./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:04:53,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:04:53,068 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:04:53,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:04:53,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:04:53,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:04:53,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:04:53,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:04:53,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:04:53,098 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:04:53,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:04:53,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:04:53,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:04:53,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:04:53,109 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:04:53,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:04:53,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:04:53,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:04:53,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:04:53,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:04:53,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:04:53,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:04:53,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:04:53,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:04:53,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:04:53,111 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:04:53,111 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:04:53,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:04:53,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:04:53,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:04:53,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:04:53,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:04:53,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:04:53,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:04:53,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:04:53,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:04:53,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:04:53,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:04:53,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:04:53,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:04:53,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:04:53,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:04:53,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:04:53,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:04:53,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2024-11-22 23:04:53,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:04:53,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:04:53,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:04:53,320 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:04:53,320 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:04:53,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2024-11-22 23:04:54,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:04:54,650 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:04:54,650 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2024-11-22 23:04:54,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac05ac66/9e4241a7cb7f4cf79bfef275661bc51b/FLAGe4113a86a [2024-11-22 23:04:54,676 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac05ac66/9e4241a7cb7f4cf79bfef275661bc51b [2024-11-22 23:04:54,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:04:54,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:04:54,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:04:54,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:04:54,685 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:04:54,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377520a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54, skipping insertion in model container [2024-11-22 23:04:54,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,702 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:04:54,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:04:54,865 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:04:54,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:04:54,892 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:04:54,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54 WrapperNode [2024-11-22 23:04:54,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:04:54,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:04:54,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:04:54,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:04:54,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,916 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-22 23:04:54,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:04:54,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:04:54,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:04:54,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:04:54,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,943 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]. [2024-11-22 23:04:54,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:04:54,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:04:54,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:04:54,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:04:54,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (1/1) ... [2024-11-22 23:04:54,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:04:54,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:54,981 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) [2024-11-22 23:04:54,983 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 [2024-11-22 23:04:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:04:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:04:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 23:04:55,020 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 23:04:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 23:04:55,020 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 23:04:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:04:55,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:04:55,070 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:04:55,073 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:04:55,230 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-22 23:04:55,230 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:04:55,246 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:04:55,247 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 23:04:55,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:04:55 BoogieIcfgContainer [2024-11-22 23:04:55,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:04:55,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:04:55,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:04:55,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:04:55,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:04:54" (1/3) ... [2024-11-22 23:04:55,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a81751f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:04:55, skipping insertion in model container [2024-11-22 23:04:55,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:04:54" (2/3) ... [2024-11-22 23:04:55,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a81751f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:04:55, skipping insertion in model container [2024-11-22 23:04:55,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:04:55" (3/3) ... [2024-11-22 23:04:55,256 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2024-11-22 23:04:55,270 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:04:55,270 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-22 23:04:55,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:04:55,333 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;@4d236838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:04:55,333 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-22 23:04:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 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) [2024-11-22 23:04:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 23:04:55,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:55,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:04:55,344 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:55,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:55,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2024-11-22 23:04:55,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:55,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800452652] [2024-11-22 23:04:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:55,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:04:55,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:55,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800452652] [2024-11-22 23:04:55,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800452652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:55,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:55,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:04:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144587056] [2024-11-22 23:04:55,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:55,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:04:55,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:04:55,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:04:55,516 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 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 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:04:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:55,553 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-22 23:04:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:04:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 23:04:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:55,561 INFO L225 Difference]: With dead ends: 59 [2024-11-22 23:04:55,561 INFO L226 Difference]: Without dead ends: 45 [2024-11-22 23:04:55,563 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 [2024-11-22 23:04:55,565 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:55,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-22 23:04:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-22 23:04:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 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) [2024-11-22 23:04:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-22 23:04:55,604 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2024-11-22 23:04:55,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:55,604 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-22 23:04:55,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:04:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-22 23:04:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:04:55,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:55,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:04:55,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:04:55,606 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:55,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2024-11-22 23:04:55,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:55,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819434371] [2024-11-22 23:04:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:55,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:04:55,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:55,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819434371] [2024-11-22 23:04:55,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819434371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:55,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:55,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:04:55,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721186351] [2024-11-22 23:04:55,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:55,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:04:55,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:04:55,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:55,700 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:04:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:55,769 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-22 23:04:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:04:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-22 23:04:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:55,771 INFO L225 Difference]: With dead ends: 64 [2024-11-22 23:04:55,772 INFO L226 Difference]: Without dead ends: 58 [2024-11-22 23:04:55,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:04:55,773 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:55,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-22 23:04:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-22 23:04:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 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) [2024-11-22 23:04:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-22 23:04:55,787 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2024-11-22 23:04:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:55,788 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-22 23:04:55,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:04:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-22 23:04:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 23:04:55,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:55,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:04:55,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:04:55,790 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:55,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2024-11-22 23:04:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937395336] [2024-11-22 23:04:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:55,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:04:55,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937395336] [2024-11-22 23:04:55,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937395336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:55,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:55,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:04:55,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465190589] [2024-11-22 23:04:55,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:55,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:04:55,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:04:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:04:55,845 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-22 23:04:55,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:55,875 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2024-11-22 23:04:55,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:04:55,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2024-11-22 23:04:55,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:55,877 INFO L225 Difference]: With dead ends: 58 [2024-11-22 23:04:55,877 INFO L226 Difference]: Without dead ends: 56 [2024-11-22 23:04:55,877 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 [2024-11-22 23:04:55,878 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:55,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-22 23:04:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-22 23:04:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 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) [2024-11-22 23:04:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-22 23:04:55,891 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2024-11-22 23:04:55,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:55,893 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-22 23:04:55,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-22 23:04:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-22 23:04:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 23:04:55,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:55,894 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:04:55,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 23:04:55,894 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:55,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2024-11-22 23:04:55,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:55,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596969872] [2024-11-22 23:04:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:55,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:04:56,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596969872] [2024-11-22 23:04:56,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596969872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:56,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:56,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:04:56,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279154592] [2024-11-22 23:04:56,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:56,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:04:56,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:56,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:04:56,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:04:56,015 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-22 23:04:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:56,136 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2024-11-22 23:04:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:04:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2024-11-22 23:04:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:56,137 INFO L225 Difference]: With dead ends: 58 [2024-11-22 23:04:56,137 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 23:04:56,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:04:56,138 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:56,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:04:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 23:04:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-11-22 23:04:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 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) [2024-11-22 23:04:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-22 23:04:56,150 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2024-11-22 23:04:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:56,150 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-22 23:04:56,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-22 23:04:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-22 23:04:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 23:04:56,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:56,151 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:04:56,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 23:04:56,152 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:56,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2024-11-22 23:04:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:56,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997165187] [2024-11-22 23:04:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:04:56,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:56,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997165187] [2024-11-22 23:04:56,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997165187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:56,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:56,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:04:56,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623154443] [2024-11-22 23:04:56,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:56,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:04:56,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:04:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:56,263 INFO L87 Difference]: Start difference. First operand 50 states and 59 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) [2024-11-22 23:04:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:56,289 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-22 23:04:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:04:56,290 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 23 [2024-11-22 23:04:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:56,291 INFO L225 Difference]: With dead ends: 74 [2024-11-22 23:04:56,292 INFO L226 Difference]: Without dead ends: 69 [2024-11-22 23:04:56,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:56,295 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 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 [2024-11-22 23:04:56,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-22 23:04:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-22 23:04:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 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) [2024-11-22 23:04:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-22 23:04:56,304 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2024-11-22 23:04:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:56,304 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-22 23:04:56,304 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) [2024-11-22 23:04:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-22 23:04:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:04:56,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:56,305 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, 1] [2024-11-22 23:04:56,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 23:04:56,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:56,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2024-11-22 23:04:56,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590803494] [2024-11-22 23:04:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 23:04:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590803494] [2024-11-22 23:04:56,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590803494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719140040] [2024-11-22 23:04:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:56,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:56,403 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) [2024-11-22 23:04:56,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:04:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:56,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 23:04:56,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:04:56,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:04:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719140040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:56,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:04:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-22 23:04:56,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316256234] [2024-11-22 23:04:56,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:56,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:04:56,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:04:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 23:04:56,534 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-22 23:04:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:56,636 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2024-11-22 23:04:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:04:56,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 24 [2024-11-22 23:04:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:56,638 INFO L225 Difference]: With dead ends: 113 [2024-11-22 23:04:56,638 INFO L226 Difference]: Without dead ends: 63 [2024-11-22 23:04:56,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:04:56,640 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:56,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:04:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-22 23:04:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-11-22 23:04:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 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) [2024-11-22 23:04:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-22 23:04:56,647 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2024-11-22 23:04:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:56,647 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-22 23:04:56,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-22 23:04:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-22 23:04:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 23:04:56,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:56,648 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, 1] [2024-11-22 23:04:56,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 23:04:56,849 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 [2024-11-22 23:04:56,851 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:56,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:56,851 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2024-11-22 23:04:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:56,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015671719] [2024-11-22 23:04:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:56,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 23:04:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015671719] [2024-11-22 23:04:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015671719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:04:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624223669] [2024-11-22 23:04:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:56,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:04:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:04:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:56,929 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:04:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:56,960 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-22 23:04:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:04:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-22 23:04:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:56,961 INFO L225 Difference]: With dead ends: 83 [2024-11-22 23:04:56,961 INFO L226 Difference]: Without dead ends: 78 [2024-11-22 23:04:56,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:56,962 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:56,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-22 23:04:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-11-22 23:04:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 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) [2024-11-22 23:04:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2024-11-22 23:04:56,976 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2024-11-22 23:04:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:56,976 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2024-11-22 23:04:56,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:04:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2024-11-22 23:04:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 23:04:56,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:56,977 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] [2024-11-22 23:04:56,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 23:04:56,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:56,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2024-11-22 23:04:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:56,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975239202] [2024-11-22 23:04:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 23:04:57,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975239202] [2024-11-22 23:04:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975239202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:57,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:04:57,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662226137] [2024-11-22 23:04:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:57,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:04:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:57,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:04:57,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:57,037 INFO L87 Difference]: Start difference. First operand 69 states and 89 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) [2024-11-22 23:04:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:57,070 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-22 23:04:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:04:57,070 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 29 [2024-11-22 23:04:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:57,071 INFO L225 Difference]: With dead ends: 83 [2024-11-22 23:04:57,071 INFO L226 Difference]: Without dead ends: 81 [2024-11-22 23:04:57,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:57,072 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:57,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-22 23:04:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2024-11-22 23:04:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 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) [2024-11-22 23:04:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-11-22 23:04:57,079 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2024-11-22 23:04:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:57,079 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-11-22 23:04:57,079 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) [2024-11-22 23:04:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-11-22 23:04:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:04:57,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:57,082 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, 1] [2024-11-22 23:04:57,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 23:04:57,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:57,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2024-11-22 23:04:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:57,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830222190] [2024-11-22 23:04:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:57,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:04:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830222190] [2024-11-22 23:04:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830222190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771146847] [2024-11-22 23:04:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:57,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:57,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:57,147 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) [2024-11-22 23:04:57,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:04:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:57,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:04:57,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:04:57,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:04:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771146847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:57,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-22 23:04:57,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254668419] [2024-11-22 23:04:57,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:57,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 23:04:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 23:04:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:04:57,372 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 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) [2024-11-22 23:04:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:57,711 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions. [2024-11-22 23:04:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 23:04:57,711 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 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 30 [2024-11-22 23:04:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:57,713 INFO L225 Difference]: With dead ends: 204 [2024-11-22 23:04:57,714 INFO L226 Difference]: Without dead ends: 135 [2024-11-22 23:04:57,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-22 23:04:57,717 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 130 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:57,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 557 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:04:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-22 23:04:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 121. [2024-11-22 23:04:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (35), 17 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-22 23:04:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 158 transitions. [2024-11-22 23:04:57,731 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 158 transitions. Word has length 30 [2024-11-22 23:04:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:57,732 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 158 transitions. [2024-11-22 23:04:57,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 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) [2024-11-22 23:04:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 158 transitions. [2024-11-22 23:04:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-22 23:04:57,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:57,733 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] [2024-11-22 23:04:57,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 23:04:57,937 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 [2024-11-22 23:04:57,938 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:57,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2024-11-22 23:04:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103431322] [2024-11-22 23:04:57,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:04:57,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:57,946 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:04:57,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:04:57,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:57,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103431322] [2024-11-22 23:04:57,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103431322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:57,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966065281] [2024-11-22 23:04:57,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:04:57,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:57,996 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) [2024-11-22 23:04:57,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:04:58,027 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:04:58,028 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:58,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 23:04:58,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:04:58,065 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:04:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966065281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:58,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:04:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-22 23:04:58,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820836397] [2024-11-22 23:04:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:58,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:04:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:04:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:04:58,068 INFO L87 Difference]: Start difference. First operand 121 states and 158 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2024-11-22 23:04:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:58,089 INFO L93 Difference]: Finished difference Result 133 states and 175 transitions. [2024-11-22 23:04:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:04:58,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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 42 [2024-11-22 23:04:58,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:58,091 INFO L225 Difference]: With dead ends: 133 [2024-11-22 23:04:58,091 INFO L226 Difference]: Without dead ends: 132 [2024-11-22 23:04:58,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:04:58,092 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 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 [2024-11-22 23:04:58,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-22 23:04:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2024-11-22 23:04:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.153061224489796) internal successors, (113), 100 states have internal predecessors, (113), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (35), 20 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-22 23:04:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 164 transitions. [2024-11-22 23:04:58,103 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 164 transitions. Word has length 42 [2024-11-22 23:04:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:58,104 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 164 transitions. [2024-11-22 23:04:58,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2024-11-22 23:04:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 164 transitions. [2024-11-22 23:04:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-22 23:04:58,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:58,121 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, 1] [2024-11-22 23:04:58,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 23:04:58,322 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 [2024-11-22 23:04:58,322 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:58,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2024-11-22 23:04:58,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:58,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606371426] [2024-11-22 23:04:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:58,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:04:58,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:58,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606371426] [2024-11-22 23:04:58,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606371426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:58,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395846653] [2024-11-22 23:04:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:58,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:58,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:58,379 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) [2024-11-22 23:04:58,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:04:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:58,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 23:04:58,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:04:58,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:04:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395846653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:58,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:04:58,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-22 23:04:58,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148385984] [2024-11-22 23:04:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:58,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:04:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:04:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:04:58,449 INFO L87 Difference]: Start difference. First operand 127 states and 164 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-22 23:04:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:58,477 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2024-11-22 23:04:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:04:58,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 43 [2024-11-22 23:04:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:58,478 INFO L225 Difference]: With dead ends: 155 [2024-11-22 23:04:58,478 INFO L226 Difference]: Without dead ends: 154 [2024-11-22 23:04:58,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:04:58,479 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:58,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-22 23:04:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2024-11-22 23:04:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 108 states have internal predecessors, (122), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (41), 23 states have call predecessors, (41), 17 states have call successors, (41) [2024-11-22 23:04:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 181 transitions. [2024-11-22 23:04:58,494 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 181 transitions. Word has length 43 [2024-11-22 23:04:58,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:58,495 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 181 transitions. [2024-11-22 23:04:58,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-22 23:04:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 181 transitions. [2024-11-22 23:04:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 23:04:58,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:58,498 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:04:58,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 23:04:58,699 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 [2024-11-22 23:04:58,699 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:58,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1614425526, now seen corresponding path program 1 times [2024-11-22 23:04:58,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:58,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943436168] [2024-11-22 23:04:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:58,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-22 23:04:58,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943436168] [2024-11-22 23:04:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943436168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:04:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:04:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:04:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520458893] [2024-11-22 23:04:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:04:58,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:04:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:04:58,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:58,760 INFO L87 Difference]: Start difference. First operand 138 states and 181 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:04:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:58,787 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2024-11-22 23:04:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:04:58,787 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-22 23:04:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:58,788 INFO L225 Difference]: With dead ends: 154 [2024-11-22 23:04:58,789 INFO L226 Difference]: Without dead ends: 153 [2024-11-22 23:04:58,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:04:58,789 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:58,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:04:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-22 23:04:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2024-11-22 23:04:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 105 states have internal predecessors, (119), 17 states have call successors, (17), 6 states have call predecessors, (17), 9 states have return successors, (38), 22 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-22 23:04:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 174 transitions. [2024-11-22 23:04:58,799 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 174 transitions. Word has length 44 [2024-11-22 23:04:58,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:58,799 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 174 transitions. [2024-11-22 23:04:58,799 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:04:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 174 transitions. [2024-11-22 23:04:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-22 23:04:58,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:58,800 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] [2024-11-22 23:04:58,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 23:04:58,800 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:58,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2086948818, now seen corresponding path program 1 times [2024-11-22 23:04:58,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:58,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114500051] [2024-11-22 23:04:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 23:04:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114500051] [2024-11-22 23:04:58,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114500051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728593652] [2024-11-22 23:04:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:58,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:58,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:58,846 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) [2024-11-22 23:04:58,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:04:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:58,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:04:58,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:04:59,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:04:59,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728593652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:59,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 31 [2024-11-22 23:04:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802562433] [2024-11-22 23:04:59,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:59,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-22 23:04:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-22 23:04:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2024-11-22 23:04:59,236 INFO L87 Difference]: Start difference. First operand 134 states and 174 transitions. Second operand has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:04:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:59,716 INFO L93 Difference]: Finished difference Result 298 states and 402 transitions. [2024-11-22 23:04:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 23:04:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 48 [2024-11-22 23:04:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:59,717 INFO L225 Difference]: With dead ends: 298 [2024-11-22 23:04:59,718 INFO L226 Difference]: Without dead ends: 183 [2024-11-22 23:04:59,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=1700, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 23:04:59,719 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 290 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:59,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 399 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:04:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-22 23:04:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 169. [2024-11-22 23:04:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 132 states have internal predecessors, (151), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2024-11-22 23:04:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 211 transitions. [2024-11-22 23:04:59,727 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 211 transitions. Word has length 48 [2024-11-22 23:04:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:59,727 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 211 transitions. [2024-11-22 23:04:59,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:04:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 211 transitions. [2024-11-22 23:04:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-22 23:04:59,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:59,732 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 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] [2024-11-22 23:04:59,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 23:04:59,932 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,SelfDestructingSolverStorable12 [2024-11-22 23:04:59,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:04:59,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash 632910190, now seen corresponding path program 1 times [2024-11-22 23:04:59,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:59,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661497123] [2024-11-22 23:04:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 23:04:59,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661497123] [2024-11-22 23:04:59,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661497123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115026890] [2024-11-22 23:04:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:04:59,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:59,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:59,973 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) [2024-11-22 23:04:59,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:05:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:00,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:00,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 23:05:00,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 23:05:00,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115026890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:00,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:00,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2024-11-22 23:05:00,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395482802] [2024-11-22 23:05:00,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:00,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 23:05:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 23:05:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-22 23:05:00,251 INFO L87 Difference]: Start difference. First operand 169 states and 211 transitions. Second operand has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-22 23:05:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:00,576 INFO L93 Difference]: Finished difference Result 315 states and 397 transitions. [2024-11-22 23:05:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 23:05:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2024-11-22 23:05:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:00,577 INFO L225 Difference]: With dead ends: 315 [2024-11-22 23:05:00,578 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 23:05:00,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2024-11-22 23:05:00,579 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 131 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:00,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 268 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 23:05:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 165. [2024-11-22 23:05:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.124031007751938) internal successors, (145), 130 states have internal predecessors, (145), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 26 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-22 23:05:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2024-11-22 23:05:00,586 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 61 [2024-11-22 23:05:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:00,587 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2024-11-22 23:05:00,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-22 23:05:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2024-11-22 23:05:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-22 23:05:00,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:00,587 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:00,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:00,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:00,793 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:00,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1305190632, now seen corresponding path program 1 times [2024-11-22 23:05:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313036805] [2024-11-22 23:05:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 23:05:00,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:00,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313036805] [2024-11-22 23:05:00,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313036805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:00,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:00,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:00,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140835158] [2024-11-22 23:05:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:00,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:00,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:00,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:00,840 INFO L87 Difference]: Start difference. First operand 165 states and 197 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) [2024-11-22 23:05:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:00,861 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2024-11-22 23:05:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:00,861 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 55 [2024-11-22 23:05:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:00,862 INFO L225 Difference]: With dead ends: 169 [2024-11-22 23:05:00,862 INFO L226 Difference]: Without dead ends: 168 [2024-11-22 23:05:00,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:00,863 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:00,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-22 23:05:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2024-11-22 23:05:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 131 states have internal predecessors, (146), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 27 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-22 23:05:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2024-11-22 23:05:00,870 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 55 [2024-11-22 23:05:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:00,870 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2024-11-22 23:05:00,870 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) [2024-11-22 23:05:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2024-11-22 23:05:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 23:05:00,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:00,871 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:00,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 23:05:00,871 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:00,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:00,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1806203829, now seen corresponding path program 1 times [2024-11-22 23:05:00,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:00,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610295384] [2024-11-22 23:05:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:00,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 23:05:00,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:00,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610295384] [2024-11-22 23:05:00,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610295384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:00,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:00,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:00,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113326029] [2024-11-22 23:05:00,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:00,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:00,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:00,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:00,912 INFO L87 Difference]: Start difference. First operand 167 states and 198 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-11-22 23:05:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:00,929 INFO L93 Difference]: Finished difference Result 169 states and 200 transitions. [2024-11-22 23:05:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:00,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 56 [2024-11-22 23:05:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:00,931 INFO L225 Difference]: With dead ends: 169 [2024-11-22 23:05:00,931 INFO L226 Difference]: Without dead ends: 168 [2024-11-22 23:05:00,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:00,932 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:00,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-22 23:05:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2024-11-22 23:05:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.1111111111111112) internal successors, (140), 127 states have internal predecessors, (140), 20 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (30), 25 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-22 23:05:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 190 transitions. [2024-11-22 23:05:00,943 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 190 transitions. Word has length 56 [2024-11-22 23:05:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:00,943 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 190 transitions. [2024-11-22 23:05:00,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-11-22 23:05:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 190 transitions. [2024-11-22 23:05:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 23:05:00,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:00,944 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:00,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 23:05:00,944 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:00,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1795256181, now seen corresponding path program 1 times [2024-11-22 23:05:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:00,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174838736] [2024-11-22 23:05:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-22 23:05:00,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174838736] [2024-11-22 23:05:00,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174838736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:00,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:00,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:00,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671087829] [2024-11-22 23:05:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:00,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:00,988 INFO L87 Difference]: Start difference. First operand 161 states and 190 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) [2024-11-22 23:05:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:01,011 INFO L93 Difference]: Finished difference Result 168 states and 199 transitions. [2024-11-22 23:05:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:01,012 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 56 [2024-11-22 23:05:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:01,012 INFO L225 Difference]: With dead ends: 168 [2024-11-22 23:05:01,013 INFO L226 Difference]: Without dead ends: 167 [2024-11-22 23:05:01,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:01,013 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:01,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 117 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-22 23:05:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2024-11-22 23:05:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.1085271317829457) internal successors, (143), 130 states have internal predecessors, (143), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (32), 26 states have call predecessors, (32), 19 states have call successors, (32) [2024-11-22 23:05:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 195 transitions. [2024-11-22 23:05:01,023 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 195 transitions. Word has length 56 [2024-11-22 23:05:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:01,023 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 195 transitions. [2024-11-22 23:05:01,023 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) [2024-11-22 23:05:01,023 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 195 transitions. [2024-11-22 23:05:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-22 23:05:01,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:01,024 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:01,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 23:05:01,024 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:01,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash 181633336, now seen corresponding path program 1 times [2024-11-22 23:05:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322773769] [2024-11-22 23:05:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 23:05:01,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:01,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322773769] [2024-11-22 23:05:01,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322773769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:01,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049414811] [2024-11-22 23:05:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:01,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:01,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:01,141 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) [2024-11-22 23:05:01,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:05:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:01,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 23:05:01,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-22 23:05:01,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049414811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:01,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:01,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-22 23:05:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621363690] [2024-11-22 23:05:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:01,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 23:05:01,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 23:05:01,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:01,244 INFO L87 Difference]: Start difference. First operand 165 states and 195 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 23:05:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:01,293 INFO L93 Difference]: Finished difference Result 200 states and 240 transitions. [2024-11-22 23:05:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 23:05:01,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2024-11-22 23:05:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:01,294 INFO L225 Difference]: With dead ends: 200 [2024-11-22 23:05:01,294 INFO L226 Difference]: Without dead ends: 199 [2024-11-22 23:05:01,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:01,294 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:01,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 178 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-22 23:05:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 175. [2024-11-22 23:05:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.1102941176470589) internal successors, (151), 138 states have internal predecessors, (151), 21 states have call successors, (21), 8 states have call predecessors, (21), 14 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2024-11-22 23:05:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2024-11-22 23:05:01,307 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 57 [2024-11-22 23:05:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:01,307 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2024-11-22 23:05:01,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 23:05:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2024-11-22 23:05:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-22 23:05:01,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:01,309 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 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] [2024-11-22 23:05:01,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:01,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:01,513 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:01,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2056240160, now seen corresponding path program 1 times [2024-11-22 23:05:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:01,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092261872] [2024-11-22 23:05:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:01,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 23:05:01,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:01,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092261872] [2024-11-22 23:05:01,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092261872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:01,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:01,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:01,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367535610] [2024-11-22 23:05:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:01,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:01,555 INFO L87 Difference]: Start difference. First operand 175 states and 211 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) [2024-11-22 23:05:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:01,577 INFO L93 Difference]: Finished difference Result 183 states and 219 transitions. [2024-11-22 23:05:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:01,577 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 [2024-11-22 23:05:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:01,578 INFO L225 Difference]: With dead ends: 183 [2024-11-22 23:05:01,578 INFO L226 Difference]: Without dead ends: 182 [2024-11-22 23:05:01,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:01,579 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 145 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 [2024-11-22 23:05:01,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 145 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-22 23:05:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2024-11-22 23:05:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.0955882352941178) internal successors, (149), 138 states have internal predecessors, (149), 21 states have call successors, (21), 8 states have call predecessors, (21), 14 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2024-11-22 23:05:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 209 transitions. [2024-11-22 23:05:01,586 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 209 transitions. Word has length 61 [2024-11-22 23:05:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:01,587 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 209 transitions. [2024-11-22 23:05:01,587 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) [2024-11-22 23:05:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 209 transitions. [2024-11-22 23:05:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-22 23:05:01,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:01,587 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 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] [2024-11-22 23:05:01,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 23:05:01,588 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:01,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1924796246, now seen corresponding path program 1 times [2024-11-22 23:05:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:01,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569153019] [2024-11-22 23:05:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 23:05:01,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569153019] [2024-11-22 23:05:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569153019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020402667] [2024-11-22 23:05:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:01,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:01,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:01,722 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) [2024-11-22 23:05:01,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:05:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:01,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:01,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 23:05:01,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-22 23:05:02,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020402667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:02,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:02,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 25 [2024-11-22 23:05:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037410095] [2024-11-22 23:05:02,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:02,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 23:05:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:02,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 23:05:02,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-11-22 23:05:02,020 INFO L87 Difference]: Start difference. First operand 175 states and 209 transitions. Second operand has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:05:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:02,600 INFO L93 Difference]: Finished difference Result 324 states and 383 transitions. [2024-11-22 23:05:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 23:05:02,600 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 74 [2024-11-22 23:05:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:02,602 INFO L225 Difference]: With dead ends: 324 [2024-11-22 23:05:02,602 INFO L226 Difference]: Without dead ends: 206 [2024-11-22 23:05:02,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 23:05:02,603 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 151 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:02,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 268 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:05:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-22 23:05:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 162. [2024-11-22 23:05:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 125 states have (on average 1.088) internal successors, (136), 129 states have internal predecessors, (136), 20 states have call successors, (20), 8 states have call predecessors, (20), 13 states have return successors, (33), 24 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-22 23:05:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2024-11-22 23:05:02,611 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 74 [2024-11-22 23:05:02,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:02,611 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2024-11-22 23:05:02,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:05:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2024-11-22 23:05:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-22 23:05:02,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:02,612 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:02,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:02,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:02,813 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:02,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash 196968042, now seen corresponding path program 1 times [2024-11-22 23:05:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874508891] [2024-11-22 23:05:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 23:05:02,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:02,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874508891] [2024-11-22 23:05:02,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874508891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:02,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006691885] [2024-11-22 23:05:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:02,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:02,910 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) [2024-11-22 23:05:02,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 23:05:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:02,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 23:05:02,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:05:02,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 23:05:03,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006691885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:03,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:03,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-22 23:05:03,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163198992] [2024-11-22 23:05:03,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:03,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:05:03,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:05:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:05:03,156 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:05:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:03,296 INFO L93 Difference]: Finished difference Result 275 states and 318 transitions. [2024-11-22 23:05:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 23:05:03,296 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 70 [2024-11-22 23:05:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:03,298 INFO L225 Difference]: With dead ends: 275 [2024-11-22 23:05:03,299 INFO L226 Difference]: Without dead ends: 169 [2024-11-22 23:05:03,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:05:03,300 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 89 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:03,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 213 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-22 23:05:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2024-11-22 23:05:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 125 states have (on average 1.088) internal successors, (136), 129 states have internal predecessors, (136), 20 states have call successors, (20), 8 states have call predecessors, (20), 13 states have return successors, (31), 24 states have call predecessors, (31), 19 states have call successors, (31) [2024-11-22 23:05:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2024-11-22 23:05:03,307 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 70 [2024-11-22 23:05:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:03,308 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2024-11-22 23:05:03,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:05:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2024-11-22 23:05:03,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-22 23:05:03,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:03,309 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:03,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 23:05:03,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:03,513 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:03,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1001511063, now seen corresponding path program 1 times [2024-11-22 23:05:03,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:03,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829099726] [2024-11-22 23:05:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 23:05:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829099726] [2024-11-22 23:05:03,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829099726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80724894] [2024-11-22 23:05:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:03,607 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) [2024-11-22 23:05:03,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 23:05:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:03,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:03,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 23:05:03,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 23:05:03,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80724894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:03,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:03,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-11-22 23:05:03,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049341117] [2024-11-22 23:05:03,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:03,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 23:05:03,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:03,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 23:05:03,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:05:03,763 INFO L87 Difference]: Start difference. First operand 162 states and 187 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:05:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:03,859 INFO L93 Difference]: Finished difference Result 258 states and 295 transitions. [2024-11-22 23:05:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 23:05:03,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2024-11-22 23:05:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:03,861 INFO L225 Difference]: With dead ends: 258 [2024-11-22 23:05:03,861 INFO L226 Difference]: Without dead ends: 163 [2024-11-22 23:05:03,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:05:03,862 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 66 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:03,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 214 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-22 23:05:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2024-11-22 23:05:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 123 states have (on average 1.089430894308943) internal successors, (134), 128 states have internal predecessors, (134), 20 states have call successors, (20), 8 states have call predecessors, (20), 13 states have return successors, (30), 23 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-22 23:05:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 184 transitions. [2024-11-22 23:05:03,872 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 184 transitions. Word has length 71 [2024-11-22 23:05:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:03,872 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 184 transitions. [2024-11-22 23:05:03,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:05:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 184 transitions. [2024-11-22 23:05:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-22 23:05:03,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:03,873 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 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, 1] [2024-11-22 23:05:03,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:04,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 23:05:04,074 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:04,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash -350756515, now seen corresponding path program 1 times [2024-11-22 23:05:04,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:04,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792894789] [2024-11-22 23:05:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:04,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:05:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792894789] [2024-11-22 23:05:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792894789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770179472] [2024-11-22 23:05:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:04,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:04,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:04,231 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) [2024-11-22 23:05:04,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 23:05:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:04,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 23:05:04,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 23:05:04,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-22 23:05:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770179472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:04,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:04,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2024-11-22 23:05:04,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820284172] [2024-11-22 23:05:04,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:04,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 23:05:04,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 23:05:04,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2024-11-22 23:05:04,684 INFO L87 Difference]: Start difference. First operand 160 states and 184 transitions. Second operand has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-22 23:05:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:05,490 INFO L93 Difference]: Finished difference Result 318 states and 373 transitions. [2024-11-22 23:05:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 23:05:05,491 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 75 [2024-11-22 23:05:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:05,492 INFO L225 Difference]: With dead ends: 318 [2024-11-22 23:05:05,492 INFO L226 Difference]: Without dead ends: 192 [2024-11-22 23:05:05,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=471, Invalid=3311, Unknown=0, NotChecked=0, Total=3782 [2024-11-22 23:05:05,494 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 175 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:05,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 319 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 23:05:05,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-22 23:05:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 166. [2024-11-22 23:05:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 127 states have (on average 1.078740157480315) internal successors, (137), 133 states have internal predecessors, (137), 21 states have call successors, (21), 8 states have call predecessors, (21), 14 states have return successors, (33), 24 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-22 23:05:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2024-11-22 23:05:05,503 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 75 [2024-11-22 23:05:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:05,503 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2024-11-22 23:05:05,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-22 23:05:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2024-11-22 23:05:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-22 23:05:05,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:05,505 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1] [2024-11-22 23:05:05,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:05,705 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,SelfDestructingSolverStorable22 [2024-11-22 23:05:05,706 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:05,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1803732141, now seen corresponding path program 1 times [2024-11-22 23:05:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:05,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013771646] [2024-11-22 23:05:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-22 23:05:05,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013771646] [2024-11-22 23:05:05,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013771646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116443257] [2024-11-22 23:05:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:05,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:05,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:05,754 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) [2024-11-22 23:05:05,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 23:05:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:05,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 23:05:05,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-22 23:05:05,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-22 23:05:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116443257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:06,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 15 [2024-11-22 23:05:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304145019] [2024-11-22 23:05:06,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:06,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 23:05:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 23:05:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:06,024 INFO L87 Difference]: Start difference. First operand 166 states and 191 transitions. Second operand has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-22 23:05:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:06,146 INFO L93 Difference]: Finished difference Result 273 states and 319 transitions. [2024-11-22 23:05:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:05:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 88 [2024-11-22 23:05:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:06,148 INFO L225 Difference]: With dead ends: 273 [2024-11-22 23:05:06,148 INFO L226 Difference]: Without dead ends: 153 [2024-11-22 23:05:06,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:05:06,148 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 96 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:06,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 233 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-22 23:05:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2024-11-22 23:05:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 119 states have internal predecessors, (121), 18 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (25), 20 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-22 23:05:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2024-11-22 23:05:06,155 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 88 [2024-11-22 23:05:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:06,155 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2024-11-22 23:05:06,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-22 23:05:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2024-11-22 23:05:06,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-22 23:05:06,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:06,156 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:06,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 23:05:06,360 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,SelfDestructingSolverStorable23 [2024-11-22 23:05:06,361 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:06,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2016411688, now seen corresponding path program 2 times [2024-11-22 23:05:06,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:06,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154365436] [2024-11-22 23:05:06,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:06,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:06,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:06,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 23:05:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154365436] [2024-11-22 23:05:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154365436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929412179] [2024-11-22 23:05:06,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:06,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:06,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:06,555 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) [2024-11-22 23:05:06,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 23:05:06,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:06,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:06,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 23:05:06,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 23:05:06,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 23:05:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929412179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:07,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:07,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-22 23:05:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984517791] [2024-11-22 23:05:07,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:07,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 23:05:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 23:05:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 23:05:07,121 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-22 23:05:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:07,370 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2024-11-22 23:05:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 23:05:07,370 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 89 [2024-11-22 23:05:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:07,371 INFO L225 Difference]: With dead ends: 183 [2024-11-22 23:05:07,371 INFO L226 Difference]: Without dead ends: 181 [2024-11-22 23:05:07,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 154 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1721, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 23:05:07,372 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 21 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:07,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 587 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-22 23:05:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 146. [2024-11-22 23:05:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 113 states have (on average 1.0530973451327434) internal successors, (119), 117 states have internal predecessors, (119), 18 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (25), 20 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-22 23:05:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2024-11-22 23:05:07,380 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 89 [2024-11-22 23:05:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:07,380 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2024-11-22 23:05:07,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-22 23:05:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2024-11-22 23:05:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-22 23:05:07,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:07,381 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:07,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 23:05:07,584 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,SelfDestructingSolverStorable24 [2024-11-22 23:05:07,585 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:07,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1915747185, now seen corresponding path program 1 times [2024-11-22 23:05:07,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:07,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394507653] [2024-11-22 23:05:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 23:05:07,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:07,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394507653] [2024-11-22 23:05:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394507653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:07,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18761553] [2024-11-22 23:05:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:07,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:07,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:07,760 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) [2024-11-22 23:05:07,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 23:05:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:07,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 23:05:07,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-22 23:05:07,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 23:05:08,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18761553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:08,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:08,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2024-11-22 23:05:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861055116] [2024-11-22 23:05:08,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:08,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 23:05:08,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 23:05:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 23:05:08,293 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-22 23:05:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:08,401 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2024-11-22 23:05:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 23:05:08,402 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 90 [2024-11-22 23:05:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:08,402 INFO L225 Difference]: With dead ends: 167 [2024-11-22 23:05:08,402 INFO L226 Difference]: Without dead ends: 152 [2024-11-22 23:05:08,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 157 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 23:05:08,403 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:08,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 471 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-22 23:05:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2024-11-22 23:05:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 93 states have (on average 1.043010752688172) internal successors, (97), 97 states have internal predecessors, (97), 15 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (17), 14 states have call predecessors, (17), 14 states have call successors, (17) [2024-11-22 23:05:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2024-11-22 23:05:08,409 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 90 [2024-11-22 23:05:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:08,409 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2024-11-22 23:05:08,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-22 23:05:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2024-11-22 23:05:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 23:05:08,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:08,410 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:08,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 23:05:08,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:08,615 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:08,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash 324878117, now seen corresponding path program 1 times [2024-11-22 23:05:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:08,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097863017] [2024-11-22 23:05:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-22 23:05:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097863017] [2024-11-22 23:05:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097863017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208098394] [2024-11-22 23:05:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:08,691 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) [2024-11-22 23:05:08,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 23:05:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:08,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:08,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-22 23:05:08,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-22 23:05:08,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208098394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:08,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-22 23:05:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095549540] [2024-11-22 23:05:08,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:08,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 23:05:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 23:05:08,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 23:05:08,944 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:05:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:09,017 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2024-11-22 23:05:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 23:05:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 124 [2024-11-22 23:05:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:09,018 INFO L225 Difference]: With dead ends: 133 [2024-11-22 23:05:09,018 INFO L226 Difference]: Without dead ends: 118 [2024-11-22 23:05:09,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 242 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:05:09,019 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:09,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 112 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-22 23:05:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-22 23:05:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 95 states have internal predecessors, (95), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-22 23:05:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2024-11-22 23:05:09,038 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 124 [2024-11-22 23:05:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:09,039 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2024-11-22 23:05:09,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:05:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2024-11-22 23:05:09,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 23:05:09,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:09,040 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 23:05:09,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:09,240 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,SelfDestructingSolverStorable26 [2024-11-22 23:05:09,241 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:09,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:09,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1419353795, now seen corresponding path program 2 times [2024-11-22 23:05:09,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:09,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496157372] [2024-11-22 23:05:09,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:09,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:09,258 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:09,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-22 23:05:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496157372] [2024-11-22 23:05:09,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496157372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907362610] [2024-11-22 23:05:09,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:09,606 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) [2024-11-22 23:05:09,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 23:05:09,661 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:09,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:09,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 23:05:09,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-22 23:05:09,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-22 23:05:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907362610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:10,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:10,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2024-11-22 23:05:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857187370] [2024-11-22 23:05:10,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:10,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-22 23:05:10,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-22 23:05:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 23:05:10,736 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-22 23:05:10,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:10,879 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2024-11-22 23:05:10,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 23:05:10,880 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 143 [2024-11-22 23:05:10,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:10,880 INFO L225 Difference]: With dead ends: 143 [2024-11-22 23:05:10,880 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 23:05:10,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 257 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1879, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 23:05:10,882 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:10,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 651 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 23:05:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 23:05:10,882 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) [2024-11-22 23:05:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 23:05:10,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2024-11-22 23:05:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:10,882 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 23:05:10,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-22 23:05:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 23:05:10,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 23:05:10,885 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-11-22 23:05:10,885 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-11-22 23:05:10,885 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-11-22 23:05:10,885 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-11-22 23:05:10,885 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-11-22 23:05:10,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-11-22 23:05:10,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-11-22 23:05:10,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-11-22 23:05:10,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-11-22 23:05:10,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-11-22 23:05:10,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-11-22 23:05:10,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-11-22 23:05:10,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 23:05:11,090 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,SelfDestructingSolverStorable27 [2024-11-22 23:05:11,093 INFO L407 BasicCegarLoop]: Path program histogram: [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] [2024-11-22 23:05:11,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 23:05:13,579 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 23:05:13,597 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-22 23:05:13,608 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-22 23:05:13,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:05:13 BoogieIcfgContainer [2024-11-22 23:05:13,609 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 23:05:13,610 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 23:05:13,610 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 23:05:13,610 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 23:05:13,610 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:04:55" (3/4) ... [2024-11-22 23:05:13,612 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 23:05:13,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-22 23:05:13,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-22 23:05:13,618 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 23:05:13,618 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 23:05:13,618 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 23:05:13,619 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 23:05:13,689 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 23:05:13,690 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 23:05:13,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 23:05:13,690 INFO L158 Benchmark]: Toolchain (without parser) took 19011.32ms. Allocated memory was 192.9MB in the beginning and 406.8MB in the end (delta: 213.9MB). Free memory was 164.0MB in the beginning and 369.5MB in the end (delta: -205.5MB). Peak memory consumption was 246.1MB. Max. memory is 16.1GB. [2024-11-22 23:05:13,690 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 138.4MB. Free memory was 103.7MB in the beginning and 103.5MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:13,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.17ms. Allocated memory is still 192.9MB. Free memory was 163.8MB in the beginning and 155.0MB in the end (delta: 8.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-11-22 23:05:13,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.38ms. Allocated memory is still 192.9MB. Free memory was 155.0MB in the beginning and 154.0MB in the end (delta: 981.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:13,691 INFO L158 Benchmark]: Boogie Preprocessor took 32.14ms. Allocated memory is still 192.9MB. Free memory was 154.0MB in the beginning and 151.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 23:05:13,691 INFO L158 Benchmark]: RCFGBuilder took 297.27ms. Allocated memory is still 192.9MB. Free memory was 151.9MB in the beginning and 139.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 23:05:13,691 INFO L158 Benchmark]: TraceAbstraction took 18360.16ms. Allocated memory was 192.9MB in the beginning and 406.8MB in the end (delta: 213.9MB). Free memory was 138.3MB in the beginning and 133.6MB in the end (delta: 4.8MB). Peak memory consumption was 225.0MB. Max. memory is 16.1GB. [2024-11-22 23:05:13,692 INFO L158 Benchmark]: Witness Printer took 79.95ms. Allocated memory is still 406.8MB. Free memory was 133.6MB in the beginning and 369.5MB in the end (delta: -235.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 23:05:13,694 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 138.4MB. Free memory was 103.7MB in the beginning and 103.5MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.17ms. Allocated memory is still 192.9MB. Free memory was 163.8MB in the beginning and 155.0MB in the end (delta: 8.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.38ms. Allocated memory is still 192.9MB. Free memory was 155.0MB in the beginning and 154.0MB in the end (delta: 981.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.14ms. Allocated memory is still 192.9MB. Free memory was 154.0MB in the beginning and 151.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.27ms. Allocated memory is still 192.9MB. Free memory was 151.9MB in the beginning and 139.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18360.16ms. Allocated memory was 192.9MB in the beginning and 406.8MB in the end (delta: 213.9MB). Free memory was 138.3MB in the beginning and 133.6MB in the end (delta: 4.8MB). Peak memory consumption was 225.0MB. Max. memory is 16.1GB. * Witness Printer took 79.95ms. Allocated memory is still 406.8MB. Free memory was 133.6MB in the beginning and 369.5MB in the end (delta: -235.9MB). Peak memory consumption was 2.1MB. 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, 53 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 28, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1443 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1387 mSDsluCounter, 6426 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5417 mSDsCounter, 391 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5823 IncrementalHoareTripleChecker+Invalid, 6214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 391 mSolverCounterUnsat, 1009 mSDtfsCounter, 5823 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2434 GetRequests, 1921 SyntacticMatches, 68 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4444 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=18, InterpolantAutomatonStates: 334, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 28 MinimizatonAttempts, 309 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 2649 NumberOfCodeBlocks, 2649 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3556 ConstructedInterpolants, 0 QuantifiedInterpolants, 7407 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2398 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 56 InterpolantComputations, 16 PerfectInterpolantSequences, 3084/3920 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 <= 4) Ensures: ((n <= 4) && ((((\result == 0) && (n <= 0)) || (2 < n)) || ((\result == 1) && (1 <= n)))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Requires: ((n < 4) || (5 == n)) Ensures: ((n < 4) || (5 == n)) RESULT: Ultimate proved your program to be correct! [2024-11-22 23:05:13,710 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