04 11:28:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-04 11:28:34,773 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.344827586206897) internal successors, (184), 29 states have internal predecessors, (184), 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 1949 [2025-03-04 11:28:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:34,775 INFO L225 Difference]: With dead ends: 418 [2025-03-04 11:28:34,775 INFO L226 Difference]: Without dead ends: 203 [2025-03-04 11:28:34,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3942 GetRequests, 3884 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=560, Invalid=1602, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 11:28:34,778 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 199 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:34,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 252 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:28:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-04 11:28:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 167. [2025-03-04 11:28:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 132 states have internal predecessors, (137), 21 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (67), 20 states have call predecessors, (67), 20 states have call successors, (67) [2025-03-04 11:28:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2025-03-04 11:28:34,789 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 1949 [2025-03-04 11:28:34,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:34,790 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2025-03-04 11:28:34,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.344827586206897) internal successors, (184), 29 states have internal predecessors, (184), 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) [2025-03-04 11:28:34,790 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2025-03-04 11:28:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1328 [2025-03-04 11:28:34,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:34,798 INFO L218 NwaCegarLoop]: trace histogram [136, 134, 110, 68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 67, 67, 66, 42, 26, 1, 1, 1, 1, 1] [2025-03-04 11:28:34,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 11:28:34,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:34,999 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:34,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1388870894, now seen corresponding path program 15 times [2025-03-04 11:28:35,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:35,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907047018] [2025-03-04 11:28:35,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:28:35,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:35,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1327 statements into 99 equivalence classes. [2025-03-04 11:28:35,092 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) and asserted 788 of 1327 statements. [2025-03-04 11:28:35,092 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2025-03-04 11:28:35,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 5135 proven. 8146 refuted. 0 times theorem prover too weak. 51207 trivial. 0 not checked. [2025-03-04 11:28:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907047018] [2025-03-04 11:28:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907047018] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656632079] [2025-03-04 11:28:35,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:28:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:35,993 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:35,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 11:28:36,388 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1327 statements into 99 equivalence classes. [2025-03-04 11:28:36,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) and asserted 788 of 1327 statements. [2025-03-04 11:28:36,544 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2025-03-04 11:28:36,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:36,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-04 11:28:36,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 5135 proven. 8146 refuted. 0 times theorem prover too weak. 51207 trivial. 0 not checked. [2025-03-04 11:28:36,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 5135 proven. 8311 refuted. 0 times theorem prover too weak. 51042 trivial. 0 not checked. [2025-03-04 11:28:39,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656632079] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:39,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:39,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 31 [2025-03-04 11:28:39,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407859739] [2025-03-04 11:28:39,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:39,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-04 11:28:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:39,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-04 11:28:39,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2025-03-04 11:28:39,739 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 23 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (38), 18 states have call predecessors, (38), 23 states have call successors, (38) [2025-03-04 11:28:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:40,355 INFO L93 Difference]: Finished difference Result 419 states and 611 transitions. [2025-03-04 11:28:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-04 11:28:40,356 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 23 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (38), 18 states have call predecessors, (38), 23 states have call successors, (38) Word has length 1327 [2025-03-04 11:28:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:40,359 INFO L225 Difference]: With dead ends: 419 [2025-03-04 11:28:40,359 INFO L226 Difference]: Without dead ends: 258 [2025-03-04 11:28:40,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2720 GetRequests, 2641 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1101, Invalid=3321, Unknown=0, NotChecked=0, Total=4422 [2025-03-04 11:28:40,364 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 459 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:40,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 204 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:28:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2025-03-04 11:28:40,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 212. [2025-03-04 11:28:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 172 states have (on average 1.0290697674418605) internal successors, (177), 168 states have internal predecessors, (177), 27 states have call successors, (27), 20 states have call predecessors, (27), 12 states have return successors, (79), 23 states have call predecessors, (79), 26 states have call successors, (79) [2025-03-04 11:28:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2025-03-04 11:28:40,387 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 1327 [2025-03-04 11:28:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:40,388 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2025-03-04 11:28:40,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 23 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (38), 18 states have call predecessors, (38), 23 states have call successors, (38) [2025-03-04 11:28:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2025-03-04 11:28:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2025-03-04 11:28:40,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:40,407 INFO L218 NwaCegarLoop]: trace histogram [145, 144, 117, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 71, 45, 28, 1, 1, 1, 1, 1] [2025-03-04 11:28:40,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 11:28:40,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:40,608 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:40,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1251749109, now seen corresponding path program 16 times [2025-03-04 11:28:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:40,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657888929] [2025-03-04 11:28:40,608 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:28:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:40,648 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1419 statements into 2 equivalence classes. [2025-03-04 11:28:40,709 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 840 of 1419 statements. [2025-03-04 11:28:40,709 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:28:40,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 73818 backedges. 8029 proven. 3643 refuted. 0 times theorem prover too weak. 62146 trivial. 0 not checked. [2025-03-04 11:28:41,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657888929] [2025-03-04 11:28:41,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657888929] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859456501] [2025-03-04 11:28:41,535 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:28:41,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:41,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:41,538 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:41,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 11:28:41,946 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1419 statements into 2 equivalence classes. [2025-03-04 11:28:42,053 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 840 of 1419 statements. [2025-03-04 11:28:42,053 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:28:42,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:42,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-04 11:28:42,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 73818 backedges. 37806 proven. 5527 refuted. 0 times theorem prover too weak. 30485 trivial. 0 not checked. [2025-03-04 11:28:42,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 73818 backedges. 5120 proven. 11737 refuted. 0 times theorem prover too weak. 56961 trivial. 0 not checked. [2025-03-04 11:28:46,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859456501] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:46,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:46,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 31] total 36 [2025-03-04 11:28:46,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201039411] [2025-03-04 11:28:46,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:46,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-04 11:28:46,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:46,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-04 11:28:46,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:28:46,828 INFO L87 Difference]: Start difference. First operand 212 states and 283 transitions. Second operand has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) [2025-03-04 11:28:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:47,222 INFO L93 Difference]: Finished difference Result 424 states and 584 transitions. [2025-03-04 11:28:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-04 11:28:47,222 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) Word has length 1419 [2025-03-04 11:28:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:47,224 INFO L225 Difference]: With dead ends: 424 [2025-03-04 11:28:47,224 INFO L226 Difference]: Without dead ends: 218 [2025-03-04 11:28:47,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2883 GetRequests, 2813 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2025-03-04 11:28:47,227 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 287 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:47,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 317 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:28:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-03-04 11:28:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 170. [2025-03-04 11:28:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 137 states have (on average 1.0218978102189782) internal successors, (140), 135 states have internal predecessors, (140), 22 states have call successors, (22), 16 states have call predecessors, (22), 10 states have return successors, (56), 18 states have call predecessors, (56), 21 states have call successors, (56) [2025-03-04 11:28:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2025-03-04 11:28:47,260 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 1419 [2025-03-04 11:28:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:47,260 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2025-03-04 11:28:47,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) [2025-03-04 11:28:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2025-03-04 11:28:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2577 [2025-03-04 11:28:47,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:47,285 INFO L218 NwaCegarLoop]: trace histogram [265, 259, 215, 134, 134, 134, 134, 130, 130, 130, 130, 130, 129, 129, 129, 128, 81, 50, 1, 1, 1, 1, 1] [2025-03-04 11:28:47,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 11:28:47,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:47,486 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:47,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1186572344, now seen corresponding path program 17 times [2025-03-04 11:28:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:47,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314336641] [2025-03-04 11:28:47,488 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:28:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:47,523 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 2576 statements into 191 equivalence classes. [2025-03-04 11:28:47,839 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 163 check-sat command(s) and asserted 2186 of 2576 statements. [2025-03-04 11:28:47,839 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 163 check-sat command(s) [2025-03-04 11:28:47,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat