./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 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_5-1.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 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 02:32:31,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 02:32:31,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 02:32:31,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 02:32:31,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 02:32:31,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 02:32:31,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 02:32:31,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 02:32:31,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 02:32:31,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 02:32:31,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 02:32:31,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 02:32:31,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 02:32:31,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 02:32:31,959 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 02:32:31,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 02:32:31,960 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 02:32:31,961 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 02:32:31,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 02:32:31,961 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 02:32:31,961 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 02:32:31,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 02:32:31,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:32:31,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:32:31,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:32:31,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:32:31,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 02:32:31,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 02:32:31,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 02:32:31,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 02:32:31,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 02:32:31,963 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 -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2025-01-10 02:32:32,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 02:32:32,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 02:32:32,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 02:32:32,201 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 02:32:32,201 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 02:32:32,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2025-01-10 02:32:33,293 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5f6f50de/72986ba92c324dae8b4c1b21fb2138f3/FLAG42084080b [2025-01-10 02:32:33,483 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 02:32:33,484 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2025-01-10 02:32:33,494 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5f6f50de/72986ba92c324dae8b4c1b21fb2138f3/FLAG42084080b [2025-01-10 02:32:33,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5f6f50de/72986ba92c324dae8b4c1b21fb2138f3 [2025-01-10 02:32:33,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 02:32:33,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 02:32:33,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 02:32:33,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 02:32:33,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 02:32:33,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:33,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2992ca7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33, skipping insertion in model container [2025-01-10 02:32:33,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:33,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 02:32:33,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:32:33,971 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 02:32:33,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:32:33,992 INFO L204 MainTranslator]: Completed translation [2025-01-10 02:32:33,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33 WrapperNode [2025-01-10 02:32:33,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 02:32:33,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 02:32:33,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 02:32:33,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 02:32:34,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,016 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-01-10 02:32:34,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 02:32:34,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 02:32:34,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 02:32:34,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 02:32:34,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,037 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]. [2025-01-10 02:32:34,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,039 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 02:32:34,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 02:32:34,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 02:32:34,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 02:32:34,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (1/1) ... [2025-01-10 02:32:34,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:32:34,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:34,076 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) [2025-01-10 02:32:34,079 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 [2025-01-10 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 02:32:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 02:32:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-01-10 02:32:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-01-10 02:32:34,133 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 02:32:34,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 02:32:34,209 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-01-10 02:32:34,209 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 02:32:34,215 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 02:32:34,215 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 02:32:34,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:34 BoogieIcfgContainer [2025-01-10 02:32:34,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 02:32:34,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 02:32:34,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 02:32:34,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 02:32:34,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:32:33" (1/3) ... [2025-01-10 02:32:34,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1894b3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:34, skipping insertion in model container [2025-01-10 02:32:34,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:32:33" (2/3) ... [2025-01-10 02:32:34,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1894b3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:32:34, skipping insertion in model container [2025-01-10 02:32:34,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:34" (3/3) ... [2025-01-10 02:32:34,226 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2025-01-10 02:32:34,236 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 02:32:34,237 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_5-1.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-01-10 02:32:34,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 02:32:34,283 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;@f8511fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 02:32:34,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-10 02:32:34,287 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) [2025-01-10 02:32:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-10 02:32:34,291 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:34,291 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:34,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1842216079, now seen corresponding path program 1 times [2025-01-10 02:32:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462355571] [2025-01-10 02:32:34,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 02:32:34,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 02:32:34,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:34,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462355571] [2025-01-10 02:32:34,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462355571] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:34,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:34,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 02:32:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886188005] [2025-01-10 02:32:34,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:34,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 02:32:34,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:34,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 02:32:34,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 02:32:34,440 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) [2025-01-10 02:32:34,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:34,480 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-01-10 02:32:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 02:32:34,482 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 [2025-01-10 02:32:34,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:34,487 INFO L225 Difference]: With dead ends: 38 [2025-01-10 02:32:34,487 INFO L226 Difference]: Without dead ends: 24 [2025-01-10 02:32:34,490 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 [2025-01-10 02:32:34,491 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 [2025-01-10 02:32:34,492 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] [2025-01-10 02:32:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-10 02:32:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-01-10 02:32:34,516 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) [2025-01-10 02:32:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-01-10 02:32:34,521 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-01-10 02:32:34,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:34,522 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-01-10 02:32:34,522 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) [2025-01-10 02:32:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-01-10 02:32:34,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-10 02:32:34,523 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,523 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:34,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 02:32:34,524 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:34,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1274123662, now seen corresponding path program 1 times [2025-01-10 02:32:34,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588018253] [2025-01-10 02:32:34,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 02:32:34,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 02:32:34,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:34,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588018253] [2025-01-10 02:32:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588018253] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:34,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:34,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:34,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569596702] [2025-01-10 02:32:34,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:34,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:34,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:34,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:34,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,600 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) [2025-01-10 02:32:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:34,665 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-01-10 02:32:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:34,665 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 [2025-01-10 02:32:34,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:34,666 INFO L225 Difference]: With dead ends: 24 [2025-01-10 02:32:34,666 INFO L226 Difference]: Without dead ends: 22 [2025-01-10 02:32:34,666 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 [2025-01-10 02:32:34,667 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 [2025-01-10 02:32:34,668 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] [2025-01-10 02:32:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-10 02:32:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-01-10 02:32:34,674 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) [2025-01-10 02:32:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-01-10 02:32:34,675 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-01-10 02:32:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:34,675 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-01-10 02:32:34,675 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) [2025-01-10 02:32:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-01-10 02:32:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-10 02:32:34,677 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,677 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:34,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 02:32:34,677 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:34,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash 572400255, now seen corresponding path program 1 times [2025-01-10 02:32:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918481240] [2025-01-10 02:32:34,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 02:32:34,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 02:32:34,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:32:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918481240] [2025-01-10 02:32:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918481240] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:34,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:34,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:34,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796143300] [2025-01-10 02:32:34,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:34,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:34,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:34,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:34,802 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) [2025-01-10 02:32:34,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:34,843 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-01-10 02:32:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:34,843 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 [2025-01-10 02:32:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:34,844 INFO L225 Difference]: With dead ends: 34 [2025-01-10 02:32:34,844 INFO L226 Difference]: Without dead ends: 32 [2025-01-10 02:32:34,844 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 [2025-01-10 02:32:34,845 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:34,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 65 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-01-10 02:32:34,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-01-10 02:32:34,849 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) [2025-01-10 02:32:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-01-10 02:32:34,851 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2025-01-10 02:32:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:34,852 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-01-10 02:32:34,852 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) [2025-01-10 02:32:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-01-10 02:32:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-10 02:32:34,853 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:34,853 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] [2025-01-10 02:32:34,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 02:32:34,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:34,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash 576376328, now seen corresponding path program 1 times [2025-01-10 02:32:34,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:34,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519411762] [2025-01-10 02:32:34,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:34,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:32:34,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:32:34,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:34,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-10 02:32:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:34,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519411762] [2025-01-10 02:32:34,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519411762] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:34,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848519563] [2025-01-10 02:32:34,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:34,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:34,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:34,963 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) [2025-01-10 02:32:34,964 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 [2025-01-10 02:32:35,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:32:35,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:32:35,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:35,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:35,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 02:32:35,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:35,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:32:35,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848519563] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:35,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:35,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-01-10 02:32:35,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071760082] [2025-01-10 02:32:35,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:35,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 02:32:35,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:35,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 02:32:35,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:32:35,195 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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) [2025-01-10 02:32:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:35,548 INFO L93 Difference]: Finished difference Result 126 states and 180 transitions. [2025-01-10 02:32:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 02:32:35,549 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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 [2025-01-10 02:32:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:35,550 INFO L225 Difference]: With dead ends: 126 [2025-01-10 02:32:35,550 INFO L226 Difference]: Without dead ends: 93 [2025-01-10 02:32:35,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:32:35,552 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 113 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:35,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 199 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:32:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-10 02:32:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2025-01-10 02:32:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2025-01-10 02:32:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2025-01-10 02:32:35,572 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2025-01-10 02:32:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:35,572 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2025-01-10 02:32:35,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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) [2025-01-10 02:32:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2025-01-10 02:32:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-10 02:32:35,576 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:35,576 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:35,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:35,776 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 [2025-01-10 02:32:35,777 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:35,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1418214692, now seen corresponding path program 2 times [2025-01-10 02:32:35,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:35,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176530038] [2025-01-10 02:32:35,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:35,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:35,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 02:32:35,791 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:32:35,791 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:35,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:32:35,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:35,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176530038] [2025-01-10 02:32:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176530038] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:35,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681477326] [2025-01-10 02:32:35,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:35,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:35,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:35,872 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) [2025-01-10 02:32:35,872 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 [2025-01-10 02:32:35,889 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 02:32:35,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:32:35,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:35,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:35,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 02:32:35,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:32:35,945 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:32:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681477326] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:35,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:32:35,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-01-10 02:32:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144547903] [2025-01-10 02:32:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:35,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:35,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:35,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:35,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:32:35,946 INFO L87 Difference]: Start difference. First operand 81 states and 112 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) [2025-01-10 02:32:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:35,976 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2025-01-10 02:32:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:35,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2025-01-10 02:32:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:35,980 INFO L225 Difference]: With dead ends: 101 [2025-01-10 02:32:35,981 INFO L226 Difference]: Without dead ends: 100 [2025-01-10 02:32:35,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:32:35,981 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:35,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-01-10 02:32:35,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2025-01-10 02:32:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 68 states have internal predecessors, (74), 11 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (39), 15 states have call predecessors, (39), 10 states have call successors, (39) [2025-01-10 02:32:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2025-01-10 02:32:35,995 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 30 [2025-01-10 02:32:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:35,996 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2025-01-10 02:32:35,996 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) [2025-01-10 02:32:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2025-01-10 02:32:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-10 02:32:35,997 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:35,997 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:36,003 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 [2025-01-10 02:32:36,198 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 [2025-01-10 02:32:36,198 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:36,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1014982419, now seen corresponding path program 1 times [2025-01-10 02:32:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:36,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865336915] [2025-01-10 02:32:36,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:36,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:32:36,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:32:36,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:36,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:32:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865336915] [2025-01-10 02:32:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865336915] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120279535] [2025-01-10 02:32:36,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:36,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:36,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:36,280 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) [2025-01-10 02:32:36,283 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 [2025-01-10 02:32:36,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:32:36,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:32:36,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:36,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:36,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 02:32:36,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:32:36,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:32:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120279535] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:36,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:36,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 17 [2025-01-10 02:32:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143341840] [2025-01-10 02:32:36,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:36,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 02:32:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:36,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 02:32:36,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2025-01-10 02:32:36,510 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:32:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:37,013 INFO L93 Difference]: Finished difference Result 270 states and 420 transitions. [2025-01-10 02:32:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 02:32:37,014 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 31 [2025-01-10 02:32:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:37,015 INFO L225 Difference]: With dead ends: 270 [2025-01-10 02:32:37,015 INFO L226 Difference]: Without dead ends: 192 [2025-01-10 02:32:37,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2025-01-10 02:32:37,017 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 103 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:37,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 260 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:32:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-01-10 02:32:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2025-01-10 02:32:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 124 states have internal predecessors, (137), 20 states have call successors, (20), 5 states have call predecessors, (20), 12 states have return successors, (89), 30 states have call predecessors, (89), 19 states have call successors, (89) [2025-01-10 02:32:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 246 transitions. [2025-01-10 02:32:37,064 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 246 transitions. Word has length 31 [2025-01-10 02:32:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:37,064 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 246 transitions. [2025-01-10 02:32:37,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:32:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 246 transitions. [2025-01-10 02:32:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-10 02:32:37,065 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:37,065 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:37,072 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 [2025-01-10 02:32:37,270 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 [2025-01-10 02:32:37,270 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:37,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1600174322, now seen corresponding path program 1 times [2025-01-10 02:32:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:37,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830671578] [2025-01-10 02:32:37,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:37,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 02:32:37,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 02:32:37,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:37,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-01-10 02:32:37,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:37,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830671578] [2025-01-10 02:32:37,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830671578] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:32:37,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:32:37,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:32:37,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035675145] [2025-01-10 02:32:37,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:32:37,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:32:37,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:37,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:32:37,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:32:37,335 INFO L87 Difference]: Start difference. First operand 160 states and 246 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) [2025-01-10 02:32:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:37,368 INFO L93 Difference]: Finished difference Result 174 states and 268 transitions. [2025-01-10 02:32:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:32:37,368 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 44 [2025-01-10 02:32:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:37,370 INFO L225 Difference]: With dead ends: 174 [2025-01-10 02:32:37,370 INFO L226 Difference]: Without dead ends: 173 [2025-01-10 02:32:37,370 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 [2025-01-10 02:32:37,371 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:37,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-01-10 02:32:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2025-01-10 02:32:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 132 states have (on average 1.0833333333333333) internal successors, (143), 129 states have internal predecessors, (143), 21 states have call successors, (21), 5 states have call predecessors, (21), 12 states have return successors, (95), 32 states have call predecessors, (95), 20 states have call successors, (95) [2025-01-10 02:32:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 259 transitions. [2025-01-10 02:32:37,390 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 259 transitions. Word has length 44 [2025-01-10 02:32:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:37,390 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 259 transitions. [2025-01-10 02:32:37,390 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) [2025-01-10 02:32:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 259 transitions. [2025-01-10 02:32:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-10 02:32:37,395 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:37,396 INFO L218 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:37,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 02:32:37,396 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:37,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash 661403234, now seen corresponding path program 1 times [2025-01-10 02:32:37,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:37,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30560872] [2025-01-10 02:32:37,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:37,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 02:32:37,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 02:32:37,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:37,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-01-10 02:32:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:37,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30560872] [2025-01-10 02:32:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30560872] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294081695] [2025-01-10 02:32:37,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:37,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:37,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:37,481 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) [2025-01-10 02:32:37,486 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 [2025-01-10 02:32:37,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 02:32:37,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 02:32:37,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:37,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:37,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:32:37,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 69 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 02:32:37,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 69 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 02:32:37,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294081695] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:37,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:37,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 22 [2025-01-10 02:32:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529285414] [2025-01-10 02:32:37,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:37,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 02:32:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:37,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 02:32:37,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:32:37,875 INFO L87 Difference]: Start difference. First operand 167 states and 259 transitions. Second operand has 22 states, 20 states have (on average 3.85) internal successors, (77), 16 states have internal predecessors, (77), 11 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-10 02:32:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:38,279 INFO L93 Difference]: Finished difference Result 308 states and 492 transitions. [2025-01-10 02:32:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-10 02:32:38,280 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 16 states have internal predecessors, (77), 11 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 67 [2025-01-10 02:32:38,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:38,282 INFO L225 Difference]: With dead ends: 308 [2025-01-10 02:32:38,283 INFO L226 Difference]: Without dead ends: 158 [2025-01-10 02:32:38,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2025-01-10 02:32:38,286 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 254 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:38,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 130 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:32:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-01-10 02:32:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 147. [2025-01-10 02:32:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 116 states have (on average 1.0775862068965518) internal successors, (125), 115 states have internal predecessors, (125), 18 states have call successors, (18), 6 states have call predecessors, (18), 11 states have return successors, (34), 25 states have call predecessors, (34), 17 states have call successors, (34) [2025-01-10 02:32:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 177 transitions. [2025-01-10 02:32:38,300 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 177 transitions. Word has length 67 [2025-01-10 02:32:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:38,300 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 177 transitions. [2025-01-10 02:32:38,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 16 states have internal predecessors, (77), 11 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-10 02:32:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 177 transitions. [2025-01-10 02:32:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-01-10 02:32:38,305 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:38,305 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:38,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 02:32:38,505 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 [2025-01-10 02:32:38,505 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:38,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:38,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2005517529, now seen corresponding path program 1 times [2025-01-10 02:32:38,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:38,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80974648] [2025-01-10 02:32:38,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:38,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:38,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 02:32:38,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 02:32:38,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:38,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-01-10 02:32:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80974648] [2025-01-10 02:32:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80974648] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911281422] [2025-01-10 02:32:38,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:32:38,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:38,559 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) [2025-01-10 02:32:38,560 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 [2025-01-10 02:32:38,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 02:32:38,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 02:32:38,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:32:38,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:38,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:32:38,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:32:38,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 02:32:38,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911281422] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:38,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:38,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 13] total 16 [2025-01-10 02:32:38,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50520788] [2025-01-10 02:32:38,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:38,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:32:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:38,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:32:38,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:32:38,881 INFO L87 Difference]: Start difference. First operand 147 states and 177 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 10 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2025-01-10 02:32:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:39,022 INFO L93 Difference]: Finished difference Result 213 states and 256 transitions. [2025-01-10 02:32:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:32:39,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 10 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) Word has length 56 [2025-01-10 02:32:39,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:39,023 INFO L225 Difference]: With dead ends: 213 [2025-01-10 02:32:39,023 INFO L226 Difference]: Without dead ends: 88 [2025-01-10 02:32:39,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:32:39,024 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 92 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:39,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 167 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:32:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-10 02:32:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2025-01-10 02:32:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 68 states have internal predecessors, (72), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-10 02:32:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2025-01-10 02:32:39,030 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 56 [2025-01-10 02:32:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:39,031 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2025-01-10 02:32:39,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 10 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2025-01-10 02:32:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2025-01-10 02:32:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-10 02:32:39,032 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:39,033 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:32:39,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:39,233 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 [2025-01-10 02:32:39,233 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:39,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:39,234 INFO L85 PathProgramCache]: Analyzing trace with hash -587569672, now seen corresponding path program 2 times [2025-01-10 02:32:39,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:39,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637625362] [2025-01-10 02:32:39,234 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:39,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:39,237 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-01-10 02:32:39,245 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 02:32:39,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:39,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-01-10 02:32:39,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:39,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637625362] [2025-01-10 02:32:39,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637625362] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:39,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999198621] [2025-01-10 02:32:39,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:39,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:39,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:39,338 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) [2025-01-10 02:32:39,340 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 [2025-01-10 02:32:39,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-01-10 02:32:39,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 02:32:39,369 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:39,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:39,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:32:39,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-01-10 02:32:39,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-01-10 02:32:39,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999198621] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:39,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-01-10 02:32:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672154802] [2025-01-10 02:32:39,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:39,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:32:39,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:39,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:32:39,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:32:39,573 INFO L87 Difference]: Start difference. First operand 85 states and 93 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) [2025-01-10 02:32:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:39,635 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2025-01-10 02:32:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 02:32:39,635 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 57 [2025-01-10 02:32:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:39,636 INFO L225 Difference]: With dead ends: 86 [2025-01-10 02:32:39,637 INFO L226 Difference]: Without dead ends: 85 [2025-01-10 02:32:39,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-01-10 02:32:39,638 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:39,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 172 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-01-10 02:32:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2025-01-10 02:32:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 68 states have internal predecessors, (69), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-10 02:32:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2025-01-10 02:32:39,645 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 57 [2025-01-10 02:32:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:39,645 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2025-01-10 02:32:39,645 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) [2025-01-10 02:32:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2025-01-10 02:32:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-01-10 02:32:39,646 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:39,646 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-01-10 02:32:39,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:39,846 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 [2025-01-10 02:32:39,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:39,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash -988143200, now seen corresponding path program 2 times [2025-01-10 02:32:39,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:39,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177926954] [2025-01-10 02:32:39,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:39,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:39,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-01-10 02:32:39,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 02:32:39,858 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:39,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 14 proven. 64 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2025-01-10 02:32:40,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177926954] [2025-01-10 02:32:40,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177926954] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385740369] [2025-01-10 02:32:40,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:32:40,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:40,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:40,095 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) [2025-01-10 02:32:40,097 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 [2025-01-10 02:32:40,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-01-10 02:32:40,131 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 02:32:40,131 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:32:40,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:40,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:32:40,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 25 proven. 54 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2025-01-10 02:32:40,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-01-10 02:32:40,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385740369] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:40,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:40,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2025-01-10 02:32:40,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270314963] [2025-01-10 02:32:40,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:40,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 02:32:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:40,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 02:32:40,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:32:40,489 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2025-01-10 02:32:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:40,570 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2025-01-10 02:32:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 02:32:40,570 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) Word has length 89 [2025-01-10 02:32:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:40,571 INFO L225 Difference]: With dead ends: 85 [2025-01-10 02:32:40,571 INFO L226 Difference]: Without dead ends: 84 [2025-01-10 02:32:40,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2025-01-10 02:32:40,572 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:40,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 227 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:32:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-01-10 02:32:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-01-10 02:32:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 67 states have internal predecessors, (67), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-10 02:32:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2025-01-10 02:32:40,576 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 89 [2025-01-10 02:32:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:40,576 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2025-01-10 02:32:40,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2025-01-10 02:32:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2025-01-10 02:32:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-01-10 02:32:40,577 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:40,577 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2025-01-10 02:32:40,583 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 [2025-01-10 02:32:40,778 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 [2025-01-10 02:32:40,778 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:40,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash -765707805, now seen corresponding path program 3 times [2025-01-10 02:32:40,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:40,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36981513] [2025-01-10 02:32:40,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:32:40,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:40,784 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 143 statements into 12 equivalence classes. [2025-01-10 02:32:40,798 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 143 statements. [2025-01-10 02:32:40,798 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-10 02:32:40,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2025-01-10 02:32:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36981513] [2025-01-10 02:32:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36981513] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662835381] [2025-01-10 02:32:41,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:32:41,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:41,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:41,259 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) [2025-01-10 02:32:41,260 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 [2025-01-10 02:32:41,287 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 143 statements into 12 equivalence classes. [2025-01-10 02:32:41,313 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 143 statements. [2025-01-10 02:32:41,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-10 02:32:41,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:41,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-10 02:32:41,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2025-01-10 02:32:41,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2025-01-10 02:32:42,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662835381] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:42,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:42,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2025-01-10 02:32:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108488148] [2025-01-10 02:32:42,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:42,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-10 02:32:42,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:42,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-10 02:32:42,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2025-01-10 02:32:42,390 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-01-10 02:32:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:42,443 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2025-01-10 02:32:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 02:32:42,444 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 143 [2025-01-10 02:32:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:42,444 INFO L225 Difference]: With dead ends: 84 [2025-01-10 02:32:42,444 INFO L226 Difference]: Without dead ends: 0 [2025-01-10 02:32:42,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 270 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2025-01-10 02:32:42,445 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:42,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 165 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:32:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-10 02:32:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-10 02:32:42,445 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) [2025-01-10 02:32:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-10 02:32:42,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2025-01-10 02:32:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:42,445 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 02:32:42,445 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) [2025-01-10 02:32:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-10 02:32:42,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-10 02:32:42,448 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2025-01-10 02:32:42,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2025-01-10 02:32:42,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2025-01-10 02:32:42,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2025-01-10 02:32:42,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2025-01-10 02:32:42,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2025-01-10 02:32:42,455 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 [2025-01-10 02:32:42,652 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 [2025-01-10 02:32:42,654 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 02:32:42,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-10 02:32:43,004 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 02:32:43,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:32:43 BoogieIcfgContainer [2025-01-10 02:32:43,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 02:32:43,008 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 02:32:43,008 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 02:32:43,008 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 02:32:43,009 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:32:34" (3/4) ... [2025-01-10 02:32:43,011 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-10 02:32:43,016 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2025-01-10 02:32:43,018 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-01-10 02:32:43,019 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-10 02:32:43,019 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-10 02:32:43,020 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-10 02:32:43,068 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-10 02:32:43,069 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-10 02:32:43,069 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 02:32:43,069 INFO L158 Benchmark]: Toolchain (without parser) took 9210.40ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 107.4MB in the beginning and 216.0MB in the end (delta: -108.6MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2025-01-10 02:32:43,069 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 02:32:43,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.19ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 96.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 02:32:43,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.66ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 95.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 02:32:43,070 INFO L158 Benchmark]: Boogie Preprocessor took 29.54ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 02:32:43,070 INFO L158 Benchmark]: RCFGBuilder took 169.87ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 84.2MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 02:32:43,070 INFO L158 Benchmark]: TraceAbstraction took 8789.23ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 83.1MB in the beginning and 220.9MB in the end (delta: -137.8MB). Peak memory consumption was 143.4MB. Max. memory is 16.1GB. [2025-01-10 02:32:43,070 INFO L158 Benchmark]: Witness Printer took 60.52ms. Allocated memory is still 302.0MB. Free memory was 220.9MB in the beginning and 216.0MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 02:32:43,071 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 135.19ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 96.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.66ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 95.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.54ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 169.87ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 84.2MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8789.23ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 83.1MB in the beginning and 220.9MB in the end (delta: -137.8MB). Peak memory consumption was 143.4MB. Max. memory is 16.1GB. * Witness Printer took 60.52ms. Allocated memory is still 302.0MB. Free memory was 220.9MB in the beginning and 216.0MB in the end (delta: 4.8MB). 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: 8.4s, OverallIterations: 12, TraceHistogramMax: 15, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 642 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 621 mSDsluCounter, 1619 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1328 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2167 IncrementalHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 291 mSDtfsCounter, 2167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1111 GetRequests, 880 SyntacticMatches, 41 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=7, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 84 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1076 NumberOfCodeBlocks, 1064 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1516 ConstructedInterpolants, 0 QuantifiedInterpolants, 3435 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1066 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 27 InterpolantComputations, 5 PerfectInterpolantSequences, 2960/3950 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! [2025-01-10 02:32:43,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE