./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 14:31:05,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 14:31:05,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 14:31:05,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 14:31:05,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 14:31:05,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 14:31:05,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 14:31:05,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 14:31:05,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 14:31:05,091 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 14:31:05,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 14:31:05,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 14:31:05,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 14:31:05,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 14:31:05,092 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 14:31:05,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 14:31:05,093 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 14:31:05,094 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 14:31:05,094 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 14:31:05,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 14:31:05,094 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 14:31:05,094 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 14:31:05,094 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 14:31:05,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:31:05,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 14:31:05,095 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2025-02-06 14:31:05,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 14:31:05,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 14:31:05,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 14:31:05,303 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 14:31:05,303 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 14:31:05,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-02-06 14:31:06,496 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cc98a1e20/2549f3fca3be4f42830408784d4470b3/FLAG79167afad [2025-02-06 14:31:06,694 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 14:31:06,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-02-06 14:31:06,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cc98a1e20/2549f3fca3be4f42830408784d4470b3/FLAG79167afad [2025-02-06 14:31:06,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cc98a1e20/2549f3fca3be4f42830408784d4470b3 [2025-02-06 14:31:06,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 14:31:06,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 14:31:06,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 14:31:06,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 14:31:06,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 14:31:06,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fad818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06, skipping insertion in model container [2025-02-06 14:31:06,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 14:31:06,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:31:06,876 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 14:31:06,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:31:06,893 INFO L204 MainTranslator]: Completed translation [2025-02-06 14:31:06,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06 WrapperNode [2025-02-06 14:31:06,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 14:31:06,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 14:31:06,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 14:31:06,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 14:31:06,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,911 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-02-06 14:31:06,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 14:31:06,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 14:31:06,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 14:31:06,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 14:31:06,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,918 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,924 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 14:31:06,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,929 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 14:31:06,935 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 14:31:06,935 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 14:31:06,935 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 14:31:06,936 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (1/1) ... [2025-02-06 14:31:06,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:31:06,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:06,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 14:31:06,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 14:31:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 14:31:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 14:31:06,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 14:31:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 14:31:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-02-06 14:31:06,977 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-02-06 14:31:07,012 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 14:31:07,013 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 14:31:07,086 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: havoc #t~ret4;havoc #t~ret5; [2025-02-06 14:31:07,091 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-02-06 14:31:07,091 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 14:31:07,096 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 14:31:07,096 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 14:31:07,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:31:07 BoogieIcfgContainer [2025-02-06 14:31:07,097 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 14:31:07,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 14:31:07,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 14:31:07,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 14:31:07,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:31:06" (1/3) ... [2025-02-06 14:31:07,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2324c21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:31:07, skipping insertion in model container [2025-02-06 14:31:07,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:06" (2/3) ... [2025-02-06 14:31:07,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2324c21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:31:07, skipping insertion in model container [2025-02-06 14:31:07,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:31:07" (3/3) ... [2025-02-06 14:31:07,103 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2025-02-06 14:31:07,112 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 14:31:07,113 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_10-1.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-02-06 14:31:07,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 14:31:07,149 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;@3017c703, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 14:31:07,149 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 14:31:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 14:31:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 14:31:07,155 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:07,155 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:07,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:07,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1976054303, now seen corresponding path program 1 times [2025-02-06 14:31:07,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:07,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457180409] [2025-02-06 14:31:07,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:07,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:07,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 14:31:07,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 14:31:07,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:07,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:31:07,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457180409] [2025-02-06 14:31:07,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457180409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:07,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:07,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 14:31:07,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033841579] [2025-02-06 14:31:07,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:07,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 14:31:07,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:07,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 14:31:07,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 14:31:07,272 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:31:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:07,296 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-02-06 14:31:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 14:31:07,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 14:31:07,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:07,302 INFO L225 Difference]: With dead ends: 38 [2025-02-06 14:31:07,302 INFO L226 Difference]: Without dead ends: 24 [2025-02-06 14:31:07,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 14:31:07,305 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:07,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-06 14:31:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-02-06 14:31:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-06 14:31:07,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-02-06 14:31:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:07,327 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-06 14:31:07,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:31:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-06 14:31:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 14:31:07,328 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:07,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:07,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 14:31:07,328 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:07,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:07,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1128141252, now seen corresponding path program 1 times [2025-02-06 14:31:07,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:07,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310513280] [2025-02-06 14:31:07,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:07,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:07,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 14:31:07,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 14:31:07,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:07,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:31:07,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:07,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310513280] [2025-02-06 14:31:07,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310513280] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:07,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:07,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:31:07,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265573906] [2025-02-06 14:31:07,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:07,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:07,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:07,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:07,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:07,381 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:31:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:07,430 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-02-06 14:31:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:07,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 14:31:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:07,431 INFO L225 Difference]: With dead ends: 24 [2025-02-06 14:31:07,431 INFO L226 Difference]: Without dead ends: 22 [2025-02-06 14:31:07,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:31:07,432 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:07,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-06 14:31:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-02-06 14:31:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-02-06 14:31:07,436 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-02-06 14:31:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:07,437 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-02-06 14:31:07,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:31:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-02-06 14:31:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 14:31:07,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:07,437 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:07,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 14:31:07,438 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:07,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2023302297, now seen corresponding path program 1 times [2025-02-06 14:31:07,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:07,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407113028] [2025-02-06 14:31:07,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:07,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:07,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 14:31:07,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 14:31:07,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:07,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 14:31:07,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:07,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407113028] [2025-02-06 14:31:07,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407113028] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:07,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:07,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:31:07,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969228022] [2025-02-06 14:31:07,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:07,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:07,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:07,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:07,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:07,549 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:07,597 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-02-06 14:31:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:07,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-06 14:31:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:07,600 INFO L225 Difference]: With dead ends: 34 [2025-02-06 14:31:07,600 INFO L226 Difference]: Without dead ends: 32 [2025-02-06 14:31:07,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:07,600 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:07,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-06 14:31:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-02-06 14:31:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 14:31:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-02-06 14:31:07,611 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2025-02-06 14:31:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:07,611 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-02-06 14:31:07,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-02-06 14:31:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 14:31:07,613 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:07,613 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:07,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 14:31:07,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:07,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1013164860, now seen corresponding path program 1 times [2025-02-06 14:31:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153878297] [2025-02-06 14:31:07,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:07,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:31:07,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:31:07,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:07,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:31:07,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153878297] [2025-02-06 14:31:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153878297] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:07,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945092847] [2025-02-06 14:31:07,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:07,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:07,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:07,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:07,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 14:31:07,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:31:07,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:31:07,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:07,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:07,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 14:31:07,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:31:07,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 14:31:07,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945092847] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:07,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-02-06 14:31:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042974577] [2025-02-06 14:31:07,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:07,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 14:31:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:07,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 14:31:07,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:31:07,989 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:08,436 INFO L93 Difference]: Finished difference Result 142 states and 214 transitions. [2025-02-06 14:31:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 14:31:08,437 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2025-02-06 14:31:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:08,438 INFO L225 Difference]: With dead ends: 142 [2025-02-06 14:31:08,438 INFO L226 Difference]: Without dead ends: 109 [2025-02-06 14:31:08,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2025-02-06 14:31:08,439 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 79 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:08,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 244 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:31:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-06 14:31:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2025-02-06 14:31:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 71 states have internal predecessors, (76), 12 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (43), 15 states have call predecessors, (43), 11 states have call successors, (43) [2025-02-06 14:31:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 131 transitions. [2025-02-06 14:31:08,454 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 131 transitions. Word has length 24 [2025-02-06 14:31:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:08,455 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 131 transitions. [2025-02-06 14:31:08,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 131 transitions. [2025-02-06 14:31:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 14:31:08,456 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:08,456 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:08,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 14:31:08,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:08,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:08,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1779932149, now seen corresponding path program 2 times [2025-02-06 14:31:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:08,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518402786] [2025-02-06 14:31:08,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:08,667 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 14:31:08,673 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:31:08,673 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:08,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-06 14:31:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518402786] [2025-02-06 14:31:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518402786] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096369194] [2025-02-06 14:31:08,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:08,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:08,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 14:31:08,793 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 14:31:08,802 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:31:08,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:08,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:08,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 14:31:08,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-06 14:31:08,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:31:08,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096369194] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:08,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:31:08,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-06 14:31:08,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626696455] [2025-02-06 14:31:08,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:08,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:08,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:08,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:31:08,836 INFO L87 Difference]: Start difference. First operand 90 states and 131 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:08,859 INFO L93 Difference]: Finished difference Result 98 states and 142 transitions. [2025-02-06 14:31:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:08,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2025-02-06 14:31:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:08,861 INFO L225 Difference]: With dead ends: 98 [2025-02-06 14:31:08,861 INFO L226 Difference]: Without dead ends: 97 [2025-02-06 14:31:08,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:31:08,861 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:08,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-06 14:31:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2025-02-06 14:31:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 12 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (43), 17 states have call predecessors, (43), 11 states have call successors, (43) [2025-02-06 14:31:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2025-02-06 14:31:08,876 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 42 [2025-02-06 14:31:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:08,876 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2025-02-06 14:31:08,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2025-02-06 14:31:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-06 14:31:08,877 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:08,877 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:08,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:09,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:09,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:09,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash -213800611, now seen corresponding path program 1 times [2025-02-06 14:31:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661795700] [2025-02-06 14:31:09,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:09,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 14:31:09,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 14:31:09,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:09,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 14:31:09,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661795700] [2025-02-06 14:31:09,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661795700] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838494856] [2025-02-06 14:31:09,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:09,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:09,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:09,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:09,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 14:31:09,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 14:31:09,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 14:31:09,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:09,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:09,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 14:31:09,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:31:09,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 14:31:09,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838494856] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:09,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:09,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2025-02-06 14:31:09,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198095093] [2025-02-06 14:31:09,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:09,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:31:09,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:09,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:31:09,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:31:09,427 INFO L87 Difference]: Start difference. First operand 94 states and 135 transitions. Second operand has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:09,927 INFO L93 Difference]: Finished difference Result 336 states and 540 transitions. [2025-02-06 14:31:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 14:31:09,928 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2025-02-06 14:31:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:09,930 INFO L225 Difference]: With dead ends: 336 [2025-02-06 14:31:09,930 INFO L226 Difference]: Without dead ends: 251 [2025-02-06 14:31:09,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 14:31:09,932 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 226 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:09,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 457 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:31:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-02-06 14:31:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 225. [2025-02-06 14:31:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 177 states have (on average 1.0960451977401129) internal successors, (194), 176 states have internal predecessors, (194), 28 states have call successors, (28), 8 states have call predecessors, (28), 18 states have return successors, (94), 40 states have call predecessors, (94), 27 states have call successors, (94) [2025-02-06 14:31:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2025-02-06 14:31:09,955 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 37 [2025-02-06 14:31:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:09,956 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2025-02-06 14:31:09,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2025-02-06 14:31:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-06 14:31:09,957 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:09,957 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:09,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:10,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:10,158 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:10,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1080149815, now seen corresponding path program 1 times [2025-02-06 14:31:10,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:10,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-02-06 14:31:10,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:10,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:10,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-06 14:31:10,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 14:31:10,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:10,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2025-02-06 14:31:10,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:10,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-02-06 14:31:10,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274935796] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:10,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:10,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:31:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195361851] [2025-02-06 14:31:10,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:10,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:10,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:10,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:10,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:10,243 INFO L87 Difference]: Start difference. First operand 225 states and 316 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) [2025-02-06 14:31:10,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:10,277 INFO L93 Difference]: Finished difference Result 252 states and 360 transitions. [2025-02-06 14:31:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:10,278 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 56 [2025-02-06 14:31:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:10,280 INFO L225 Difference]: With dead ends: 252 [2025-02-06 14:31:10,282 INFO L226 Difference]: Without dead ends: 251 [2025-02-06 14:31:10,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:10,283 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:10,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 75 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-02-06 14:31:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 236. [2025-02-06 14:31:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 186 states have (on average 1.0913978494623655) internal successors, (203), 184 states have internal predecessors, (203), 30 states have call successors, (30), 8 states have call predecessors, (30), 18 states have return successors, (106), 43 states have call predecessors, (106), 29 states have call successors, (106) [2025-02-06 14:31:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 339 transitions. [2025-02-06 14:31:10,321 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 339 transitions. Word has length 56 [2025-02-06 14:31:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:10,321 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 339 transitions. [2025-02-06 14:31:10,321 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) [2025-02-06 14:31:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 339 transitions. [2025-02-06 14:31:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-06 14:31:10,325 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:10,325 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:10,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 14:31:10,328 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:10,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1582837461, now seen corresponding path program 1 times [2025-02-06 14:31:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:10,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097087433] [2025-02-06 14:31:10,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:10,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:10,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 14:31:10,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 14:31:10,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:10,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2025-02-06 14:31:10,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097087433] [2025-02-06 14:31:10,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097087433] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664175852] [2025-02-06 14:31:10,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:10,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:10,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:10,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:10,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 14:31:10,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 14:31:10,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 14:31:10,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:10,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:10,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:31:10,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 80 proven. 108 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 14:31:10,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 189 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664175852] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:10,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:10,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 26 [2025-02-06 14:31:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897786168] [2025-02-06 14:31:10,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:10,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 14:31:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:10,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 14:31:10,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2025-02-06 14:31:10,867 INFO L87 Difference]: Start difference. First operand 236 states and 339 transitions. Second operand has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:31:11,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:11,413 INFO L93 Difference]: Finished difference Result 597 states and 926 transitions. [2025-02-06 14:31:11,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 14:31:11,413 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 74 [2025-02-06 14:31:11,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:11,415 INFO L225 Difference]: With dead ends: 597 [2025-02-06 14:31:11,415 INFO L226 Difference]: Without dead ends: 382 [2025-02-06 14:31:11,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 125 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2025-02-06 14:31:11,418 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 325 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:11,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 473 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:31:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2025-02-06 14:31:11,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 350. [2025-02-06 14:31:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 276 states have (on average 1.0978260869565217) internal successors, (303), 275 states have internal predecessors, (303), 44 states have call successors, (44), 13 states have call predecessors, (44), 28 states have return successors, (131), 61 states have call predecessors, (131), 43 states have call successors, (131) [2025-02-06 14:31:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 478 transitions. [2025-02-06 14:31:11,460 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 478 transitions. Word has length 74 [2025-02-06 14:31:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:11,461 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 478 transitions. [2025-02-06 14:31:11,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:31:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 478 transitions. [2025-02-06 14:31:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-06 14:31:11,466 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:11,467 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 11, 11, 11, 11, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:11,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 14:31:11,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 14:31:11,668 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:11,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1714387328, now seen corresponding path program 2 times [2025-02-06 14:31:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283721167] [2025-02-06 14:31:11,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:11,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 106 statements into 2 equivalence classes. [2025-02-06 14:31:11,688 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 14:31:11,692 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:11,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-06 14:31:11,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:11,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283721167] [2025-02-06 14:31:11,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283721167] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:11,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566505377] [2025-02-06 14:31:11,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:11,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:11,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:11,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:11,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 14:31:11,792 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 106 statements into 2 equivalence classes. [2025-02-06 14:31:11,811 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 14:31:11,811 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:11,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:11,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 14:31:11,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 198 proven. 234 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-06 14:31:12,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 58 proven. 394 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 14:31:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566505377] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:12,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 27 [2025-02-06 14:31:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453499300] [2025-02-06 14:31:12,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:12,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 14:31:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:12,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 14:31:12,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2025-02-06 14:31:12,394 INFO L87 Difference]: Start difference. First operand 350 states and 478 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:12,912 INFO L93 Difference]: Finished difference Result 743 states and 1075 transitions. [2025-02-06 14:31:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 14:31:12,912 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 106 [2025-02-06 14:31:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:12,915 INFO L225 Difference]: With dead ends: 743 [2025-02-06 14:31:12,916 INFO L226 Difference]: Without dead ends: 414 [2025-02-06 14:31:12,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 178 SyntacticMatches, 20 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2025-02-06 14:31:12,920 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 371 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:12,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 547 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:31:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-06 14:31:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 380. [2025-02-06 14:31:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 300 states have (on average 1.0966666666666667) internal successors, (329), 298 states have internal predecessors, (329), 48 states have call successors, (48), 14 states have call predecessors, (48), 30 states have return successors, (142), 67 states have call predecessors, (142), 47 states have call successors, (142) [2025-02-06 14:31:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 519 transitions. [2025-02-06 14:31:12,947 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 519 transitions. Word has length 106 [2025-02-06 14:31:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:12,948 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 519 transitions. [2025-02-06 14:31:12,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 519 transitions. [2025-02-06 14:31:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 14:31:12,949 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:12,949 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:12,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 14:31:13,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:13,153 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:13,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash 334736119, now seen corresponding path program 1 times [2025-02-06 14:31:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:13,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948238622] [2025-02-06 14:31:13,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:13,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:13,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:31:13,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:31:13,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:13,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948238622] [2025-02-06 14:31:13,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948238622] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453123836] [2025-02-06 14:31:13,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:13,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:13,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:13,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:13,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 14:31:13,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:31:13,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:31:13,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:13,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:13,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 14:31:13,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:13,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:13,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453123836] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:13,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:13,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2025-02-06 14:31:13,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049996618] [2025-02-06 14:31:13,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:13,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 14:31:13,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:13,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 14:31:13,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:31:13,795 INFO L87 Difference]: Start difference. First operand 380 states and 519 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:31:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:14,244 INFO L93 Difference]: Finished difference Result 725 states and 1047 transitions. [2025-02-06 14:31:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 14:31:14,245 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2025-02-06 14:31:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:14,247 INFO L225 Difference]: With dead ends: 725 [2025-02-06 14:31:14,247 INFO L226 Difference]: Without dead ends: 366 [2025-02-06 14:31:14,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 174 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=511, Invalid=1295, Unknown=0, NotChecked=0, Total=1806 [2025-02-06 14:31:14,250 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 561 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:14,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 175 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:31:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2025-02-06 14:31:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 340. [2025-02-06 14:31:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 267 states have (on average 1.0936329588014981) internal successors, (292), 269 states have internal predecessors, (292), 43 states have call successors, (43), 14 states have call predecessors, (43), 28 states have return successors, (84), 56 states have call predecessors, (84), 42 states have call successors, (84) [2025-02-06 14:31:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 419 transitions. [2025-02-06 14:31:14,268 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 419 transitions. Word has length 93 [2025-02-06 14:31:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:14,268 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 419 transitions. [2025-02-06 14:31:14,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:31:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 419 transitions. [2025-02-06 14:31:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-02-06 14:31:14,269 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:14,269 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:14,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 14:31:14,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 14:31:14,470 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:14,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1074906584, now seen corresponding path program 2 times [2025-02-06 14:31:14,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:14,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230777663] [2025-02-06 14:31:14,470 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:14,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:14,474 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-06 14:31:14,484 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-06 14:31:14,486 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:14,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-02-06 14:31:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:14,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230777663] [2025-02-06 14:31:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230777663] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643365068] [2025-02-06 14:31:14,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:14,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:14,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:14,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:14,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 14:31:14,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-06 14:31:14,650 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-06 14:31:14,650 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:14,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:14,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 14:31:14,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2025-02-06 14:31:14,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2025-02-06 14:31:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643365068] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:14,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:14,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-02-06 14:31:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105126633] [2025-02-06 14:31:14,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:14,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 14:31:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:14,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 14:31:14,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:31:14,857 INFO L87 Difference]: Start difference. First operand 340 states and 419 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:14,958 INFO L93 Difference]: Finished difference Result 350 states and 431 transitions. [2025-02-06 14:31:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:31:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 87 [2025-02-06 14:31:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:14,961 INFO L225 Difference]: With dead ends: 350 [2025-02-06 14:31:14,961 INFO L226 Difference]: Without dead ends: 348 [2025-02-06 14:31:14,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:31:14,962 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:14,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 159 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:31:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-02-06 14:31:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2025-02-06 14:31:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 267 states have (on average 1.0823970037453183) internal successors, (289), 269 states have internal predecessors, (289), 43 states have call successors, (43), 14 states have call predecessors, (43), 28 states have return successors, (84), 56 states have call predecessors, (84), 42 states have call successors, (84) [2025-02-06 14:31:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 416 transitions. [2025-02-06 14:31:14,985 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 416 transitions. Word has length 87 [2025-02-06 14:31:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:14,985 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 416 transitions. [2025-02-06 14:31:14,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 416 transitions. [2025-02-06 14:31:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-06 14:31:14,988 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:14,988 INFO L218 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 14:31:14,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:15,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:15,193 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:15,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1950989099, now seen corresponding path program 3 times [2025-02-06 14:31:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:15,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025504808] [2025-02-06 14:31:15,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:15,199 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 12 equivalence classes. [2025-02-06 14:31:15,204 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 104 statements. [2025-02-06 14:31:15,204 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 14:31:15,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-02-06 14:31:15,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:15,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025504808] [2025-02-06 14:31:15,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025504808] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:15,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843539171] [2025-02-06 14:31:15,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:15,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:15,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:15,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:15,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 14:31:15,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 12 equivalence classes. [2025-02-06 14:31:15,275 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 104 statements. [2025-02-06 14:31:15,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 14:31:15,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:15,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 14:31:15,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2025-02-06 14:31:15,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:31:15,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843539171] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:15,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:31:15,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2025-02-06 14:31:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873480391] [2025-02-06 14:31:15,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:15,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:31:15,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:15,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:31:15,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:31:15,299 INFO L87 Difference]: Start difference. First operand 340 states and 416 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:31:15,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:15,345 INFO L93 Difference]: Finished difference Result 536 states and 688 transitions. [2025-02-06 14:31:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:31:15,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 104 [2025-02-06 14:31:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:15,347 INFO L225 Difference]: With dead ends: 536 [2025-02-06 14:31:15,347 INFO L226 Difference]: Without dead ends: 217 [2025-02-06 14:31:15,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:31:15,349 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:15,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-06 14:31:15,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2025-02-06 14:31:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.1235294117647059) internal successors, (191), 172 states have internal predecessors, (191), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 248 transitions. [2025-02-06 14:31:15,361 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 248 transitions. Word has length 104 [2025-02-06 14:31:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:15,361 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 248 transitions. [2025-02-06 14:31:15,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:31:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 248 transitions. [2025-02-06 14:31:15,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-06 14:31:15,362 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:15,362 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 10, 10, 10, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-02-06 14:31:15,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:15,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:15,562 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:15,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1753914713, now seen corresponding path program 4 times [2025-02-06 14:31:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:15,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25357906] [2025-02-06 14:31:15,563 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:15,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:15,567 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 119 statements into 2 equivalence classes. [2025-02-06 14:31:15,575 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-02-06 14:31:15,576 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:15,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-02-06 14:31:15,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25357906] [2025-02-06 14:31:15,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25357906] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517671865] [2025-02-06 14:31:15,757 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:15,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:15,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:15,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:15,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 14:31:15,783 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 119 statements into 2 equivalence classes. [2025-02-06 14:31:15,802 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-02-06 14:31:15,802 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:15,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:15,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:31:15,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2025-02-06 14:31:15,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2025-02-06 14:31:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517671865] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:16,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 22 [2025-02-06 14:31:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576233648] [2025-02-06 14:31:16,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:16,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:31:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:16,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:31:16,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:31:16,296 INFO L87 Difference]: Start difference. First operand 215 states and 248 transitions. Second operand has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-06 14:31:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:16,356 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2025-02-06 14:31:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:31:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) Word has length 119 [2025-02-06 14:31:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:16,357 INFO L225 Difference]: With dead ends: 215 [2025-02-06 14:31:16,358 INFO L226 Difference]: Without dead ends: 214 [2025-02-06 14:31:16,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 227 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:31:16,358 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:16,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-06 14:31:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-06 14:31:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0588235294117647) internal successors, (180), 171 states have internal predecessors, (180), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 237 transitions. [2025-02-06 14:31:16,367 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 237 transitions. Word has length 119 [2025-02-06 14:31:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:16,367 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 237 transitions. [2025-02-06 14:31:16,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-06 14:31:16,367 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 237 transitions. [2025-02-06 14:31:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-06 14:31:16,368 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:16,368 INFO L218 NwaCegarLoop]: trace histogram [20, 17, 14, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2025-02-06 14:31:16,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:16,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:16,569 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:16,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash 309160204, now seen corresponding path program 3 times [2025-02-06 14:31:16,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:16,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079402560] [2025-02-06 14:31:16,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:16,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:16,574 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 173 statements into 17 equivalence classes. [2025-02-06 14:31:16,585 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 173 statements. [2025-02-06 14:31:16,585 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 14:31:16,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-02-06 14:31:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079402560] [2025-02-06 14:31:17,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079402560] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815515723] [2025-02-06 14:31:17,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:17,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:17,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:17,084 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 14:31:17,120 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 173 statements into 17 equivalence classes. [2025-02-06 14:31:17,144 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 173 statements. [2025-02-06 14:31:17,144 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 14:31:17,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:17,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 14:31:17,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2025-02-06 14:31:17,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2025-02-06 14:31:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815515723] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:18,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:18,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2025-02-06 14:31:18,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80668888] [2025-02-06 14:31:18,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:18,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-06 14:31:18,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:18,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-06 14:31:18,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2025-02-06 14:31:18,182 INFO L87 Difference]: Start difference. First operand 214 states and 237 transitions. Second operand has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-02-06 14:31:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:18,254 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2025-02-06 14:31:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:31:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) Word has length 173 [2025-02-06 14:31:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:18,256 INFO L225 Difference]: With dead ends: 215 [2025-02-06 14:31:18,256 INFO L226 Difference]: Without dead ends: 214 [2025-02-06 14:31:18,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 330 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 14:31:18,257 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:18,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 118 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-06 14:31:18,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-06 14:31:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.035294117647059) internal successors, (176), 171 states have internal predecessors, (176), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 233 transitions. [2025-02-06 14:31:18,269 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 233 transitions. Word has length 173 [2025-02-06 14:31:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:18,269 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 233 transitions. [2025-02-06 14:31:18,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-02-06 14:31:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 233 transitions. [2025-02-06 14:31:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2025-02-06 14:31:18,274 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:18,274 INFO L218 NwaCegarLoop]: trace histogram [44, 40, 36, 23, 23, 23, 23, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2025-02-06 14:31:18,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:18,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 14:31:18,478 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:18,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash -279767691, now seen corresponding path program 4 times [2025-02-06 14:31:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517663371] [2025-02-06 14:31:18,479 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:18,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:18,492 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 416 statements into 2 equivalence classes. [2025-02-06 14:31:18,520 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 416 of 416 statements. [2025-02-06 14:31:18,520 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:18,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-02-06 14:31:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517663371] [2025-02-06 14:31:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517663371] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869733173] [2025-02-06 14:31:20,520 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:20,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:20,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:20,526 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:20,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 14:31:20,580 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 416 statements into 2 equivalence classes. [2025-02-06 14:31:20,642 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 416 of 416 statements. [2025-02-06 14:31:20,642 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:20,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:20,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-06 14:31:20,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-02-06 14:31:21,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-06 14:31:26,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869733173] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:26,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:26,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2025-02-06 14:31:26,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071531155] [2025-02-06 14:31:26,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:26,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 14:31:26,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:26,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 14:31:26,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 14:31:26,723 INFO L87 Difference]: Start difference. First operand 214 states and 233 transitions. Second operand has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-06 14:31:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:26,807 INFO L93 Difference]: Finished difference Result 215 states and 233 transitions. [2025-02-06 14:31:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 14:31:26,808 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 416 [2025-02-06 14:31:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:26,810 INFO L225 Difference]: With dead ends: 215 [2025-02-06 14:31:26,810 INFO L226 Difference]: Without dead ends: 214 [2025-02-06 14:31:26,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 810 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 14:31:26,813 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:26,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 196 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:31:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-06 14:31:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-06 14:31:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0176470588235293) internal successors, (173), 171 states have internal predecessors, (173), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 230 transitions. [2025-02-06 14:31:26,822 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 230 transitions. Word has length 416 [2025-02-06 14:31:26,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:26,823 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 230 transitions. [2025-02-06 14:31:26,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-06 14:31:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 230 transitions. [2025-02-06 14:31:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2025-02-06 14:31:26,838 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:26,839 INFO L218 NwaCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2025-02-06 14:31:26,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 14:31:27,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 14:31:27,043 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:27,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash -417071150, now seen corresponding path program 5 times [2025-02-06 14:31:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:27,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510519227] [2025-02-06 14:31:27,044 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:31:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:27,068 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1071 statements into 76 equivalence classes. [2025-02-06 14:31:27,221 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-02-06 14:31:27,221 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-02-06 14:31:27,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7588 proven. 10182 refuted. 0 times theorem prover too weak. 24164 trivial. 0 not checked. [2025-02-06 14:31:40,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510519227] [2025-02-06 14:31:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510519227] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674130064] [2025-02-06 14:31:40,959 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:31:40,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:40,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:31:40,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 14:31:41,097 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1071 statements into 76 equivalence classes. [2025-02-06 14:31:41,359 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-02-06 14:31:41,359 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-02-06 14:31:41,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:41,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 217 conjuncts are in the unsatisfiable core [2025-02-06 14:31:41,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2025-02-06 14:31:42,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2025-02-06 14:32:16,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674130064] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:16,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:16,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 41] total 61 [2025-02-06 14:32:16,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217874952] [2025-02-06 14:32:16,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:16,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-02-06 14:32:16,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:16,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-02-06 14:32:16,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=853, Invalid=2929, Unknown=0, NotChecked=0, Total=3782 [2025-02-06 14:32:16,270 INFO L87 Difference]: Start difference. First operand 214 states and 230 transitions. Second operand has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2025-02-06 14:32:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:16,380 INFO L93 Difference]: Finished difference Result 214 states and 230 transitions. [2025-02-06 14:32:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 14:32:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) Word has length 1071 [2025-02-06 14:32:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:16,384 INFO L225 Difference]: With dead ends: 214 [2025-02-06 14:32:16,384 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 14:32:16,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2359 GetRequests, 2105 SyntacticMatches, 192 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7608 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=916, Invalid=3116, Unknown=0, NotChecked=0, Total=4032 [2025-02-06 14:32:16,386 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:16,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 207 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 14:32:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 14:32:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 14:32:16,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1071 [2025-02-06 14:32:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:16,387 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 14:32:16,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2025-02-06 14:32:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 14:32:16,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 14:32:16,390 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2025-02-06 14:32:16,390 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2025-02-06 14:32:16,390 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2025-02-06 14:32:16,390 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2025-02-06 14:32:16,390 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2025-02-06 14:32:16,390 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2025-02-06 14:32:16,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:16,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:16,598 INFO L422 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1] [2025-02-06 14:32:16,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-06 14:32:17,496 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 14:32:17,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 02:32:17 BoogieIcfgContainer [2025-02-06 14:32:17,500 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 14:32:17,500 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 14:32:17,500 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 14:32:17,501 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 14:32:17,501 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:31:07" (3/4) ... [2025-02-06 14:32:17,503 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 14:32:17,508 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo [2025-02-06 14:32:17,510 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-06 14:32:17,510 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-06 14:32:17,511 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 14:32:17,511 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 14:32:17,558 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 14:32:17,559 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 14:32:17,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 14:32:17,559 INFO L158 Benchmark]: Toolchain (without parser) took 70807.49ms. Allocated memory was 142.6MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 112.8MB in the beginning and 1.1GB in the end (delta: -976.9MB). Peak memory consumption was 774.5MB. Max. memory is 16.1GB. [2025-02-06 14:32:17,560 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 14:32:17,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.23ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 102.6MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 14:32:17,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.70ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 101.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 14:32:17,560 INFO L158 Benchmark]: Boogie Preprocessor took 22.17ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.5MB in the end (delta: 996.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 14:32:17,560 INFO L158 Benchmark]: IcfgBuilder took 161.76ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 90.0MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 14:32:17,560 INFO L158 Benchmark]: TraceAbstraction took 70401.85ms. Allocated memory was 142.6MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 89.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 740.9MB. Max. memory is 16.1GB. [2025-02-06 14:32:17,560 INFO L158 Benchmark]: Witness Printer took 58.44ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 14:32:17,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.23ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 102.6MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.70ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 101.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.17ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.5MB in the end (delta: 996.9kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 161.76ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 90.0MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 70401.85ms. Allocated memory was 142.6MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 89.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 740.9MB. Max. memory is 16.1GB. * Witness Printer took 58.44ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 69.5s, OverallIterations: 16, TraceHistogramMax: 110, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1686 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1652 mSDsluCounter, 2996 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2500 mSDsCounter, 392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3965 IncrementalHoareTripleChecker+Invalid, 4357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 392 mSolverCounterUnsat, 496 mSDtfsCounter, 3965 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5061 GetRequests, 4369 SyntacticMatches, 327 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11745 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=9, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 172 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 62.0s InterpolantComputationTime, 4786 NumberOfCodeBlocks, 4574 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 6948 ConstructedInterpolants, 0 QuantifiedInterpolants, 16288 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4346 ConjunctsInSsa, 437 ConjunctsInUnsatCore, 38 InterpolantComputations, 6 PerfectInterpolantSequences, 123709/154389 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 14:32:17,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE