./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 13:59:12,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 13:59:12,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 13:59:12,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 13:59:12,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 13:59:12,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 13:59:12,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 13:59:12,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 13:59:12,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 13:59:12,864 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 13:59:12,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 13:59:12,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 13:59:12,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 13:59:12,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 13:59:12,866 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 13:59:12,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 13:59:12,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 13:59:12,866 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 13:59:12,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 13:59:12,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 13:59:12,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 13:59:12,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 13:59:12,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 13:59:12,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 13:59:12,872 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 13:59:12,872 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 13:59:12,872 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 13:59:12,872 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 13:59:12,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 13:59:12,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 13:59:12,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 13:59:12,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 13:59:12,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 13:59:12,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 13:59:12,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 13:59:12,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 13:59:12,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 13:59:12,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 13:59:12,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 13:59:12,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 13:59:12,874 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 13:59:12,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 13:59:12,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 13:59:12,875 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 13:59:12,876 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2024-10-13 13:59:13,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 13:59:13,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 13:59:13,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 13:59:13,103 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 13:59:13,103 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 13:59:13,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-10-13 13:59:14,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 13:59:14,565 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 13:59:14,565 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-10-13 13:59:14,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51b4079db/e9383174b43f40bf8b203c318b7ea3eb/FLAGbce595b30 [2024-10-13 13:59:14,589 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51b4079db/e9383174b43f40bf8b203c318b7ea3eb [2024-10-13 13:59:14,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 13:59:14,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 13:59:14,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 13:59:14,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 13:59:14,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 13:59:14,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:14,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180eebc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14, skipping insertion in model container [2024-10-13 13:59:14,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:14,652 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 13:59:14,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 13:59:14,913 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 13:59:14,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 13:59:14,966 INFO L204 MainTranslator]: Completed translation [2024-10-13 13:59:14,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14 WrapperNode [2024-10-13 13:59:14,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 13:59:14,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 13:59:14,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 13:59:14,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 13:59:14,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:14,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,010 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-10-13 13:59:15,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 13:59:15,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 13:59:15,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 13:59:15,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 13:59:15,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,057 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]. [2024-10-13 13:59:15,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 13:59:15,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 13:59:15,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 13:59:15,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 13:59:15,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (1/1) ... [2024-10-13 13:59:15,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 13:59:15,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:15,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 13:59:15,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 13:59:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 13:59:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 13:59:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-10-13 13:59:15,142 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-10-13 13:59:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-10-13 13:59:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-10-13 13:59:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 13:59:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 13:59:15,214 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 13:59:15,216 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 13:59:15,354 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-10-13 13:59:15,357 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 13:59:15,374 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 13:59:15,374 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 13:59:15,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:59:15 BoogieIcfgContainer [2024-10-13 13:59:15,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 13:59:15,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 13:59:15,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 13:59:15,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 13:59:15,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:59:14" (1/3) ... [2024-10-13 13:59:15,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce4513f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:59:15, skipping insertion in model container [2024-10-13 13:59:15,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:14" (2/3) ... [2024-10-13 13:59:15,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce4513f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:59:15, skipping insertion in model container [2024-10-13 13:59:15,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:59:15" (3/3) ... [2024-10-13 13:59:15,381 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-10-13 13:59:15,395 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 13:59:15,395 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-13 13:59:15,446 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 13:59:15,451 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;@5ef2d678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 13:59:15,452 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-13 13:59:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 13:59:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-13 13:59:15,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:15,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 13:59:15,462 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:15,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1021543012, now seen corresponding path program 1 times [2024-10-13 13:59:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582457063] [2024-10-13 13:59:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:15,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582457063] [2024-10-13 13:59:15,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582457063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:15,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:15,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 13:59:15,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506369487] [2024-10-13 13:59:15,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:15,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 13:59:15,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 13:59:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 13:59:15,650 INFO L87 Difference]: Start difference. First operand has 48 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-13 13:59:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:15,699 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-10-13 13:59:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 13:59:15,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2024-10-13 13:59:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:15,706 INFO L225 Difference]: With dead ends: 52 [2024-10-13 13:59:15,707 INFO L226 Difference]: Without dead ends: 44 [2024-10-13 13:59:15,709 INFO L431 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 [2024-10-13 13:59:15,711 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:15,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-13 13:59:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-10-13 13:59:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.56) internal successors, (39), 35 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-13 13:59:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-10-13 13:59:15,742 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 6 [2024-10-13 13:59:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:15,742 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-10-13 13:59:15,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-13 13:59:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-10-13 13:59:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-13 13:59:15,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:15,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:15,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 13:59:15,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:15,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1603062213, now seen corresponding path program 1 times [2024-10-13 13:59:15,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:15,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134658527] [2024-10-13 13:59:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:15,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:15,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134658527] [2024-10-13 13:59:15,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134658527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:15,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:15,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 13:59:15,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699307569] [2024-10-13 13:59:15,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:15,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:15,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:15,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:15,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:15,798 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 3 states have (on average 2.0) 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) [2024-10-13 13:59:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:15,876 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2024-10-13 13:59:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) 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 [2024-10-13 13:59:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:15,877 INFO L225 Difference]: With dead ends: 63 [2024-10-13 13:59:15,877 INFO L226 Difference]: Without dead ends: 57 [2024-10-13 13:59:15,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 13:59:15,879 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 26 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:15,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 157 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-13 13:59:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-10-13 13:59:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 45 states have internal predecessors, (51), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-13 13:59:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-10-13 13:59:15,891 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2024-10-13 13:59:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:15,893 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-10-13 13:59:15,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) 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) [2024-10-13 13:59:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-10-13 13:59:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 13:59:15,893 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:15,894 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:15,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 13:59:15,894 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:15,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1070030294, now seen corresponding path program 1 times [2024-10-13 13:59:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:15,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272725786] [2024-10-13 13:59:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:15,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:15,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272725786] [2024-10-13 13:59:15,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272725786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:15,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:15,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 13:59:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200097340] [2024-10-13 13:59:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:15,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 13:59:15,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 13:59:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 13:59:15,942 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 13:59:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:15,966 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-10-13 13:59:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 13:59:15,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-13 13:59:15,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:15,976 INFO L225 Difference]: With dead ends: 57 [2024-10-13 13:59:15,976 INFO L226 Difference]: Without dead ends: 55 [2024-10-13 13:59:15,976 INFO L431 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 [2024-10-13 13:59:15,977 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:15,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-13 13:59:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-10-13 13:59:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 43 states have internal predecessors, (49), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-13 13:59:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-10-13 13:59:15,995 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2024-10-13 13:59:15,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:15,996 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-10-13 13:59:15,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 13:59:15,996 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-10-13 13:59:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-13 13:59:15,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:15,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:15,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 13:59:15,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:15,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1188799193, now seen corresponding path program 1 times [2024-10-13 13:59:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:15,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876346477] [2024-10-13 13:59:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:16,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:16,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876346477] [2024-10-13 13:59:16,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876346477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:16,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:16,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 13:59:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270144420] [2024-10-13 13:59:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:16,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 13:59:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 13:59:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 13:59:16,087 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 13:59:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:16,189 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2024-10-13 13:59:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 13:59:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-13 13:59:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:16,191 INFO L225 Difference]: With dead ends: 57 [2024-10-13 13:59:16,191 INFO L226 Difference]: Without dead ends: 53 [2024-10-13 13:59:16,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 13:59:16,192 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:16,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 91 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-13 13:59:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-10-13 13:59:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-13 13:59:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2024-10-13 13:59:16,210 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 13 [2024-10-13 13:59:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:16,211 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2024-10-13 13:59:16,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 13:59:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2024-10-13 13:59:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 13:59:16,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:16,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:16,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 13:59:16,214 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:16,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1317113808, now seen corresponding path program 1 times [2024-10-13 13:59:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093466755] [2024-10-13 13:59:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:59:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-13 13:59:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 13:59:16,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:16,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093466755] [2024-10-13 13:59:16,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093466755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:16,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:16,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:59:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855687904] [2024-10-13 13:59:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:16,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:16,416 INFO L87 Difference]: Start difference. First operand 49 states and 58 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) [2024-10-13 13:59:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:16,456 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-10-13 13:59:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:16,457 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 22 [2024-10-13 13:59:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:16,458 INFO L225 Difference]: With dead ends: 73 [2024-10-13 13:59:16,458 INFO L226 Difference]: Without dead ends: 68 [2024-10-13 13:59:16,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:16,460 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:16,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-13 13:59:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2024-10-13 13:59:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2024-10-13 13:59:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-10-13 13:59:16,468 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 22 [2024-10-13 13:59:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:16,468 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-10-13 13:59:16,469 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) [2024-10-13 13:59:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-10-13 13:59:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-13 13:59:16,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:16,470 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:16,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 13:59:16,470 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:16,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:16,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2108197165, now seen corresponding path program 1 times [2024-10-13 13:59:16,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:16,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985188941] [2024-10-13 13:59:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:16,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:59:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-13 13:59:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 13:59:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985188941] [2024-10-13 13:59:16,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985188941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425029458] [2024-10-13 13:59:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:16,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:16,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:16,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:16,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 13:59:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:16,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 13:59:16,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:16,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 13:59:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425029458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:16,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 13:59:16,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-10-13 13:59:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429000758] [2024-10-13 13:59:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:16,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 13:59:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 13:59:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-13 13:59:16,694 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:16,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:16,786 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2024-10-13 13:59:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 13:59:16,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-10-13 13:59:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:16,788 INFO L225 Difference]: With dead ends: 112 [2024-10-13 13:59:16,788 INFO L226 Difference]: Without dead ends: 62 [2024-10-13 13:59:16,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-13 13:59:16,789 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:16,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 142 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-13 13:59:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2024-10-13 13:59:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 46 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-13 13:59:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-10-13 13:59:16,796 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 23 [2024-10-13 13:59:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:16,797 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-10-13 13:59:16,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-10-13 13:59:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-13 13:59:16,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:16,797 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:16,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 13:59:16,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 13:59:16,999 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:16,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1308693282, now seen corresponding path program 1 times [2024-10-13 13:59:16,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:16,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215652981] [2024-10-13 13:59:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:59:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-13 13:59:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 13:59:17,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:17,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215652981] [2024-10-13 13:59:17,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215652981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:17,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:17,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:59:17,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632701346] [2024-10-13 13:59:17,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:17,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:17,089 INFO L87 Difference]: Start difference. First operand 58 states and 70 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) [2024-10-13 13:59:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:17,117 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2024-10-13 13:59:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:17,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-10-13 13:59:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:17,119 INFO L225 Difference]: With dead ends: 82 [2024-10-13 13:59:17,119 INFO L226 Difference]: Without dead ends: 77 [2024-10-13 13:59:17,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:17,120 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:17,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-13 13:59:17,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2024-10-13 13:59:17,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.18) internal successors, (59), 54 states have internal predecessors, (59), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-10-13 13:59:17,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2024-10-13 13:59:17,127 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 24 [2024-10-13 13:59:17,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:17,128 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2024-10-13 13:59:17,128 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) [2024-10-13 13:59:17,128 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2024-10-13 13:59:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-13 13:59:17,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:17,129 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:17,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 13:59:17,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:17,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1559204346, now seen corresponding path program 1 times [2024-10-13 13:59:17,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:17,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801359482] [2024-10-13 13:59:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-13 13:59:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-13 13:59:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801359482] [2024-10-13 13:59:17,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801359482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:17,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:17,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:59:17,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483036794] [2024-10-13 13:59:17,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:17,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:17,189 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:17,217 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2024-10-13 13:59:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-10-13 13:59:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:17,218 INFO L225 Difference]: With dead ends: 82 [2024-10-13 13:59:17,218 INFO L226 Difference]: Without dead ends: 80 [2024-10-13 13:59:17,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:17,219 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:17,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 109 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-13 13:59:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2024-10-13 13:59:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 61 states have internal predecessors, (66), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2024-10-13 13:59:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2024-10-13 13:59:17,242 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 28 [2024-10-13 13:59:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:17,243 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2024-10-13 13:59:17,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2024-10-13 13:59:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-13 13:59:17,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:17,244 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:17,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 13:59:17,244 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:17,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1102557063, now seen corresponding path program 1 times [2024-10-13 13:59:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:17,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588894977] [2024-10-13 13:59:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:17,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-13 13:59:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-13 13:59:17,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:17,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588894977] [2024-10-13 13:59:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588894977] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097548545] [2024-10-13 13:59:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:17,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:17,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:17,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:17,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 13:59:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:17,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 13:59:17,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:17,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 13:59:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097548545] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:17,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:17,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-10-13 13:59:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590778952] [2024-10-13 13:59:17,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:17,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 13:59:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:17,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 13:59:17,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-10-13 13:59:17,524 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 13:59:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:17,823 INFO L93 Difference]: Finished difference Result 203 states and 274 transitions. [2024-10-13 13:59:17,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 13:59:17,824 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-10-13 13:59:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:17,825 INFO L225 Difference]: With dead ends: 203 [2024-10-13 13:59:17,825 INFO L226 Difference]: Without dead ends: 134 [2024-10-13 13:59:17,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-10-13 13:59:17,826 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 135 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:17,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 504 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 13:59:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-13 13:59:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2024-10-13 13:59:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.164835164835165) internal successors, (106), 96 states have internal predecessors, (106), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2024-10-13 13:59:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 156 transitions. [2024-10-13 13:59:17,841 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 156 transitions. Word has length 29 [2024-10-13 13:59:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:17,842 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 156 transitions. [2024-10-13 13:59:17,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 13:59:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 156 transitions. [2024-10-13 13:59:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-13 13:59:17,843 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:17,843 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:17,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 13:59:18,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-13 13:59:18,048 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:18,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:18,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1810923195, now seen corresponding path program 2 times [2024-10-13 13:59:18,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:18,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310699637] [2024-10-13 13:59:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:18,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:18,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 13:59:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:18,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 13:59:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-13 13:59:18,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310699637] [2024-10-13 13:59:18,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310699637] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:18,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964893787] [2024-10-13 13:59:18,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 13:59:18,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:18,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:18,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:18,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 13:59:18,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 13:59:18,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 13:59:18,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 13:59:18,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-13 13:59:18,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 13:59:18,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964893787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:18,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 13:59:18,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 13:59:18,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179706495] [2024-10-13 13:59:18,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:18,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 13:59:18,217 INFO L87 Difference]: Start difference. First operand 120 states and 156 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:18,245 INFO L93 Difference]: Finished difference Result 129 states and 168 transitions. [2024-10-13 13:59:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:18,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-10-13 13:59:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:18,246 INFO L225 Difference]: With dead ends: 129 [2024-10-13 13:59:18,247 INFO L226 Difference]: Without dead ends: 128 [2024-10-13 13:59:18,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 13:59:18,247 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:18,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-13 13:59:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2024-10-13 13:59:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 98 states have internal predecessors, (110), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2024-10-13 13:59:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 160 transitions. [2024-10-13 13:59:18,262 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 160 transitions. Word has length 41 [2024-10-13 13:59:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:18,262 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 160 transitions. [2024-10-13 13:59:18,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2024-10-13 13:59:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-13 13:59:18,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:18,264 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:18,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 13:59:18,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:18,468 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:18,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 304044270, now seen corresponding path program 1 times [2024-10-13 13:59:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036960115] [2024-10-13 13:59:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:18,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 13:59:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:18,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 13:59:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-13 13:59:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036960115] [2024-10-13 13:59:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036960115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998641210] [2024-10-13 13:59:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:18,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:18,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:18,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:18,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 13:59:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:18,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 13:59:18,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:18,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 13:59:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998641210] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:18,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:18,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2024-10-13 13:59:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079219710] [2024-10-13 13:59:18,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:18,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 13:59:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 13:59:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-10-13 13:59:18,897 INFO L87 Difference]: Start difference. First operand 124 states and 160 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 13:59:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:19,274 INFO L93 Difference]: Finished difference Result 298 states and 387 transitions. [2024-10-13 13:59:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 13:59:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 42 [2024-10-13 13:59:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:19,276 INFO L225 Difference]: With dead ends: 298 [2024-10-13 13:59:19,276 INFO L226 Difference]: Without dead ends: 188 [2024-10-13 13:59:19,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-10-13 13:59:19,277 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 113 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:19,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 667 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 13:59:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-10-13 13:59:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2024-10-13 13:59:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 130 states have (on average 1.146153846153846) internal successors, (149), 131 states have internal predecessors, (149), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 27 states have call predecessors, (48), 21 states have call successors, (48) [2024-10-13 13:59:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2024-10-13 13:59:19,302 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 42 [2024-10-13 13:59:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:19,302 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2024-10-13 13:59:19,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 13:59:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2024-10-13 13:59:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-13 13:59:19,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:19,304 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:19,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 13:59:19,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:19,508 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:19,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash -145283649, now seen corresponding path program 1 times [2024-10-13 13:59:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967123997] [2024-10-13 13:59:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:19,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 13:59:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:19,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-13 13:59:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 13:59:19,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967123997] [2024-10-13 13:59:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967123997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713875456] [2024-10-13 13:59:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:19,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:19,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:19,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:19,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 13:59:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:19,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 13:59:19,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:59:19,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 13:59:19,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713875456] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:19,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:19,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2024-10-13 13:59:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815149922] [2024-10-13 13:59:19,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:19,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 13:59:19,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 13:59:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-10-13 13:59:19,950 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 13:59:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:20,319 INFO L93 Difference]: Finished difference Result 355 states and 467 transitions. [2024-10-13 13:59:20,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 13:59:20,319 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 47 [2024-10-13 13:59:20,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:20,321 INFO L225 Difference]: With dead ends: 355 [2024-10-13 13:59:20,321 INFO L226 Difference]: Without dead ends: 208 [2024-10-13 13:59:20,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-10-13 13:59:20,322 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 155 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:20,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 654 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 13:59:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-10-13 13:59:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 189. [2024-10-13 13:59:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.1418918918918919) internal successors, (169), 148 states have internal predecessors, (169), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 31 states have call predecessors, (55), 24 states have call successors, (55) [2024-10-13 13:59:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2024-10-13 13:59:20,334 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 47 [2024-10-13 13:59:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:20,334 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2024-10-13 13:59:20,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 13:59:20,335 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2024-10-13 13:59:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-13 13:59:20,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:20,339 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:20,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 13:59:20,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 13:59:20,540 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:20,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash -350528371, now seen corresponding path program 2 times [2024-10-13 13:59:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:20,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740937213] [2024-10-13 13:59:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:20,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 13:59:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:20,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-13 13:59:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 13:59:20,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:20,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740937213] [2024-10-13 13:59:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740937213] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359019060] [2024-10-13 13:59:20,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 13:59:20,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:20,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:20,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:20,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 13:59:20,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 13:59:20,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 13:59:20,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 13:59:20,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 13:59:20,664 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 13:59:20,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359019060] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:20,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 13:59:20,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 13:59:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336847619] [2024-10-13 13:59:20,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:20,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:20,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:20,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 13:59:20,665 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:20,688 INFO L93 Difference]: Finished difference Result 202 states and 269 transitions. [2024-10-13 13:59:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:20,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-10-13 13:59:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:20,690 INFO L225 Difference]: With dead ends: 202 [2024-10-13 13:59:20,690 INFO L226 Difference]: Without dead ends: 201 [2024-10-13 13:59:20,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 13:59:20,691 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:20,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 101 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-13 13:59:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2024-10-13 13:59:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 156 states have (on average 1.1346153846153846) internal successors, (177), 152 states have internal predecessors, (177), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 35 states have call predecessors, (55), 24 states have call successors, (55) [2024-10-13 13:59:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 257 transitions. [2024-10-13 13:59:20,702 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 257 transitions. Word has length 47 [2024-10-13 13:59:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:20,702 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 257 transitions. [2024-10-13 13:59:20,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 257 transitions. [2024-10-13 13:59:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-13 13:59:20,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:20,703 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:20,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 13:59:20,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:20,905 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:20,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2018522486, now seen corresponding path program 1 times [2024-10-13 13:59:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:20,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992293979] [2024-10-13 13:59:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:20,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 13:59:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:20,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-13 13:59:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 13:59:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992293979] [2024-10-13 13:59:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992293979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:20,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56748292] [2024-10-13 13:59:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:20,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:20,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:20,972 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:20,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 13:59:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 13:59:21,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 13:59:21,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 13:59:21,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56748292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:21,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 13:59:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-10-13 13:59:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867126678] [2024-10-13 13:59:21,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:21,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 13:59:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 13:59:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 13:59:21,041 INFO L87 Difference]: Start difference. First operand 197 states and 257 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:21,068 INFO L93 Difference]: Finished difference Result 213 states and 278 transitions. [2024-10-13 13:59:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 13:59:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-10-13 13:59:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:21,069 INFO L225 Difference]: With dead ends: 213 [2024-10-13 13:59:21,070 INFO L226 Difference]: Without dead ends: 212 [2024-10-13 13:59:21,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 13:59:21,070 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:21,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 143 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-13 13:59:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2024-10-13 13:59:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 149 states have internal predecessors, (174), 24 states have call successors, (24), 9 states have call predecessors, (24), 12 states have return successors, (52), 34 states have call predecessors, (52), 23 states have call successors, (52) [2024-10-13 13:59:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 250 transitions. [2024-10-13 13:59:21,080 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 250 transitions. Word has length 48 [2024-10-13 13:59:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:21,080 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 250 transitions. [2024-10-13 13:59:21,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 250 transitions. [2024-10-13 13:59:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-13 13:59:21,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:21,081 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:21,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 13:59:21,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:21,283 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:21,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1384488167, now seen corresponding path program 1 times [2024-10-13 13:59:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303253718] [2024-10-13 13:59:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:21,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-13 13:59:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 13:59:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-13 13:59:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:21,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303253718] [2024-10-13 13:59:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303253718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:21,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:21,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:59:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055576977] [2024-10-13 13:59:21,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:21,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:21,337 INFO L87 Difference]: Start difference. First operand 193 states and 250 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:21,367 INFO L93 Difference]: Finished difference Result 209 states and 271 transitions. [2024-10-13 13:59:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:21,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-10-13 13:59:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:21,369 INFO L225 Difference]: With dead ends: 209 [2024-10-13 13:59:21,369 INFO L226 Difference]: Without dead ends: 208 [2024-10-13 13:59:21,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:21,369 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 2 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:21,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 161 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-10-13 13:59:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 189. [2024-10-13 13:59:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 150 states have (on average 1.14) internal successors, (171), 146 states have internal predecessors, (171), 23 states have call successors, (23), 9 states have call predecessors, (23), 12 states have return successors, (49), 33 states have call predecessors, (49), 22 states have call successors, (49) [2024-10-13 13:59:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 243 transitions. [2024-10-13 13:59:21,378 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 243 transitions. Word has length 55 [2024-10-13 13:59:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:21,378 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 243 transitions. [2024-10-13 13:59:21,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:59:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 243 transitions. [2024-10-13 13:59:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-13 13:59:21,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:21,379 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:21,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 13:59:21,379 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:21,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash 525191420, now seen corresponding path program 1 times [2024-10-13 13:59:21,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:21,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034144283] [2024-10-13 13:59:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:21,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 13:59:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-13 13:59:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-13 13:59:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034144283] [2024-10-13 13:59:21,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034144283] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:21,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43829301] [2024-10-13 13:59:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:21,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:21,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 13:59:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:21,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 13:59:21,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 13:59:21,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 13:59:21,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43829301] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:21,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:21,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 19 [2024-10-13 13:59:21,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055197463] [2024-10-13 13:59:21,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:21,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 13:59:21,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:21,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 13:59:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-10-13 13:59:21,797 INFO L87 Difference]: Start difference. First operand 189 states and 243 transitions. Second operand has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-13 13:59:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:22,177 INFO L93 Difference]: Finished difference Result 450 states and 614 transitions. [2024-10-13 13:59:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 13:59:22,178 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2024-10-13 13:59:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:22,179 INFO L225 Difference]: With dead ends: 450 [2024-10-13 13:59:22,180 INFO L226 Difference]: Without dead ends: 281 [2024-10-13 13:59:22,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 120 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2024-10-13 13:59:22,182 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 171 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:22,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 282 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 13:59:22,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-10-13 13:59:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 256. [2024-10-13 13:59:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 204 states have (on average 1.1323529411764706) internal successors, (231), 198 states have internal predecessors, (231), 32 states have call successors, (32), 12 states have call predecessors, (32), 16 states have return successors, (64), 45 states have call predecessors, (64), 31 states have call successors, (64) [2024-10-13 13:59:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 327 transitions. [2024-10-13 13:59:22,194 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 327 transitions. Word has length 67 [2024-10-13 13:59:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:22,194 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 327 transitions. [2024-10-13 13:59:22,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-13 13:59:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 327 transitions. [2024-10-13 13:59:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-13 13:59:22,195 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:22,195 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:22,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 13:59:22,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 13:59:22,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:22,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash -93027204, now seen corresponding path program 1 times [2024-10-13 13:59:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:22,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682237120] [2024-10-13 13:59:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:22,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 13:59:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-13 13:59:22,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:22,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682237120] [2024-10-13 13:59:22,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682237120] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:22,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:22,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:59:22,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684287919] [2024-10-13 13:59:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:22,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:22,445 INFO L87 Difference]: Start difference. First operand 256 states and 327 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 13:59:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:22,471 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2024-10-13 13:59:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:22,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2024-10-13 13:59:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:22,472 INFO L225 Difference]: With dead ends: 278 [2024-10-13 13:59:22,472 INFO L226 Difference]: Without dead ends: 277 [2024-10-13 13:59:22,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:22,473 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:22,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-10-13 13:59:22,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 264. [2024-10-13 13:59:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 211 states have (on average 1.127962085308057) internal successors, (238), 204 states have internal predecessors, (238), 32 states have call successors, (32), 12 states have call predecessors, (32), 17 states have return successors, (65), 47 states have call predecessors, (65), 31 states have call successors, (65) [2024-10-13 13:59:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 335 transitions. [2024-10-13 13:59:22,484 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 335 transitions. Word has length 61 [2024-10-13 13:59:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:22,484 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 335 transitions. [2024-10-13 13:59:22,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 13:59:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 335 transitions. [2024-10-13 13:59:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-13 13:59:22,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:22,485 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:22,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 13:59:22,485 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:22,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1778862165, now seen corresponding path program 1 times [2024-10-13 13:59:22,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:22,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489300632] [2024-10-13 13:59:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:22,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 13:59:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-13 13:59:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489300632] [2024-10-13 13:59:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489300632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 13:59:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889313208] [2024-10-13 13:59:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:22,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 13:59:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 13:59:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-13 13:59:22,592 INFO L87 Difference]: Start difference. First operand 264 states and 335 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 13:59:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:22,661 INFO L93 Difference]: Finished difference Result 345 states and 452 transitions. [2024-10-13 13:59:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 13:59:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2024-10-13 13:59:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:22,663 INFO L225 Difference]: With dead ends: 345 [2024-10-13 13:59:22,663 INFO L226 Difference]: Without dead ends: 344 [2024-10-13 13:59:22,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 13:59:22,664 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:22,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 212 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-13 13:59:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 281. [2024-10-13 13:59:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 218 states have internal predecessors, (250), 34 states have call successors, (34), 12 states have call predecessors, (34), 20 states have return successors, (81), 50 states have call predecessors, (81), 33 states have call successors, (81) [2024-10-13 13:59:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 365 transitions. [2024-10-13 13:59:22,685 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 365 transitions. Word has length 62 [2024-10-13 13:59:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:22,685 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 365 transitions. [2024-10-13 13:59:22,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 13:59:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 365 transitions. [2024-10-13 13:59:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-13 13:59:22,686 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:22,686 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:22,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 13:59:22,686 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:22,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1017747310, now seen corresponding path program 1 times [2024-10-13 13:59:22,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:22,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009220437] [2024-10-13 13:59:22,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:22,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 13:59:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 13:59:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-13 13:59:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-13 13:59:22,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:22,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009220437] [2024-10-13 13:59:22,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009220437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:22,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607258719] [2024-10-13 13:59:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:22,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:22,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:22,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:22,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 13:59:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:22,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 13:59:22,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 87 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-13 13:59:22,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 39 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 13:59:23,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607258719] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:23,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 18 [2024-10-13 13:59:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28099276] [2024-10-13 13:59:23,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:23,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 13:59:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 13:59:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-13 13:59:23,050 INFO L87 Difference]: Start difference. First operand 281 states and 365 transitions. Second operand has 18 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 12 states have internal predecessors, (84), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-13 13:59:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:23,397 INFO L93 Difference]: Finished difference Result 360 states and 459 transitions. [2024-10-13 13:59:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 13:59:23,398 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 12 states have internal predecessors, (84), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 80 [2024-10-13 13:59:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:23,399 INFO L225 Difference]: With dead ends: 360 [2024-10-13 13:59:23,399 INFO L226 Difference]: Without dead ends: 301 [2024-10-13 13:59:23,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 148 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2024-10-13 13:59:23,400 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 152 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:23,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 315 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 13:59:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-13 13:59:23,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 289. [2024-10-13 13:59:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 229 states have (on average 1.1179039301310043) internal successors, (256), 224 states have internal predecessors, (256), 35 states have call successors, (35), 13 states have call predecessors, (35), 21 states have return successors, (85), 51 states have call predecessors, (85), 34 states have call successors, (85) [2024-10-13 13:59:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 376 transitions. [2024-10-13 13:59:23,412 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 376 transitions. Word has length 80 [2024-10-13 13:59:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:23,412 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 376 transitions. [2024-10-13 13:59:23,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 12 states have internal predecessors, (84), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-13 13:59:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 376 transitions. [2024-10-13 13:59:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-13 13:59:23,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:23,413 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:23,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 13:59:23,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:23,614 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:23,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash -293281765, now seen corresponding path program 1 times [2024-10-13 13:59:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806255951] [2024-10-13 13:59:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:23,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:23,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-13 13:59:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:23,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-13 13:59:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:23,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:23,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-13 13:59:23,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:23,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806255951] [2024-10-13 13:59:23,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806255951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:23,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883988521] [2024-10-13 13:59:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:23,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:23,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:23,679 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:23,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 13:59:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:23,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 13:59:23,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 13:59:23,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 13:59:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883988521] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:24,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:24,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 34 [2024-10-13 13:59:24,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066403093] [2024-10-13 13:59:24,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:24,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-13 13:59:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-13 13:59:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 13:59:24,231 INFO L87 Difference]: Start difference. First operand 289 states and 376 transitions. Second operand has 34 states, 32 states have (on average 3.5625) internal successors, (114), 22 states have internal predecessors, (114), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-13 13:59:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:24,881 INFO L93 Difference]: Finished difference Result 555 states and 743 transitions. [2024-10-13 13:59:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-13 13:59:24,881 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 22 states have internal predecessors, (114), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 72 [2024-10-13 13:59:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:24,883 INFO L225 Difference]: With dead ends: 555 [2024-10-13 13:59:24,883 INFO L226 Difference]: Without dead ends: 309 [2024-10-13 13:59:24,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=2340, Unknown=0, NotChecked=0, Total=2756 [2024-10-13 13:59:24,886 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 351 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:24,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 455 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 13:59:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-10-13 13:59:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 282. [2024-10-13 13:59:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 222 states have (on average 1.1081081081081081) internal successors, (246), 221 states have internal predecessors, (246), 34 states have call successors, (34), 14 states have call predecessors, (34), 22 states have return successors, (65), 46 states have call predecessors, (65), 33 states have call successors, (65) [2024-10-13 13:59:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 345 transitions. [2024-10-13 13:59:24,900 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 345 transitions. Word has length 72 [2024-10-13 13:59:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:24,902 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 345 transitions. [2024-10-13 13:59:24,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 22 states have internal predecessors, (114), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-13 13:59:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 345 transitions. [2024-10-13 13:59:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-13 13:59:24,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:24,904 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:24,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 13:59:25,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:25,109 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:25,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2066237387, now seen corresponding path program 1 times [2024-10-13 13:59:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:25,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694859740] [2024-10-13 13:59:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:25,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 13:59:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-13 13:59:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-13 13:59:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694859740] [2024-10-13 13:59:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694859740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:59:25,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:59:25,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:59:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324935712] [2024-10-13 13:59:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:59:25,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:59:25,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:25,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:59:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:25,161 INFO L87 Difference]: Start difference. First operand 282 states and 345 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 13:59:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:25,197 INFO L93 Difference]: Finished difference Result 296 states and 361 transitions. [2024-10-13 13:59:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:59:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-10-13 13:59:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:25,200 INFO L225 Difference]: With dead ends: 296 [2024-10-13 13:59:25,200 INFO L226 Difference]: Without dead ends: 295 [2024-10-13 13:59:25,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:59:25,201 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:25,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:59:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-10-13 13:59:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2024-10-13 13:59:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 219 states have (on average 1.1004566210045663) internal successors, (241), 218 states have internal predecessors, (241), 33 states have call successors, (33), 14 states have call predecessors, (33), 22 states have return successors, (64), 45 states have call predecessors, (64), 32 states have call successors, (64) [2024-10-13 13:59:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 338 transitions. [2024-10-13 13:59:25,213 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 338 transitions. Word has length 66 [2024-10-13 13:59:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:25,213 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 338 transitions. [2024-10-13 13:59:25,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 13:59:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 338 transitions. [2024-10-13 13:59:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-13 13:59:25,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:25,214 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:25,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 13:59:25,214 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:25,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1593347563, now seen corresponding path program 1 times [2024-10-13 13:59:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530825504] [2024-10-13 13:59:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 13:59:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-13 13:59:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-13 13:59:25,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:25,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530825504] [2024-10-13 13:59:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530825504] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940071325] [2024-10-13 13:59:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:25,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:25,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:25,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:25,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 13:59:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:25,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 13:59:25,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 13:59:25,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 13:59:25,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940071325] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:25,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2024-10-13 13:59:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075366742] [2024-10-13 13:59:25,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:25,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 13:59:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 13:59:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-13 13:59:25,767 INFO L87 Difference]: Start difference. First operand 278 states and 338 transitions. Second operand has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 16 states have internal predecessors, (92), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2024-10-13 13:59:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:26,031 INFO L93 Difference]: Finished difference Result 500 states and 606 transitions. [2024-10-13 13:59:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 13:59:26,032 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 16 states have internal predecessors, (92), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 98 [2024-10-13 13:59:26,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:26,033 INFO L225 Difference]: With dead ends: 500 [2024-10-13 13:59:26,033 INFO L226 Difference]: Without dead ends: 285 [2024-10-13 13:59:26,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 198 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2024-10-13 13:59:26,051 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 176 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:26,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 204 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-10-13 13:59:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 280. [2024-10-13 13:59:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 220 states have (on average 1.1) internal successors, (242), 220 states have internal predecessors, (242), 33 states have call successors, (33), 15 states have call predecessors, (33), 23 states have return successors, (62), 44 states have call predecessors, (62), 32 states have call successors, (62) [2024-10-13 13:59:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 337 transitions. [2024-10-13 13:59:26,063 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 337 transitions. Word has length 98 [2024-10-13 13:59:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:26,063 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 337 transitions. [2024-10-13 13:59:26,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 16 states have internal predecessors, (92), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2024-10-13 13:59:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 337 transitions. [2024-10-13 13:59:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-13 13:59:26,064 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:26,064 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:26,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 13:59:26,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 13:59:26,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:26,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash -446635783, now seen corresponding path program 1 times [2024-10-13 13:59:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801096479] [2024-10-13 13:59:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 13:59:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 13:59:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-13 13:59:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801096479] [2024-10-13 13:59:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801096479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076226126] [2024-10-13 13:59:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:26,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:26,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:26,433 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:26,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 13:59:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:26,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 13:59:26,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-13 13:59:26,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 13:59:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076226126] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:26,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2024-10-13 13:59:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342751755] [2024-10-13 13:59:26,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:26,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 13:59:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 13:59:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-10-13 13:59:26,717 INFO L87 Difference]: Start difference. First operand 280 states and 337 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-10-13 13:59:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:26,957 INFO L93 Difference]: Finished difference Result 517 states and 625 transitions. [2024-10-13 13:59:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 13:59:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 75 [2024-10-13 13:59:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:26,959 INFO L225 Difference]: With dead ends: 517 [2024-10-13 13:59:26,959 INFO L226 Difference]: Without dead ends: 276 [2024-10-13 13:59:26,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 152 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2024-10-13 13:59:26,960 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 128 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:26,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 430 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 13:59:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-10-13 13:59:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 266. [2024-10-13 13:59:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 210 states have (on average 1.0952380952380953) internal successors, (230), 208 states have internal predecessors, (230), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (52), 42 states have call predecessors, (52), 30 states have call successors, (52) [2024-10-13 13:59:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 313 transitions. [2024-10-13 13:59:26,972 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 313 transitions. Word has length 75 [2024-10-13 13:59:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:26,972 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 313 transitions. [2024-10-13 13:59:26,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-10-13 13:59:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 313 transitions. [2024-10-13 13:59:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-13 13:59:26,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:26,973 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:26,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 13:59:27,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 13:59:27,174 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:27,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash -94407406, now seen corresponding path program 1 times [2024-10-13 13:59:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:27,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116961551] [2024-10-13 13:59:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 13:59:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-13 13:59:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-13 13:59:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:27,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116961551] [2024-10-13 13:59:27,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116961551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:27,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180132156] [2024-10-13 13:59:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:27,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:27,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:27,301 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:27,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 13:59:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 13:59:27,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-13 13:59:27,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-13 13:59:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180132156] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:27,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:27,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-10-13 13:59:27,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783193758] [2024-10-13 13:59:27,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:27,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 13:59:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 13:59:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-13 13:59:27,503 INFO L87 Difference]: Start difference. First operand 266 states and 313 transitions. Second operand has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-13 13:59:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:27,628 INFO L93 Difference]: Finished difference Result 460 states and 539 transitions. [2024-10-13 13:59:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 13:59:27,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-10-13 13:59:27,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:27,630 INFO L225 Difference]: With dead ends: 460 [2024-10-13 13:59:27,630 INFO L226 Difference]: Without dead ends: 270 [2024-10-13 13:59:27,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-13 13:59:27,631 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 112 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:27,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 254 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-13 13:59:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 264. [2024-10-13 13:59:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 208 states have (on average 1.0961538461538463) internal successors, (228), 207 states have internal predecessors, (228), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (51), 41 states have call predecessors, (51), 30 states have call successors, (51) [2024-10-13 13:59:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 310 transitions. [2024-10-13 13:59:27,642 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 310 transitions. Word has length 76 [2024-10-13 13:59:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:27,642 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 310 transitions. [2024-10-13 13:59:27,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-13 13:59:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 310 transitions. [2024-10-13 13:59:27,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-13 13:59:27,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:27,643 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:27,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 13:59:27,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 13:59:27,848 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:27,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash -701357590, now seen corresponding path program 1 times [2024-10-13 13:59:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570709938] [2024-10-13 13:59:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:27,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 13:59:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-13 13:59:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-13 13:59:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-13 13:59:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570709938] [2024-10-13 13:59:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570709938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662339552] [2024-10-13 13:59:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:27,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:27,977 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:27,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 13:59:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:28,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 13:59:28,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-13 13:59:28,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-13 13:59:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662339552] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:28,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:28,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2024-10-13 13:59:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638526655] [2024-10-13 13:59:28,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:28,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-13 13:59:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-13 13:59:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2024-10-13 13:59:28,456 INFO L87 Difference]: Start difference. First operand 264 states and 310 transitions. Second operand has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-13 13:59:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:29,186 INFO L93 Difference]: Finished difference Result 479 states and 574 transitions. [2024-10-13 13:59:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-13 13:59:29,187 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 80 [2024-10-13 13:59:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:29,188 INFO L225 Difference]: With dead ends: 479 [2024-10-13 13:59:29,188 INFO L226 Difference]: Without dead ends: 260 [2024-10-13 13:59:29,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 164 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=2811, Unknown=0, NotChecked=0, Total=3192 [2024-10-13 13:59:29,190 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 200 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:29,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 325 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 13:59:29,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-10-13 13:59:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 230. [2024-10-13 13:59:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 180 states have (on average 1.0833333333333333) internal successors, (195), 182 states have internal predecessors, (195), 26 states have call successors, (26), 15 states have call predecessors, (26), 20 states have return successors, (37), 32 states have call predecessors, (37), 25 states have call successors, (37) [2024-10-13 13:59:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 258 transitions. [2024-10-13 13:59:29,202 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 258 transitions. Word has length 80 [2024-10-13 13:59:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:29,203 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 258 transitions. [2024-10-13 13:59:29,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-13 13:59:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 258 transitions. [2024-10-13 13:59:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-13 13:59:29,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:29,204 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:29,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 13:59:29,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:29,405 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:29,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:29,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1172080739, now seen corresponding path program 1 times [2024-10-13 13:59:29,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:29,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654891619] [2024-10-13 13:59:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 13:59:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-13 13:59:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-13 13:59:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654891619] [2024-10-13 13:59:29,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654891619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:29,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881782422] [2024-10-13 13:59:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:29,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:29,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:29,629 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:29,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 13:59:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:29,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 13:59:29,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-10-13 13:59:29,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-13 13:59:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881782422] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:30,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:30,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2024-10-13 13:59:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476746005] [2024-10-13 13:59:30,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:30,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-13 13:59:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-13 13:59:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-10-13 13:59:30,142 INFO L87 Difference]: Start difference. First operand 230 states and 258 transitions. Second operand has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-13 13:59:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:30,295 INFO L93 Difference]: Finished difference Result 244 states and 276 transitions. [2024-10-13 13:59:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 13:59:30,296 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 94 [2024-10-13 13:59:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:30,297 INFO L225 Difference]: With dead ends: 244 [2024-10-13 13:59:30,297 INFO L226 Difference]: Without dead ends: 242 [2024-10-13 13:59:30,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 13:59:30,298 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:30,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 467 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-10-13 13:59:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 222. [2024-10-13 13:59:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 175 states have (on average 1.0571428571428572) internal successors, (185), 176 states have internal predecessors, (185), 26 states have call successors, (26), 15 states have call predecessors, (26), 19 states have return successors, (35), 30 states have call predecessors, (35), 25 states have call successors, (35) [2024-10-13 13:59:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 246 transitions. [2024-10-13 13:59:30,307 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 246 transitions. Word has length 94 [2024-10-13 13:59:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:30,307 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 246 transitions. [2024-10-13 13:59:30,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-13 13:59:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 246 transitions. [2024-10-13 13:59:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-13 13:59:30,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:30,308 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:30,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 13:59:30,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 13:59:30,512 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:30,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1974764640, now seen corresponding path program 1 times [2024-10-13 13:59:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:30,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135780130] [2024-10-13 13:59:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:30,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 13:59:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-13 13:59:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-13 13:59:30,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:30,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135780130] [2024-10-13 13:59:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135780130] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:30,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037368571] [2024-10-13 13:59:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:30,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:30,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:30,747 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:30,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 13:59:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:30,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 13:59:30,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-13 13:59:30,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-13 13:59:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037368571] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:31,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2024-10-13 13:59:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983449713] [2024-10-13 13:59:31,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:31,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-13 13:59:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-13 13:59:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-10-13 13:59:31,419 INFO L87 Difference]: Start difference. First operand 222 states and 246 transitions. Second operand has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-13 13:59:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:31,547 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2024-10-13 13:59:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 13:59:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 95 [2024-10-13 13:59:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:31,549 INFO L225 Difference]: With dead ends: 256 [2024-10-13 13:59:31,549 INFO L226 Difference]: Without dead ends: 254 [2024-10-13 13:59:31,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 189 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-10-13 13:59:31,550 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:31,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 417 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-10-13 13:59:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 216. [2024-10-13 13:59:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 170 states have (on average 1.0411764705882354) internal successors, (177), 172 states have internal predecessors, (177), 24 states have call successors, (24), 15 states have call predecessors, (24), 20 states have return successors, (32), 28 states have call predecessors, (32), 23 states have call successors, (32) [2024-10-13 13:59:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 233 transitions. [2024-10-13 13:59:31,559 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 233 transitions. Word has length 95 [2024-10-13 13:59:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:31,560 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 233 transitions. [2024-10-13 13:59:31,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-13 13:59:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 233 transitions. [2024-10-13 13:59:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-13 13:59:31,561 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:31,561 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-10-13 13:59:31,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 13:59:31,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 13:59:31,762 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:31,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash -341892502, now seen corresponding path program 1 times [2024-10-13 13:59:31,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:31,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609476078] [2024-10-13 13:59:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:31,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:31,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-13 13:59:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-13 13:59:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609476078] [2024-10-13 13:59:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609476078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682344111] [2024-10-13 13:59:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:32,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:32,211 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:32,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 13:59:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:32,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-13 13:59:32,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-13 13:59:32,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 13:59:33,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682344111] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:33,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:33,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2024-10-13 13:59:33,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3807235] [2024-10-13 13:59:33,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:33,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-13 13:59:33,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:33,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-13 13:59:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-10-13 13:59:33,382 INFO L87 Difference]: Start difference. First operand 216 states and 233 transitions. Second operand has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2024-10-13 13:59:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:33,504 INFO L93 Difference]: Finished difference Result 228 states and 244 transitions. [2024-10-13 13:59:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 13:59:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 148 [2024-10-13 13:59:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:33,506 INFO L225 Difference]: With dead ends: 228 [2024-10-13 13:59:33,506 INFO L226 Difference]: Without dead ends: 218 [2024-10-13 13:59:33,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 300 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=1282, Unknown=0, NotChecked=0, Total=1482 [2024-10-13 13:59:33,507 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:33,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 386 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-13 13:59:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 204. [2024-10-13 13:59:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 160 states have (on average 1.03125) internal successors, (165), 163 states have internal predecessors, (165), 24 states have call successors, (24), 15 states have call predecessors, (24), 19 states have return successors, (30), 25 states have call predecessors, (30), 23 states have call successors, (30) [2024-10-13 13:59:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 219 transitions. [2024-10-13 13:59:33,515 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 219 transitions. Word has length 148 [2024-10-13 13:59:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:33,516 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 219 transitions. [2024-10-13 13:59:33,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2024-10-13 13:59:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 219 transitions. [2024-10-13 13:59:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-13 13:59:33,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:33,517 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1] [2024-10-13 13:59:33,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 13:59:33,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 13:59:33,721 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:33,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2064765440, now seen corresponding path program 2 times [2024-10-13 13:59:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:33,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126275979] [2024-10-13 13:59:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:59:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-13 13:59:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-13 13:59:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-13 13:59:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 178 proven. 56 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-10-13 13:59:33,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126275979] [2024-10-13 13:59:33,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126275979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404645767] [2024-10-13 13:59:33,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 13:59:33,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:33,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:33,931 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:33,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 13:59:34,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 13:59:34,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 13:59:34,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 13:59:34,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 360 proven. 58 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-10-13 13:59:34,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 109 proven. 121 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2024-10-13 13:59:34,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404645767] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:34,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:34,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 19 [2024-10-13 13:59:34,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121253416] [2024-10-13 13:59:34,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:34,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 13:59:34,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 13:59:34,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-13 13:59:34,407 INFO L87 Difference]: Start difference. First operand 204 states and 219 transitions. Second operand has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2024-10-13 13:59:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:34,600 INFO L93 Difference]: Finished difference Result 331 states and 365 transitions. [2024-10-13 13:59:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 13:59:34,601 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) Word has length 201 [2024-10-13 13:59:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:34,602 INFO L225 Difference]: With dead ends: 331 [2024-10-13 13:59:34,602 INFO L226 Difference]: Without dead ends: 195 [2024-10-13 13:59:34,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 427 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-10-13 13:59:34,603 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 76 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:34,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 176 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 13:59:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-10-13 13:59:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 190. [2024-10-13 13:59:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 151 states have internal predecessors, (154), 23 states have call successors, (23), 16 states have call predecessors, (23), 16 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-10-13 13:59:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 200 transitions. [2024-10-13 13:59:34,612 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 200 transitions. Word has length 201 [2024-10-13 13:59:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:34,612 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 200 transitions. [2024-10-13 13:59:34,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2024-10-13 13:59:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 200 transitions. [2024-10-13 13:59:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-13 13:59:34,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:34,614 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1] [2024-10-13 13:59:34,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 13:59:34,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 13:59:34,819 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:34,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash 204398661, now seen corresponding path program 3 times [2024-10-13 13:59:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764694384] [2024-10-13 13:59:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:59:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-13 13:59:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-13 13:59:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 246 proven. 62 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2024-10-13 13:59:35,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:35,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764694384] [2024-10-13 13:59:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764694384] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913204752] [2024-10-13 13:59:35,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 13:59:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:35,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:35,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:35,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 13:59:35,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-13 13:59:35,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 13:59:35,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 13:59:35,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 210 proven. 7 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-10-13 13:59:35,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 210 proven. 7 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-10-13 13:59:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913204752] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:35,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:35,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 21 [2024-10-13 13:59:35,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552090549] [2024-10-13 13:59:35,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:35,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 13:59:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 13:59:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-10-13 13:59:35,691 INFO L87 Difference]: Start difference. First operand 190 states and 200 transitions. Second operand has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2024-10-13 13:59:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:35,852 INFO L93 Difference]: Finished difference Result 205 states and 213 transitions. [2024-10-13 13:59:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 13:59:35,853 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) Word has length 221 [2024-10-13 13:59:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:35,854 INFO L225 Difference]: With dead ends: 205 [2024-10-13 13:59:35,854 INFO L226 Difference]: Without dead ends: 192 [2024-10-13 13:59:35,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 474 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-10-13 13:59:35,855 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 40 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:35,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 279 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:35,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-13 13:59:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2024-10-13 13:59:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 151 states have internal predecessors, (152), 23 states have call successors, (23), 16 states have call predecessors, (23), 16 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-10-13 13:59:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 198 transitions. [2024-10-13 13:59:35,862 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 198 transitions. Word has length 221 [2024-10-13 13:59:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:35,863 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 198 transitions. [2024-10-13 13:59:35,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2024-10-13 13:59:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 198 transitions. [2024-10-13 13:59:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-13 13:59:35,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:35,865 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 1, 1, 1] [2024-10-13 13:59:35,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-13 13:59:36,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:36,065 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:36,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:36,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1937441536, now seen corresponding path program 4 times [2024-10-13 13:59:36,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:36,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675545328] [2024-10-13 13:59:36,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:36,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:59:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-13 13:59:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-13 13:59:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 13:59:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 155 proven. 3 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2024-10-13 13:59:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675545328] [2024-10-13 13:59:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675545328] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014187957] [2024-10-13 13:59:36,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 13:59:36,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:36,253 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:36,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 13:59:36,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 13:59:36,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 13:59:36,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 13:59:36,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 201 proven. 318 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2024-10-13 13:59:36,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 201 proven. 331 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-10-13 13:59:37,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014187957] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:37,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:37,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 19] total 26 [2024-10-13 13:59:37,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826390967] [2024-10-13 13:59:37,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:37,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 13:59:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 13:59:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2024-10-13 13:59:37,397 INFO L87 Difference]: Start difference. First operand 190 states and 198 transitions. Second operand has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2024-10-13 13:59:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:37,803 INFO L93 Difference]: Finished difference Result 215 states and 223 transitions. [2024-10-13 13:59:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 13:59:37,803 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) Word has length 239 [2024-10-13 13:59:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:37,804 INFO L225 Difference]: With dead ends: 215 [2024-10-13 13:59:37,804 INFO L226 Difference]: Without dead ends: 190 [2024-10-13 13:59:37,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 500 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2024-10-13 13:59:37,805 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 93 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:37,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 454 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 13:59:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-10-13 13:59:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-10-13 13:59:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.0067114093959733) internal successors, (150), 149 states have internal predecessors, (150), 23 states have call successors, (23), 16 states have call predecessors, (23), 15 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-13 13:59:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 195 transitions. [2024-10-13 13:59:37,821 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 195 transitions. Word has length 239 [2024-10-13 13:59:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:37,826 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 195 transitions. [2024-10-13 13:59:37,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2024-10-13 13:59:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 195 transitions. [2024-10-13 13:59:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-13 13:59:37,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:59:37,828 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1] [2024-10-13 13:59:37,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-13 13:59:38,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-10-13 13:59:38,029 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-13 13:59:38,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:59:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2061307917, now seen corresponding path program 5 times [2024-10-13 13:59:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:59:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718240804] [2024-10-13 13:59:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:59:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:59:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:59:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-13 13:59:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:38,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-13 13:59:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-13 13:59:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-13 13:59:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-13 13:59:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 13:59:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:59:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-10-13 13:59:39,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:59:39,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718240804] [2024-10-13 13:59:39,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718240804] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:59:39,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039853562] [2024-10-13 13:59:39,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 13:59:39,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:39,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:59:39,102 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:59:39,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 13:59:39,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-13 13:59:39,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 13:59:39,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-13 13:59:39,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:59:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-10-13 13:59:39,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:59:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-10-13 13:59:41,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039853562] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:59:41,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:59:41,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2024-10-13 13:59:41,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715824971] [2024-10-13 13:59:41,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:59:41,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-13 13:59:41,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:59:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-13 13:59:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2024-10-13 13:59:41,908 INFO L87 Difference]: Start difference. First operand 188 states and 195 transitions. Second operand has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 48 states have internal predecessors, (126), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2024-10-13 13:59:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:59:42,016 INFO L93 Difference]: Finished difference Result 188 states and 195 transitions. [2024-10-13 13:59:42,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 13:59:42,016 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 48 states have internal predecessors, (126), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 240 [2024-10-13 13:59:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:59:42,017 INFO L225 Difference]: With dead ends: 188 [2024-10-13 13:59:42,017 INFO L226 Difference]: Without dead ends: 0 [2024-10-13 13:59:42,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 496 SyntacticMatches, 33 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2024-10-13 13:59:42,019 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:59:42,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 474 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:59:42,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-13 13:59:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-13 13:59:42,023 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) [2024-10-13 13:59:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 13:59:42,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 240 [2024-10-13 13:59:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:59:42,024 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 13:59:42,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 48 states have internal predecessors, (126), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2024-10-13 13:59:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-13 13:59:42,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-13 13:59:42,026 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-10-13 13:59:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-10-13 13:59:42,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-13 13:59:42,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:59:42,236 INFO L407 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:59:42,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-13 13:59:43,701 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 13:59:43,724 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-13 13:59:43,739 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-13 13:59:43,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:59:43 BoogieIcfgContainer [2024-10-13 13:59:43,740 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 13:59:43,740 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 13:59:43,741 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 13:59:43,741 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 13:59:43,742 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:59:15" (3/4) ... [2024-10-13 13:59:43,743 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 13:59:43,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-10-13 13:59:43,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-10-13 13:59:43,749 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-10-13 13:59:43,749 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-13 13:59:43,749 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 13:59:43,750 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 13:59:43,817 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 13:59:43,818 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 13:59:43,818 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 13:59:43,818 INFO L158 Benchmark]: Toolchain (without parser) took 29219.49ms. Allocated memory was 138.4MB in the beginning and 539.0MB in the end (delta: 400.6MB). Free memory was 67.8MB in the beginning and 480.7MB in the end (delta: -412.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 13:59:43,818 INFO L158 Benchmark]: CDTParser took 0.80ms. Allocated memory is still 138.4MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 13:59:43,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.78ms. Allocated memory is still 138.4MB. Free memory was 67.6MB in the beginning and 55.9MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 13:59:43,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.58ms. Allocated memory is still 138.4MB. Free memory was 55.9MB in the beginning and 54.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 13:59:43,819 INFO L158 Benchmark]: Boogie Preprocessor took 56.28ms. Allocated memory was 138.4MB in the beginning and 213.9MB in the end (delta: 75.5MB). Free memory was 54.4MB in the beginning and 184.2MB in the end (delta: -129.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-10-13 13:59:43,821 INFO L158 Benchmark]: RCFGBuilder took 305.83ms. Allocated memory is still 213.9MB. Free memory was 184.2MB in the beginning and 175.2MB in the end (delta: 9.0MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2024-10-13 13:59:43,821 INFO L158 Benchmark]: TraceAbstraction took 28363.95ms. Allocated memory was 213.9MB in the beginning and 539.0MB in the end (delta: 325.1MB). Free memory was 174.1MB in the beginning and 484.9MB in the end (delta: -310.7MB). Peak memory consumption was 263.9MB. Max. memory is 16.1GB. [2024-10-13 13:59:43,821 INFO L158 Benchmark]: Witness Printer took 77.49ms. Allocated memory is still 539.0MB. Free memory was 484.9MB in the beginning and 480.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 13:59:43,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80ms. Allocated memory is still 138.4MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.78ms. Allocated memory is still 138.4MB. Free memory was 67.6MB in the beginning and 55.9MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.58ms. Allocated memory is still 138.4MB. Free memory was 55.9MB in the beginning and 54.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.28ms. Allocated memory was 138.4MB in the beginning and 213.9MB in the end (delta: 75.5MB). Free memory was 54.4MB in the beginning and 184.2MB in the end (delta: -129.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.83ms. Allocated memory is still 213.9MB. Free memory was 184.2MB in the beginning and 175.2MB in the end (delta: 9.0MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 28363.95ms. Allocated memory was 213.9MB in the beginning and 539.0MB in the end (delta: 325.1MB). Free memory was 174.1MB in the beginning and 484.9MB in the end (delta: -310.7MB). Peak memory consumption was 263.9MB. Max. memory is 16.1GB. * Witness Printer took 77.49ms. Allocated memory is still 539.0MB. Free memory was 484.9MB in the beginning and 480.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: 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 3 procedures, 48 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 26.8s, OverallIterations: 32, TraceHistogramMax: 13, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2156 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2092 mSDsluCounter, 8626 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7469 mSDsCounter, 604 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9048 IncrementalHoareTripleChecker+Invalid, 9652 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 604 mSolverCounterUnsat, 1157 mSDtfsCounter, 9048 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4803 GetRequests, 4053 SyntacticMatches, 160 SemanticMatches, 590 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6605 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=289occurred in iteration=19, InterpolantAutomatonStates: 422, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 32 MinimizatonAttempts, 421 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 4482 NumberOfCodeBlocks, 4239 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 6316 ConstructedInterpolants, 0 QuantifiedInterpolants, 12624 SizeOfPredicates, 57 NumberOfNonLiveVariables, 3809 ConjunctsInSsa, 293 ConjunctsInUnsatCore, 70 InterpolantComputations, 15 PerfectInterpolantSequences, 11648/14222 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 - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Requires: (n <= 5) Ensures: (((((\result == 1) || (n != 1)) && ((\result == 0) || (0 < n))) && (n <= 5)) && ((2 == \result) || (3 != n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Requires: ((6 == n) || (n < 5)) Ensures: ((6 == n) || (n < 5)) RESULT: Ultimate proved your program to be correct! [2024-10-13 13:59:43,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE