./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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/Fibonacci05.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 42036c90cf17a9bca9878c7ba1e2de2c7beff8028a525d1b2b84e3f8cdd299d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 02:40:42,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 02:40:42,840 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 02:40:42,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 02:40:42,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 02:40:42,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 02:40:42,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 02:40:42,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 02:40:42,861 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 02:40:42,861 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 02:40:42,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 02:40:42,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 02:40:42,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 02:40:42,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 02:40:42,861 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 02:40:42,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 02:40:42,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 02:40:42,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:40:42,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 02:40:42,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 02:40:42,863 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 -> 42036c90cf17a9bca9878c7ba1e2de2c7beff8028a525d1b2b84e3f8cdd299d5 [2025-03-09 02:40:43,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 02:40:43,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 02:40:43,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 02:40:43,088 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 02:40:43,088 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 02:40:43,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci05.c [2025-03-09 02:40:44,310 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cd3030d/0dbdaa0e9a0d44bcb57edb3922e60675/FLAG0ffbcde0e [2025-03-09 02:40:44,562 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 02:40:44,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci05.c [2025-03-09 02:40:44,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cd3030d/0dbdaa0e9a0d44bcb57edb3922e60675/FLAG0ffbcde0e [2025-03-09 02:40:44,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cd3030d/0dbdaa0e9a0d44bcb57edb3922e60675 [2025-03-09 02:40:44,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 02:40:44,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 02:40:44,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 02:40:44,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 02:40:44,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 02:40:44,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e31c5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44, skipping insertion in model container [2025-03-09 02:40:44,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 02:40:44,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:40:44,751 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 02:40:44,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:40:44,772 INFO L204 MainTranslator]: Completed translation [2025-03-09 02:40:44,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44 WrapperNode [2025-03-09 02:40:44,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 02:40:44,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 02:40:44,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 02:40:44,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 02:40:44,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,796 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-03-09 02:40:44,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 02:40:44,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 02:40:44,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 02:40:44,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 02:40:44,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,815 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]. [2025-03-09 02:40:44,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,817 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 02:40:44,825 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 02:40:44,825 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 02:40:44,825 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 02:40:44,826 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:40:44,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:44,853 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) [2025-03-09 02:40:44,858 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 [2025-03-09 02:40:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2025-03-09 02:40:44,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2025-03-09 02:40:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 02:40:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 02:40:44,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 02:40:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 02:40:44,921 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 02:40:44,922 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 02:40:44,986 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: havoc #t~ret4;havoc #t~ret5; [2025-03-09 02:40:45,019 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-03-09 02:40:45,019 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 02:40:45,026 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 02:40:45,026 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 02:40:45,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:40:45 BoogieIcfgContainer [2025-03-09 02:40:45,026 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 02:40:45,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 02:40:45,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 02:40:45,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 02:40:45,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 02:40:44" (1/3) ... [2025-03-09 02:40:45,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8cf276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:40:45, skipping insertion in model container [2025-03-09 02:40:45,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (2/3) ... [2025-03-09 02:40:45,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8cf276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:40:45, skipping insertion in model container [2025-03-09 02:40:45,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:40:45" (3/3) ... [2025-03-09 02:40:45,035 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2025-03-09 02:40:45,045 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 02:40:45,046 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci05.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-03-09 02:40:45,087 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 02:40:45,095 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;@189a6413, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 02:40:45,095 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-09 02:40:45,099 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) [2025-03-09 02:40:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 02:40:45,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:45,103 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:45,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:45,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 154990982, now seen corresponding path program 1 times [2025-03-09 02:40:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:45,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517811547] [2025-03-09 02:40:45,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:45,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 02:40:45,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 02:40:45,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:40:45,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517811547] [2025-03-09 02:40:45,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517811547] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:45,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:40:45,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:40:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998197311] [2025-03-09 02:40:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:45,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 02:40:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:45,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 02:40:45,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:40:45,255 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) [2025-03-09 02:40:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:45,299 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2025-03-09 02:40:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 02:40:45,302 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 [2025-03-09 02:40:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:45,306 INFO L225 Difference]: With dead ends: 37 [2025-03-09 02:40:45,306 INFO L226 Difference]: Without dead ends: 25 [2025-03-09 02:40:45,310 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 [2025-03-09 02:40:45,311 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 [2025-03-09 02:40:45,314 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] [2025-03-09 02:40:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-09 02:40:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2025-03-09 02:40:45,338 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) [2025-03-09 02:40:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2025-03-09 02:40:45,345 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2025-03-09 02:40:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:45,345 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2025-03-09 02:40:45,345 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) [2025-03-09 02:40:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2025-03-09 02:40:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 02:40:45,347 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:45,347 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:45,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 02:40:45,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:45,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 509753131, now seen corresponding path program 1 times [2025-03-09 02:40:45,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:45,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627740885] [2025-03-09 02:40:45,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:45,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 02:40:45,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 02:40:45,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:40:45,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627740885] [2025-03-09 02:40:45,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627740885] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:45,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:40:45,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:40:45,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355589349] [2025-03-09 02:40:45,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:45,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:40:45,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:45,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:40:45,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:40:45,432 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) [2025-03-09 02:40:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:45,486 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2025-03-09 02:40:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:40:45,487 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 [2025-03-09 02:40:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:45,487 INFO L225 Difference]: With dead ends: 25 [2025-03-09 02:40:45,487 INFO L226 Difference]: Without dead ends: 23 [2025-03-09 02:40:45,487 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 [2025-03-09 02:40:45,488 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 [2025-03-09 02:40:45,488 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] [2025-03-09 02:40:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-09 02:40:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2025-03-09 02:40:45,493 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) [2025-03-09 02:40:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2025-03-09 02:40:45,496 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2025-03-09 02:40:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:45,496 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2025-03-09 02:40:45,496 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) [2025-03-09 02:40:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2025-03-09 02:40:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-09 02:40:45,497 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:45,497 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] [2025-03-09 02:40:45,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 02:40:45,497 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:45,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash -984405394, now seen corresponding path program 1 times [2025-03-09 02:40:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507871864] [2025-03-09 02:40:45,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:45,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:40:45,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:40:45,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-09 02:40:45,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507871864] [2025-03-09 02:40:45,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507871864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:45,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:40:45,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:40:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268935320] [2025-03-09 02:40:45,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:45,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:40:45,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:45,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:40:45,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:40:45,641 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) [2025-03-09 02:40:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:45,676 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2025-03-09 02:40:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:40:45,677 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 [2025-03-09 02:40:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:45,678 INFO L225 Difference]: With dead ends: 35 [2025-03-09 02:40:45,678 INFO L226 Difference]: Without dead ends: 33 [2025-03-09 02:40:45,678 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 [2025-03-09 02:40:45,679 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 [2025-03-09 02:40:45,679 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] [2025-03-09 02:40:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-03-09 02:40:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2025-03-09 02:40:45,686 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) [2025-03-09 02:40:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-03-09 02:40:45,687 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2025-03-09 02:40:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:45,687 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-03-09 02:40:45,687 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) [2025-03-09 02:40:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-03-09 02:40:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-09 02:40:45,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:45,688 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] [2025-03-09 02:40:45,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 02:40:45,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:45,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash -119709208, now seen corresponding path program 1 times [2025-03-09 02:40:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:45,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160822668] [2025-03-09 02:40:45,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:45,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 02:40:45,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 02:40:45,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-09 02:40:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160822668] [2025-03-09 02:40:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160822668] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686276377] [2025-03-09 02:40:45,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:45,818 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) [2025-03-09 02:40:45,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 02:40:45,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 02:40:45,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 02:40:45,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 02:40:45,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-09 02:40:45,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-09 02:40:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686276377] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:46,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:46,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-09 02:40:46,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543853555] [2025-03-09 02:40:46,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:46,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 02:40:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:46,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 02:40:46,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:40:46,121 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) [2025-03-09 02:40:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:46,328 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2025-03-09 02:40:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:40:46,328 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 [2025-03-09 02:40:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:46,329 INFO L225 Difference]: With dead ends: 91 [2025-03-09 02:40:46,329 INFO L226 Difference]: Without dead ends: 65 [2025-03-09 02:40:46,330 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 [2025-03-09 02:40:46,331 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:46,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 92 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-03-09 02:40:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2025-03-09 02:40:46,338 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) [2025-03-09 02:40:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2025-03-09 02:40:46,340 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2025-03-09 02:40:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:46,340 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2025-03-09 02:40:46,341 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) [2025-03-09 02:40:46,341 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2025-03-09 02:40:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-09 02:40:46,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:46,342 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] [2025-03-09 02:40:46,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 02:40:46,542 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 [2025-03-09 02:40:46,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:46,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1220480843, now seen corresponding path program 2 times [2025-03-09 02:40:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436855590] [2025-03-09 02:40:46,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:46,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:46,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-09 02:40:46,560 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 02:40:46,560 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:46,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:40:46,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:46,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436855590] [2025-03-09 02:40:46,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436855590] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357867619] [2025-03-09 02:40:46,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:46,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:46,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:46,632 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) [2025-03-09 02:40:46,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 02:40:46,654 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-09 02:40:46,664 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 02:40:46,664 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:46,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:46,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 02:40:46,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:40:46,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:40:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357867619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:40:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-03-09 02:40:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861879400] [2025-03-09 02:40:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:46,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:40:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:46,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:40:46,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:40:46,711 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) [2025-03-09 02:40:46,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:46,738 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2025-03-09 02:40:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:40:46,739 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 [2025-03-09 02:40:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:46,739 INFO L225 Difference]: With dead ends: 60 [2025-03-09 02:40:46,739 INFO L226 Difference]: Without dead ends: 59 [2025-03-09 02:40:46,740 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 [2025-03-09 02:40:46,740 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 [2025-03-09 02:40:46,741 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] [2025-03-09 02:40:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-03-09 02:40:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2025-03-09 02:40:46,746 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) [2025-03-09 02:40:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2025-03-09 02:40:46,748 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2025-03-09 02:40:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:46,748 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2025-03-09 02:40:46,748 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) [2025-03-09 02:40:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2025-03-09 02:40:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-09 02:40:46,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:46,749 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] [2025-03-09 02:40:46,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:46,955 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 [2025-03-09 02:40:46,955 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:46,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash -819799558, now seen corresponding path program 1 times [2025-03-09 02:40:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:46,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553061361] [2025-03-09 02:40:46,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:46,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 02:40:46,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 02:40:46,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:46,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:40:47,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553061361] [2025-03-09 02:40:47,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553061361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300391470] [2025-03-09 02:40:47,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:47,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:47,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:47,065 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) [2025-03-09 02:40:47,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 02:40:47,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 02:40:47,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 02:40:47,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:47,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:47,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 02:40:47,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:40:47,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:40:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300391470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:47,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:40:47,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-03-09 02:40:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019096718] [2025-03-09 02:40:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:47,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:40:47,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:47,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:40:47,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:40:47,153 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) [2025-03-09 02:40:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:47,187 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2025-03-09 02:40:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:40:47,188 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 [2025-03-09 02:40:47,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:47,189 INFO L225 Difference]: With dead ends: 82 [2025-03-09 02:40:47,189 INFO L226 Difference]: Without dead ends: 81 [2025-03-09 02:40:47,190 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 [2025-03-09 02:40:47,191 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 [2025-03-09 02:40:47,191 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] [2025-03-09 02:40:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-09 02:40:47,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2025-03-09 02:40:47,202 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) [2025-03-09 02:40:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2025-03-09 02:40:47,204 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 26 [2025-03-09 02:40:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:47,204 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2025-03-09 02:40:47,204 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) [2025-03-09 02:40:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2025-03-09 02:40:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-09 02:40:47,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:47,209 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] [2025-03-09 02:40:47,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:47,413 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 [2025-03-09 02:40:47,413 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:47,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1588695901, now seen corresponding path program 1 times [2025-03-09 02:40:47,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673905396] [2025-03-09 02:40:47,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:47,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:47,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 02:40:47,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 02:40:47,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:47,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-09 02:40:47,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673905396] [2025-03-09 02:40:47,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673905396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270914138] [2025-03-09 02:40:47,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:47,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:47,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:47,534 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) [2025-03-09 02:40:47,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 02:40:47,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 02:40:47,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 02:40:47,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:47,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:47,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 02:40:47,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-03-09 02:40:47,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-09 02:40:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270914138] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:47,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:47,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-03-09 02:40:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086266905] [2025-03-09 02:40:47,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:47,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 02:40:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:47,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 02:40:47,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:40:47,844 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) [2025-03-09 02:40:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:48,009 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2025-03-09 02:40:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 02:40:48,009 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 [2025-03-09 02:40:48,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:48,011 INFO L225 Difference]: With dead ends: 141 [2025-03-09 02:40:48,011 INFO L226 Difference]: Without dead ends: 139 [2025-03-09 02:40:48,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2025-03-09 02:40:48,012 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 [2025-03-09 02:40:48,012 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] [2025-03-09 02:40:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-03-09 02:40:48,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2025-03-09 02:40:48,022 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) [2025-03-09 02:40:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2025-03-09 02:40:48,023 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 52 [2025-03-09 02:40:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:48,023 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2025-03-09 02:40:48,023 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) [2025-03-09 02:40:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2025-03-09 02:40:48,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-09 02:40:48,025 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:48,025 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] [2025-03-09 02:40:48,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 02:40:48,225 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 [2025-03-09 02:40:48,225 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:48,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 993600403, now seen corresponding path program 1 times [2025-03-09 02:40:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080503974] [2025-03-09 02:40:48,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:48,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-09 02:40:48,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-09 02:40:48,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:48,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-09 02:40:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:48,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080503974] [2025-03-09 02:40:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080503974] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:48,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525308236] [2025-03-09 02:40:48,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:48,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:48,355 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) [2025-03-09 02:40:48,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 02:40:48,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-09 02:40:48,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-09 02:40:48,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:48,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:48,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:40:48,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-09 02:40:48,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-03-09 02:40:48,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525308236] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:48,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 18 [2025-03-09 02:40:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730257168] [2025-03-09 02:40:48,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:48,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 02:40:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:48,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 02:40:48,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-03-09 02:40:48,632 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) [2025-03-09 02:40:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:49,129 INFO L93 Difference]: Finished difference Result 257 states and 504 transitions. [2025-03-09 02:40:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-09 02:40:49,129 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 [2025-03-09 02:40:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:49,131 INFO L225 Difference]: With dead ends: 257 [2025-03-09 02:40:49,131 INFO L226 Difference]: Without dead ends: 163 [2025-03-09 02:40:49,133 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 [2025-03-09 02:40:49,133 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 94 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:49,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 106 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:40:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-03-09 02:40:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 103. [2025-03-09 02:40:49,161 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) [2025-03-09 02:40:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 171 transitions. [2025-03-09 02:40:49,164 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 171 transitions. Word has length 63 [2025-03-09 02:40:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:49,165 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 171 transitions. [2025-03-09 02:40:49,165 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) [2025-03-09 02:40:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 171 transitions. [2025-03-09 02:40:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-03-09 02:40:49,171 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:49,171 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] [2025-03-09 02:40:49,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:49,371 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 [2025-03-09 02:40:49,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:49,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1487466844, now seen corresponding path program 2 times [2025-03-09 02:40:49,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:49,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912592762] [2025-03-09 02:40:49,372 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:49,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:49,379 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-03-09 02:40:49,394 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-03-09 02:40:49,394 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:49,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 123 proven. 424 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2025-03-09 02:40:49,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912592762] [2025-03-09 02:40:49,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912592762] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459889718] [2025-03-09 02:40:49,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:49,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:49,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:49,654 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) [2025-03-09 02:40:49,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 02:40:49,692 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-03-09 02:40:49,735 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-03-09 02:40:49,735 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:49,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:49,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 02:40:49,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 670 proven. 177 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2025-03-09 02:40:49,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 144 proven. 495 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2025-03-09 02:40:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459889718] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:50,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:50,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 19 [2025-03-09 02:40:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102156785] [2025-03-09 02:40:50,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:50,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 02:40:50,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:50,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 02:40:50,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-03-09 02:40:50,299 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) [2025-03-09 02:40:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:50,518 INFO L93 Difference]: Finished difference Result 204 states and 359 transitions. [2025-03-09 02:40:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 02:40:50,518 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 [2025-03-09 02:40:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:50,520 INFO L225 Difference]: With dead ends: 204 [2025-03-09 02:40:50,522 INFO L226 Difference]: Without dead ends: 105 [2025-03-09 02:40:50,524 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 [2025-03-09 02:40:50,524 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 [2025-03-09 02:40:50,525 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] [2025-03-09 02:40:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-09 02:40:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2025-03-09 02:40:50,533 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) [2025-03-09 02:40:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2025-03-09 02:40:50,534 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 183 [2025-03-09 02:40:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:50,535 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2025-03-09 02:40:50,535 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) [2025-03-09 02:40:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2025-03-09 02:40:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-09 02:40:50,536 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:50,536 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] [2025-03-09 02:40:50,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:50,740 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 [2025-03-09 02:40:50,740 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:50,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1395088361, now seen corresponding path program 3 times [2025-03-09 02:40:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:50,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580381001] [2025-03-09 02:40:50,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:40:50,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:50,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 85 statements into 7 equivalence classes. [2025-03-09 02:40:50,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 85 statements. [2025-03-09 02:40:50,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 02:40:50,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-09 02:40:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:50,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580381001] [2025-03-09 02:40:50,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580381001] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:50,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:40:50,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:40:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852452772] [2025-03-09 02:40:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:50,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:40:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:50,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:40:50,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:40:50,771 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) [2025-03-09 02:40:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:50,785 INFO L93 Difference]: Finished difference Result 101 states and 135 transitions. [2025-03-09 02:40:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:40:50,785 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 [2025-03-09 02:40:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:50,786 INFO L225 Difference]: With dead ends: 101 [2025-03-09 02:40:50,787 INFO L226 Difference]: Without dead ends: 100 [2025-03-09 02:40:50,787 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 [2025-03-09 02:40:50,788 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 [2025-03-09 02:40:50,788 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] [2025-03-09 02:40:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-09 02:40:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2025-03-09 02:40:50,797 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) [2025-03-09 02:40:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2025-03-09 02:40:50,798 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 85 [2025-03-09 02:40:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:50,798 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2025-03-09 02:40:50,798 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) [2025-03-09 02:40:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2025-03-09 02:40:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-09 02:40:50,799 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:50,799 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] [2025-03-09 02:40:50,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 02:40:50,799 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:50,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 113570571, now seen corresponding path program 4 times [2025-03-09 02:40:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517315450] [2025-03-09 02:40:50,799 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:40:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:50,803 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-03-09 02:40:50,806 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 55 of 92 statements. [2025-03-09 02:40:50,806 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:40:50,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 96 proven. 48 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-09 02:40:50,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:50,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517315450] [2025-03-09 02:40:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517315450] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:50,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285897773] [2025-03-09 02:40:50,897 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:40:50,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:50,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:50,900 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) [2025-03-09 02:40:50,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 02:40:50,929 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-03-09 02:40:50,938 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 55 of 92 statements. [2025-03-09 02:40:50,938 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:40:50,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:50,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:40:50,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 142 proven. 37 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-09 02:40:50,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 104 proven. 62 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-03-09 02:40:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285897773] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:51,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:51,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 16 [2025-03-09 02:40:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040149762] [2025-03-09 02:40:51,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:51,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 02:40:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:51,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 02:40:51,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:40:51,382 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) [2025-03-09 02:40:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:51,502 INFO L93 Difference]: Finished difference Result 157 states and 219 transitions. [2025-03-09 02:40:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:40:51,503 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 [2025-03-09 02:40:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:51,504 INFO L225 Difference]: With dead ends: 157 [2025-03-09 02:40:51,504 INFO L226 Difference]: Without dead ends: 67 [2025-03-09 02:40:51,504 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 [2025-03-09 02:40:51,505 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:51,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 89 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-03-09 02:40:51,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2025-03-09 02:40:51,508 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) [2025-03-09 02:40:51,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2025-03-09 02:40:51,509 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 92 [2025-03-09 02:40:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:51,509 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2025-03-09 02:40:51,509 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) [2025-03-09 02:40:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2025-03-09 02:40:51,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2025-03-09 02:40:51,510 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:51,511 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] [2025-03-09 02:40:51,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 02:40:51,711 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 [2025-03-09 02:40:51,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:51,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash -533607947, now seen corresponding path program 5 times [2025-03-09 02:40:51,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:51,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959531317] [2025-03-09 02:40:51,712 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:40:51,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:51,723 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 282 statements into 21 equivalence classes. [2025-03-09 02:40:51,734 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 132 of 282 statements. [2025-03-09 02:40:51,734 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-09 02:40:51,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 338 proven. 786 refuted. 0 times theorem prover too weak. 1637 trivial. 0 not checked. [2025-03-09 02:40:51,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959531317] [2025-03-09 02:40:51,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959531317] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:51,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835952603] [2025-03-09 02:40:51,932 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:40:51,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:51,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:51,933 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) [2025-03-09 02:40:51,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 02:40:51,969 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 282 statements into 21 equivalence classes. [2025-03-09 02:40:51,991 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 132 of 282 statements. [2025-03-09 02:40:51,992 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-09 02:40:51,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:51,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 02:40:51,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 1521 proven. 384 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2025-03-09 02:40:52,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 339 proven. 794 refuted. 0 times theorem prover too weak. 1628 trivial. 0 not checked. [2025-03-09 02:40:52,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835952603] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:52,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:52,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 15] total 21 [2025-03-09 02:40:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255882012] [2025-03-09 02:40:52,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:52,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 02:40:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:52,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 02:40:52,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-03-09 02:40:52,770 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) [2025-03-09 02:40:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:53,009 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2025-03-09 02:40:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 02:40:53,009 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 [2025-03-09 02:40:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:53,010 INFO L225 Difference]: With dead ends: 152 [2025-03-09 02:40:53,011 INFO L226 Difference]: Without dead ends: 93 [2025-03-09 02:40:53,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 554 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2025-03-09 02:40:53,012 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 [2025-03-09 02:40:53,013 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] [2025-03-09 02:40:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-09 02:40:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2025-03-09 02:40:53,019 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) [2025-03-09 02:40:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2025-03-09 02:40:53,020 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 282 [2025-03-09 02:40:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:53,021 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2025-03-09 02:40:53,021 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) [2025-03-09 02:40:53,022 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2025-03-09 02:40:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-09 02:40:53,022 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:53,022 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] [2025-03-09 02:40:53,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:53,227 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 [2025-03-09 02:40:53,227 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:53,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1715536077, now seen corresponding path program 6 times [2025-03-09 02:40:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667154860] [2025-03-09 02:40:53,228 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:40:53,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:53,234 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 130 statements into 9 equivalence classes. [2025-03-09 02:40:53,248 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 130 of 130 statements. [2025-03-09 02:40:53,248 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-09 02:40:53,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 183 proven. 132 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2025-03-09 02:40:53,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:53,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667154860] [2025-03-09 02:40:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667154860] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:53,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552356818] [2025-03-09 02:40:53,393 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:40:53,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:53,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:53,397 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) [2025-03-09 02:40:53,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 02:40:53,439 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 130 statements into 9 equivalence classes. [2025-03-09 02:40:53,464 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 130 of 130 statements. [2025-03-09 02:40:53,465 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-09 02:40:53,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:53,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-09 02:40:53,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 61 proven. 95 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2025-03-09 02:40:53,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 103 proven. 95 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2025-03-09 02:40:54,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552356818] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:54,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 33 [2025-03-09 02:40:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371277811] [2025-03-09 02:40:54,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:54,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-09 02:40:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:54,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-09 02:40:54,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2025-03-09 02:40:54,506 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) [2025-03-09 02:40:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:55,055 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2025-03-09 02:40:55,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 02:40:55,055 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 [2025-03-09 02:40:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:55,056 INFO L225 Difference]: With dead ends: 203 [2025-03-09 02:40:55,056 INFO L226 Difference]: Without dead ends: 123 [2025-03-09 02:40:55,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 231 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=501, Invalid=2469, Unknown=0, NotChecked=0, Total=2970 [2025-03-09 02:40:55,058 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 96 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:55,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 143 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:40:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-09 02:40:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 98. [2025-03-09 02:40:55,063 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) [2025-03-09 02:40:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2025-03-09 02:40:55,064 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 130 [2025-03-09 02:40:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:55,064 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2025-03-09 02:40:55,065 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) [2025-03-09 02:40:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2025-03-09 02:40:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-09 02:40:55,066 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:55,067 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] [2025-03-09 02:40:55,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:55,270 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 [2025-03-09 02:40:55,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:55,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash -200525822, now seen corresponding path program 7 times [2025-03-09 02:40:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:55,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616913810] [2025-03-09 02:40:55,271 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:40:55,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:55,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-09 02:40:55,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-09 02:40:55,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:55,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 521 proven. 1076 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2025-03-09 02:40:55,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616913810] [2025-03-09 02:40:55,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616913810] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836234117] [2025-03-09 02:40:55,688 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:40:55,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:55,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:55,691 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) [2025-03-09 02:40:55,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 02:40:55,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-09 02:40:55,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-09 02:40:55,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:55,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:55,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-09 02:40:55,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 613 proven. 1181 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2025-03-09 02:40:55,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 613 proven. 1253 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2025-03-09 02:40:57,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836234117] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:57,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:57,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2025-03-09 02:40:57,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811231448] [2025-03-09 02:40:57,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:57,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-09 02:40:57,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:57,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-09 02:40:57,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2025-03-09 02:40:57,166 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) [2025-03-09 02:40:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:57,490 INFO L93 Difference]: Finished difference Result 236 states and 312 transitions. [2025-03-09 02:40:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 02:40:57,492 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 [2025-03-09 02:40:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:57,493 INFO L225 Difference]: With dead ends: 236 [2025-03-09 02:40:57,493 INFO L226 Difference]: Without dead ends: 144 [2025-03-09 02:40:57,496 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 [2025-03-09 02:40:57,496 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 210 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:57,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 146 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:40:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-03-09 02:40:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 122. [2025-03-09 02:40:57,505 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) [2025-03-09 02:40:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2025-03-09 02:40:57,506 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 307 [2025-03-09 02:40:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:57,507 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2025-03-09 02:40:57,507 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) [2025-03-09 02:40:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2025-03-09 02:40:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-09 02:40:57,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:57,511 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] [2025-03-09 02:40:57,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 02:40:57,715 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 [2025-03-09 02:40:57,715 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:57,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash -449393690, now seen corresponding path program 8 times [2025-03-09 02:40:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637318775] [2025-03-09 02:40:57,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:57,723 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 307 statements into 2 equivalence classes. [2025-03-09 02:40:57,741 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-03-09 02:40:57,741 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:57,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 554 proven. 990 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2025-03-09 02:40:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637318775] [2025-03-09 02:40:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637318775] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392432754] [2025-03-09 02:40:58,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:58,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:58,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:58,077 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) [2025-03-09 02:40:58,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 02:40:58,135 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 307 statements into 2 equivalence classes. [2025-03-09 02:40:58,189 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-03-09 02:40:58,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:58,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:58,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-09 02:40:58,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1858 proven. 484 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2025-03-09 02:40:58,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 551 proven. 1101 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2025-03-09 02:40:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392432754] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:59,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:59,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2025-03-09 02:40:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337606659] [2025-03-09 02:40:59,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:59,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 02:40:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:59,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 02:40:59,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:40:59,355 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) [2025-03-09 02:40:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:59,538 INFO L93 Difference]: Finished difference Result 235 states and 300 transitions. [2025-03-09 02:40:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 02:40:59,538 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 [2025-03-09 02:40:59,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:59,539 INFO L225 Difference]: With dead ends: 235 [2025-03-09 02:40:59,539 INFO L226 Difference]: Without dead ends: 119 [2025-03-09 02:40:59,540 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 [2025-03-09 02:40:59,541 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 72 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:59,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 156 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-03-09 02:40:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 107. [2025-03-09 02:40:59,545 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) [2025-03-09 02:40:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2025-03-09 02:40:59,546 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 307 [2025-03-09 02:40:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:59,546 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2025-03-09 02:40:59,547 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) [2025-03-09 02:40:59,547 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2025-03-09 02:40:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2025-03-09 02:40:59,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:59,551 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] [2025-03-09 02:40:59,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:59,755 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 [2025-03-09 02:40:59,755 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:59,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1956513874, now seen corresponding path program 9 times [2025-03-09 02:40:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:59,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679859877] [2025-03-09 02:40:59,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:40:59,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:59,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 503 statements into 35 equivalence classes. [2025-03-09 02:40:59,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 372 of 503 statements. [2025-03-09 02:40:59,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-09 02:40:59,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1679 proven. 1009 refuted. 0 times theorem prover too weak. 6350 trivial. 0 not checked. [2025-03-09 02:41:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679859877] [2025-03-09 02:41:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679859877] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463351162] [2025-03-09 02:41:00,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:41:00,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:00,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:00,213 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) [2025-03-09 02:41:00,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 02:41:00,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 503 statements into 35 equivalence classes. [2025-03-09 02:41:00,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 372 of 503 statements. [2025-03-09 02:41:00,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-09 02:41:00,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:00,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-09 02:41:00,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1771 proven. 1024 refuted. 0 times theorem prover too weak. 6243 trivial. 0 not checked. [2025-03-09 02:41:00,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1779 proven. 1063 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2025-03-09 02:41:01,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463351162] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:01,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:01,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2025-03-09 02:41:01,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286162832] [2025-03-09 02:41:01,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:01,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 02:41:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:01,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 02:41:01,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:41:01,444 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) [2025-03-09 02:41:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:01,795 INFO L93 Difference]: Finished difference Result 298 states and 379 transitions. [2025-03-09 02:41:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-09 02:41:01,795 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 [2025-03-09 02:41:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:01,797 INFO L225 Difference]: With dead ends: 298 [2025-03-09 02:41:01,797 INFO L226 Difference]: Without dead ends: 171 [2025-03-09 02:41:01,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1053 GetRequests, 997 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=633, Invalid=1719, Unknown=0, NotChecked=0, Total=2352 [2025-03-09 02:41:01,798 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 254 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:01,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 132 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-03-09 02:41:01,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 137. [2025-03-09 02:41:01,805 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) [2025-03-09 02:41:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2025-03-09 02:41:01,807 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 503 [2025-03-09 02:41:01,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:01,808 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2025-03-09 02:41:01,808 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) [2025-03-09 02:41:01,808 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2025-03-09 02:41:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-09 02:41:01,811 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:01,811 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] [2025-03-09 02:41:01,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 02:41:02,011 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 [2025-03-09 02:41:02,012 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:02,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1953340652, now seen corresponding path program 10 times [2025-03-09 02:41:02,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:02,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503825854] [2025-03-09 02:41:02,012 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:41:02,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:02,022 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 340 statements into 2 equivalence classes. [2025-03-09 02:41:02,035 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 201 of 340 statements. [2025-03-09 02:41:02,035 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:41:02,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 743 proven. 1095 refuted. 0 times theorem prover too weak. 2212 trivial. 0 not checked. [2025-03-09 02:41:02,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:02,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503825854] [2025-03-09 02:41:02,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503825854] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:02,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891151667] [2025-03-09 02:41:02,245 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:41:02,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:02,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:02,247 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) [2025-03-09 02:41:02,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 02:41:02,326 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 340 statements into 2 equivalence classes. [2025-03-09 02:41:02,354 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 201 of 340 statements. [2025-03-09 02:41:02,355 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:41:02,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:02,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-09 02:41:02,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 856 proven. 1214 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2025-03-09 02:41:02,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 856 proven. 1290 refuted. 0 times theorem prover too weak. 1904 trivial. 0 not checked. [2025-03-09 02:41:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891151667] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:03,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:03,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2025-03-09 02:41:03,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501798598] [2025-03-09 02:41:03,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:03,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-09 02:41:03,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:03,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-09 02:41:03,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2025-03-09 02:41:03,728 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) [2025-03-09 02:41:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:03,993 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2025-03-09 02:41:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-09 02:41:03,994 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 [2025-03-09 02:41:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:03,995 INFO L225 Difference]: With dead ends: 286 [2025-03-09 02:41:03,995 INFO L226 Difference]: Without dead ends: 155 [2025-03-09 02:41:03,996 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 [2025-03-09 02:41:03,997 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 119 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2025-03-09 02:41:03,997 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] [2025-03-09 02:41:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-09 02:41:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 146. [2025-03-09 02:41:04,004 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) [2025-03-09 02:41:04,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2025-03-09 02:41:04,005 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 340 [2025-03-09 02:41:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:04,007 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2025-03-09 02:41:04,007 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) [2025-03-09 02:41:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2025-03-09 02:41:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2025-03-09 02:41:04,009 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:04,009 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] [2025-03-09 02:41:04,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:04,213 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 [2025-03-09 02:41:04,213 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:04,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1806187615, now seen corresponding path program 11 times [2025-03-09 02:41:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:04,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673784894] [2025-03-09 02:41:04,214 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:41:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:04,221 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 399 statements into 29 equivalence classes. [2025-03-09 02:41:04,247 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) and asserted 399 of 399 statements. [2025-03-09 02:41:04,248 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2025-03-09 02:41:04,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 936 proven. 1467 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2025-03-09 02:41:06,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673784894] [2025-03-09 02:41:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673784894] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761803114] [2025-03-09 02:41:06,550 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:41:06,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:06,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:06,553 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) [2025-03-09 02:41:06,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 02:41:06,638 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 399 statements into 29 equivalence classes. [2025-03-09 02:41:06,723 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) and asserted 399 of 399 statements. [2025-03-09 02:41:06,724 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2025-03-09 02:41:06,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:06,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-03-09 02:41:06,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2025-03-09 02:41:07,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2025-03-09 02:41:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761803114] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:12,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:12,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 29] total 47 [2025-03-09 02:41:12,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901001708] [2025-03-09 02:41:12,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:12,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-09 02:41:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:12,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-09 02:41:12,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2025-03-09 02:41:12,334 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) [2025-03-09 02:41:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:12,477 INFO L93 Difference]: Finished difference Result 177 states and 233 transitions. [2025-03-09 02:41:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 02:41:12,477 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 [2025-03-09 02:41:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:12,479 INFO L225 Difference]: With dead ends: 177 [2025-03-09 02:41:12,479 INFO L226 Difference]: Without dead ends: 176 [2025-03-09 02:41:12,479 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 [2025-03-09 02:41:12,480 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:12,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 221 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-03-09 02:41:12,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2025-03-09 02:41:12,491 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) [2025-03-09 02:41:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 218 transitions. [2025-03-09 02:41:12,493 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 218 transitions. Word has length 399 [2025-03-09 02:41:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:12,494 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 218 transitions. [2025-03-09 02:41:12,494 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) [2025-03-09 02:41:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 218 transitions. [2025-03-09 02:41:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2025-03-09 02:41:12,497 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:12,497 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] [2025-03-09 02:41:12,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:12,702 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 [2025-03-09 02:41:12,702 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:12,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 412250085, now seen corresponding path program 12 times [2025-03-09 02:41:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555281420] [2025-03-09 02:41:12,703 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:41:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:12,718 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 811 statements into 64 equivalence classes. [2025-03-09 02:41:12,821 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) and asserted 775 of 811 statements. [2025-03-09 02:41:12,821 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2025-03-09 02:41:12,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4072 proven. 5882 refuted. 0 times theorem prover too weak. 13905 trivial. 0 not checked. [2025-03-09 02:41:20,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:20,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555281420] [2025-03-09 02:41:20,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555281420] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:20,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331732704] [2025-03-09 02:41:20,481 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:41:20,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:20,483 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) [2025-03-09 02:41:20,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 02:41:20,647 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 811 statements into 64 equivalence classes. [2025-03-09 02:41:20,816 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) and asserted 775 of 811 statements. [2025-03-09 02:41:20,816 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2025-03-09 02:41:20,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:20,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 165 conjuncts are in the unsatisfiable core [2025-03-09 02:41:20,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 3732 proven. 4596 refuted. 0 times theorem prover too weak. 15531 trivial. 0 not checked. [2025-03-09 02:41:21,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4599 proven. 4261 refuted. 0 times theorem prover too weak. 14999 trivial. 0 not checked. [2025-03-09 02:41:39,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331732704] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:39,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:39,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 38] total 52 [2025-03-09 02:41:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447096136] [2025-03-09 02:41:39,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:39,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-09 02:41:39,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:39,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-09 02:41:39,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=2149, Unknown=0, NotChecked=0, Total=2756 [2025-03-09 02:41:39,910 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) [2025-03-09 02:41:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:40,120 INFO L93 Difference]: Finished difference Result 225 states and 329 transitions. [2025-03-09 02:41:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-09 02:41:40,121 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 [2025-03-09 02:41:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:40,123 INFO L225 Difference]: With dead ends: 225 [2025-03-09 02:41:40,123 INFO L226 Difference]: Without dead ends: 224 [2025-03-09 02:41:40,124 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 [2025-03-09 02:41:40,124 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:40,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 257 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-03-09 02:41:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 185. [2025-03-09 02:41:40,134 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) [2025-03-09 02:41:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 262 transitions. [2025-03-09 02:41:40,135 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 262 transitions. Word has length 811 [2025-03-09 02:41:40,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:40,135 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 262 transitions. [2025-03-09 02:41:40,136 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) [2025-03-09 02:41:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 262 transitions. [2025-03-09 02:41:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2025-03-09 02:41:40,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:40,145 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] [2025-03-09 02:41:40,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 02:41:40,345 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 [2025-03-09 02:41:40,346 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:40,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1855773326, now seen corresponding path program 13 times [2025-03-09 02:41:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:40,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860370335] [2025-03-09 02:41:40,346 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:41:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:40,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1478 statements into 1 equivalence classes. [2025-03-09 02:41:40,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1478 of 1478 statements. [2025-03-09 02:41:40,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:40,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 2828 proven. 11650 refuted. 0 times theorem prover too weak. 65653 trivial. 0 not checked. [2025-03-09 02:41:42,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860370335] [2025-03-09 02:41:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860370335] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144128261] [2025-03-09 02:41:42,645 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:41:42,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:42,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:42,647 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) [2025-03-09 02:41:42,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 02:41:43,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1478 statements into 1 equivalence classes. [2025-03-09 02:41:43,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1478 of 1478 statements. [2025-03-09 02:41:43,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-09 02:41:43,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 3345 proven. 13356 refuted. 0 times theorem prover too weak. 63430 trivial. 0 not checked. [2025-03-09 02:41:43,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 3345 proven. 13524 refuted. 0 times theorem prover too weak. 63262 trivial. 0 not checked. [2025-03-09 02:41:46,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144128261] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:46,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:46,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2025-03-09 02:41:46,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500888978] [2025-03-09 02:41:46,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:46,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-09 02:41:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:46,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-09 02:41:46,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2025-03-09 02:41:46,979 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) [2025-03-09 02:41:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:47,464 INFO L93 Difference]: Finished difference Result 437 states and 714 transitions. [2025-03-09 02:41:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-09 02:41:47,465 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 [2025-03-09 02:41:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:47,468 INFO L225 Difference]: With dead ends: 437 [2025-03-09 02:41:47,468 INFO L226 Difference]: Without dead ends: 258 [2025-03-09 02:41:47,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3017 GetRequests, 2937 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2025-03-09 02:41:47,472 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 493 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:47,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 244 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2025-03-09 02:41:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 221. [2025-03-09 02:41:47,495 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) [2025-03-09 02:41:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 318 transitions. [2025-03-09 02:41:47,498 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 318 transitions. Word has length 1478 [2025-03-09 02:41:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:47,500 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 318 transitions. [2025-03-09 02:41:47,500 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) [2025-03-09 02:41:47,500 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 318 transitions. [2025-03-09 02:41:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1950 [2025-03-09 02:41:47,521 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:47,522 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] [2025-03-09 02:41:47,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:47,722 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 [2025-03-09 02:41:47,723 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:47,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:47,723 INFO L85 PathProgramCache]: Analyzing trace with hash 522897199, now seen corresponding path program 14 times [2025-03-09 02:41:47,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:47,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215200640] [2025-03-09 02:41:47,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:47,751 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1949 statements into 2 equivalence classes. [2025-03-09 02:41:47,871 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1949 of 1949 statements. [2025-03-09 02:41:47,872 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:47,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 139798 backedges. 3981 proven. 17419 refuted. 0 times theorem prover too weak. 118398 trivial. 0 not checked. [2025-03-09 02:41:50,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:50,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215200640] [2025-03-09 02:41:50,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215200640] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:50,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187306918] [2025-03-09 02:41:50,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:50,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:50,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:50,957 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) [2025-03-09 02:41:50,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 02:41:51,326 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1949 statements into 2 equivalence classes. [2025-03-09 02:41:51,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 1949 of 1949 statements. [2025-03-09 02:41:51,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:51,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-09 02:41:51,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 139798 backedges. 60112 proven. 2667 refuted. 0 times theorem prover too weak. 77019 trivial. 0 not checked. [2025-03-09 02:41:51,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 139798 backedges. 3424 proven. 18176 refuted. 0 times theorem prover too weak. 118198 trivial. 0 not checked. [2025-03-09 02:41:56,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187306918] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:56,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:56,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 27] total 29 [2025-03-09 02:41:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085783470] [2025-03-09 02:41:56,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:56,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-09 02:41:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:56,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-09 02:41:56,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2025-03-09 02:41:56,516 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) [2025-03-09 02:41:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:56,878 INFO L93 Difference]: Finished difference Result 418 states and 639 transitions. [2025-03-09 02:41:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 02:41:56,879 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 [2025-03-09 02:41:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:56,881 INFO L225 Difference]: With dead ends: 418 [2025-03-09 02:41:56,881 INFO L226 Difference]: Without dead ends: 203 [2025-03-09 02:41:56,884 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 [2025-03-09 02:41:56,885 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 199 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:56,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 252 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-09 02:41:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 167. [2025-03-09 02:41:56,902 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) [2025-03-09 02:41:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2025-03-09 02:41:56,903 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 1949 [2025-03-09 02:41:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:56,903 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2025-03-09 02:41:56,904 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) [2025-03-09 02:41:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2025-03-09 02:41:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2008 [2025-03-09 02:41:56,950 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:56,951 INFO L218 NwaCegarLoop]: trace histogram [207, 201, 168, 105, 105, 105, 105, 101, 101, 101, 101, 101, 100, 100, 100, 99, 63, 39, 1, 1, 1, 1, 1] [2025-03-09 02:41:56,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 02:41:57,151 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 [2025-03-09 02:41:57,152 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:57,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1621858487, now seen corresponding path program 15 times [2025-03-09 02:41:57,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:57,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818564308] [2025-03-09 02:41:57,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:41:57,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:57,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 2007 statements into 157 equivalence classes. [2025-03-09 02:41:57,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 110 check-sat command(s) and asserted 1395 of 2007 statements. [2025-03-09 02:41:57,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 110 check-sat command(s) [2025-03-09 02:41:57,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat