./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 21:14:19,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:14:19,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:14:19,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:14:19,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:14:19,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:14:19,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:14:19,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:14:19,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:14:19,415 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:14:19,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:14:19,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:14:19,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:14:19,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:14:19,419 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:14:19,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:14:19,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:14:19,420 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:14:19,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:14:19,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:14:19,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:14:19,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:14:19,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:14:19,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:14:19,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:14:19,426 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:14:19,426 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:14:19,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:14:19,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:14:19,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:14:19,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:14:19,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:14:19,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:14:19,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:14:19,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:14:19,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:14:19,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:14:19,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:14:19,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:14:19,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:14:19,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:14:19,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:14:19,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:14:19,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:14:19,431 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2024-10-11 21:14:19,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:14:19,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:14:19,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:14:19,702 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:14:19,703 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:14:19,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-10-11 21:14:21,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:14:21,274 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:14:21,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-10-11 21:14:21,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d93b5d0ad/e6e59e0b5ebc4f8898f32080f8c7e753/FLAGc9f4a4ef3 [2024-10-11 21:14:21,293 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d93b5d0ad/e6e59e0b5ebc4f8898f32080f8c7e753 [2024-10-11 21:14:21,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:14:21,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:14:21,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:14:21,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:14:21,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:14:21,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b32276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21, skipping insertion in model container [2024-10-11 21:14:21,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:14:21,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:14:21,517 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:14:21,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:14:21,551 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:14:21,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21 WrapperNode [2024-10-11 21:14:21,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:14:21,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:14:21,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:14:21,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:14:21,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,582 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-10-11 21:14:21,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:14:21,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:14:21,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:14:21,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:14:21,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,609 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 21:14:21,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:14:21,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:14:21,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:14:21,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:14:21,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (1/1) ... [2024-10-11 21:14:21,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:14:21,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:21,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:14:21,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:14:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:14:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:14:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:14:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:14:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-10-11 21:14:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-10-11 21:14:21,747 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:14:21,749 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:14:21,845 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-11 21:14:21,845 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:14:21,880 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:14:21,880 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 21:14:21,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:14:21 BoogieIcfgContainer [2024-10-11 21:14:21,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:14:21,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:14:21,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:14:21,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:14:21,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:14:21" (1/3) ... [2024-10-11 21:14:21,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae428f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:14:21, skipping insertion in model container [2024-10-11 21:14:21,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:21" (2/3) ... [2024-10-11 21:14:21,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae428f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:14:21, skipping insertion in model container [2024-10-11 21:14:21,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:14:21" (3/3) ... [2024-10-11 21:14:21,893 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2024-10-11 21:14:21,911 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:14:21,911 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-11 21:14:21,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:14:21,995 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;@5b20636e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:14:21,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 21:14:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 21:14:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 21:14:22,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:22,010 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 21:14:22,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:22,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1905229472, now seen corresponding path program 1 times [2024-10-11 21:14:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498917631] [2024-10-11 21:14:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498917631] [2024-10-11 21:14:22,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498917631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:22,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:22,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 21:14:22,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084667468] [2024-10-11 21:14:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:22,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 21:14:22,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:22,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 21:14:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 21:14:22,261 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:22,339 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-10-11 21:14:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 21:14:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-11 21:14:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:22,349 INFO L225 Difference]: With dead ends: 31 [2024-10-11 21:14:22,350 INFO L226 Difference]: Without dead ends: 23 [2024-10-11 21:14:22,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 21:14:22,356 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:22,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-11 21:14:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-10-11 21:14:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-10-11 21:14:22,397 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 6 [2024-10-11 21:14:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:22,398 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-10-11 21:14:22,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-10-11 21:14:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 21:14:22,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:22,400 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:22,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:14:22,401 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:22,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1067428573, now seen corresponding path program 1 times [2024-10-11 21:14:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545047648] [2024-10-11 21:14:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:22,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:22,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545047648] [2024-10-11 21:14:22,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545047648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:22,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:22,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 21:14:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881692670] [2024-10-11 21:14:22,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:22,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:22,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:22,521 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:22,607 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-10-11 21:14:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:22,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 21:14:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:22,609 INFO L225 Difference]: With dead ends: 23 [2024-10-11 21:14:22,609 INFO L226 Difference]: Without dead ends: 21 [2024-10-11 21:14:22,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:14:22,611 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:22,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-11 21:14:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-11 21:14:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-10-11 21:14:22,627 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2024-10-11 21:14:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:22,628 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-10-11 21:14:22,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-10-11 21:14:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 21:14:22,629 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:22,629 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:22,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:14:22,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:22,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash 803661136, now seen corresponding path program 1 times [2024-10-11 21:14:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:22,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953406278] [2024-10-11 21:14:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-11 21:14:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:14:22,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:22,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953406278] [2024-10-11 21:14:22,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953406278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:22,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:22,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:22,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878481417] [2024-10-11 21:14:22,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:22,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:22,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:22,919 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:22,976 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-10-11 21:14:22,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:22,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-10-11 21:14:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:22,978 INFO L225 Difference]: With dead ends: 33 [2024-10-11 21:14:22,978 INFO L226 Difference]: Without dead ends: 31 [2024-10-11 21:14:22,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:22,980 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:22,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 46 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-11 21:14:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-10-11 21:14:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-11 21:14:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-10-11 21:14:22,997 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2024-10-11 21:14:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:22,998 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-10-11 21:14:22,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-10-11 21:14:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 21:14:23,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:23,002 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:23,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:14:23,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:23,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:23,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1946561503, now seen corresponding path program 1 times [2024-10-11 21:14:23,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:23,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101842609] [2024-10-11 21:14:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:23,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:23,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:23,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-11 21:14:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 21:14:23,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101842609] [2024-10-11 21:14:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101842609] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460751703] [2024-10-11 21:14:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:23,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:23,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:23,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:14:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:23,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:14:23,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:23,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 21:14:23,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460751703] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:23,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:23,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-10-11 21:14:23,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888018605] [2024-10-11 21:14:23,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:23,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 21:14:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 21:14:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:14:23,600 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 19 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:14:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:24,150 INFO L93 Difference]: Finished difference Result 177 states and 257 transitions. [2024-10-11 21:14:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 21:14:24,151 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-10-11 21:14:24,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:24,154 INFO L225 Difference]: With dead ends: 177 [2024-10-11 21:14:24,157 INFO L226 Difference]: Without dead ends: 144 [2024-10-11 21:14:24,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:14:24,160 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 154 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:24,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 301 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:14:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-11 21:14:24,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 128. [2024-10-11 21:14:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 101 states have internal predecessors, (110), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 21 states have call predecessors, (46), 16 states have call successors, (46) [2024-10-11 21:14:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 173 transitions. [2024-10-11 21:14:24,220 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 173 transitions. Word has length 29 [2024-10-11 21:14:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:24,220 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 173 transitions. [2024-10-11 21:14:24,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:14:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 173 transitions. [2024-10-11 21:14:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 21:14:24,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:24,226 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:24,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 21:14:24,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:24,427 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:24,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:24,428 INFO L85 PathProgramCache]: Analyzing trace with hash -239885825, now seen corresponding path program 2 times [2024-10-11 21:14:24,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:24,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670051164] [2024-10-11 21:14:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:24,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 21:14:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 21:14:24,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:24,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670051164] [2024-10-11 21:14:24,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670051164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:24,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109414748] [2024-10-11 21:14:24,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:14:24,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:24,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:24,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:14:24,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:14:24,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:24,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 21:14:24,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 21:14:24,643 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:14:24,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109414748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:24,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:14:24,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 21:14:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447394610] [2024-10-11 21:14:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:24,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:24,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:24,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:14:24,645 INFO L87 Difference]: Start difference. First operand 128 states and 173 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:24,677 INFO L93 Difference]: Finished difference Result 151 states and 209 transitions. [2024-10-11 21:14:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:24,678 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-10-11 21:14:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:24,681 INFO L225 Difference]: With dead ends: 151 [2024-10-11 21:14:24,681 INFO L226 Difference]: Without dead ends: 150 [2024-10-11 21:14:24,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:14:24,682 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:24,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-11 21:14:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2024-10-11 21:14:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 states have internal predecessors, (117), 17 states have call successors, (17), 5 states have call predecessors, (17), 11 states have return successors, (55), 24 states have call predecessors, (55), 16 states have call successors, (55) [2024-10-11 21:14:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2024-10-11 21:14:24,711 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 41 [2024-10-11 21:14:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:24,712 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2024-10-11 21:14:24,712 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2024-10-11 21:14:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-11 21:14:24,713 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:24,714 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:24,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:24,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:24,915 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:24,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1153474090, now seen corresponding path program 1 times [2024-10-11 21:14:24,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:24,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058566047] [2024-10-11 21:14:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 21:14:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 21:14:25,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058566047] [2024-10-11 21:14:25,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058566047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443882327] [2024-10-11 21:14:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:25,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:25,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:25,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:14:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 21:14:25,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 21:14:25,106 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:14:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443882327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:25,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:14:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-10-11 21:14:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831265408] [2024-10-11 21:14:25,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:25,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:14:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:14:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:14:25,108 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:25,161 INFO L93 Difference]: Finished difference Result 205 states and 325 transitions. [2024-10-11 21:14:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:14:25,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-10-11 21:14:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:25,165 INFO L225 Difference]: With dead ends: 205 [2024-10-11 21:14:25,165 INFO L226 Difference]: Without dead ends: 204 [2024-10-11 21:14:25,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:14:25,166 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:25,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:25,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-10-11 21:14:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 152. [2024-10-11 21:14:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.0924369747899159) internal successors, (130), 118 states have internal predecessors, (130), 19 states have call successors, (19), 5 states have call predecessors, (19), 12 states have return successors, (76), 28 states have call predecessors, (76), 18 states have call successors, (76) [2024-10-11 21:14:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2024-10-11 21:14:25,198 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 42 [2024-10-11 21:14:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:25,199 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2024-10-11 21:14:25,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2024-10-11 21:14:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 21:14:25,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:25,201 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:25,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:25,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:25,402 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:25,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1764922049, now seen corresponding path program 1 times [2024-10-11 21:14:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037522200] [2024-10-11 21:14:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 21:14:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-11 21:14:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037522200] [2024-10-11 21:14:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037522200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:25,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:25,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:25,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123233680] [2024-10-11 21:14:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:25,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:25,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:25,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:25,536 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:25,585 INFO L93 Difference]: Finished difference Result 179 states and 269 transitions. [2024-10-11 21:14:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:25,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-10-11 21:14:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:25,587 INFO L225 Difference]: With dead ends: 179 [2024-10-11 21:14:25,589 INFO L226 Difference]: Without dead ends: 178 [2024-10-11 21:14:25,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:25,592 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:25,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 67 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-10-11 21:14:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 163. [2024-10-11 21:14:25,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 128 states have (on average 1.0859375) internal successors, (139), 126 states have internal predecessors, (139), 21 states have call successors, (21), 5 states have call predecessors, (21), 12 states have return successors, (88), 31 states have call predecessors, (88), 20 states have call successors, (88) [2024-10-11 21:14:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2024-10-11 21:14:25,627 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 43 [2024-10-11 21:14:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:25,628 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2024-10-11 21:14:25,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2024-10-11 21:14:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 21:14:25,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:25,634 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:25,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 21:14:25,635 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:25,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -35048812, now seen corresponding path program 1 times [2024-10-11 21:14:25,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:25,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906506532] [2024-10-11 21:14:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 21:14:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-11 21:14:25,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:25,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906506532] [2024-10-11 21:14:25,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906506532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:25,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388932620] [2024-10-11 21:14:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:25,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:25,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:25,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:25,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:14:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 21:14:25,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 46 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:14:25,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 46 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:14:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388932620] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:26,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:26,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2024-10-11 21:14:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103974198] [2024-10-11 21:14:26,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:26,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 21:14:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 21:14:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:14:26,164 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 17 states, 16 states have (on average 3.875) internal successors, (62), 13 states have internal predecessors, (62), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 21:14:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:26,551 INFO L93 Difference]: Finished difference Result 294 states and 466 transitions. [2024-10-11 21:14:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 21:14:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 13 states have internal predecessors, (62), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2024-10-11 21:14:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:26,554 INFO L225 Difference]: With dead ends: 294 [2024-10-11 21:14:26,555 INFO L226 Difference]: Without dead ends: 145 [2024-10-11 21:14:26,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:14:26,558 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 181 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:26,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 83 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:14:26,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-11 21:14:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2024-10-11 21:14:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 97 states have internal predecessors, (102), 16 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (30), 20 states have call predecessors, (30), 15 states have call successors, (30) [2024-10-11 21:14:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2024-10-11 21:14:26,572 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 61 [2024-10-11 21:14:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:26,572 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2024-10-11 21:14:26,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 13 states have internal predecessors, (62), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 21:14:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2024-10-11 21:14:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 21:14:26,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:26,575 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 21:14:26,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 21:14:26,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 21:14:26,776 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:26,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1324927863, now seen corresponding path program 1 times [2024-10-11 21:14:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:26,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317931835] [2024-10-11 21:14:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:26,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:26,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:14:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:26,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:26,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:26,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-11 21:14:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-11 21:14:26,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:26,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317931835] [2024-10-11 21:14:26,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317931835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:26,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875583007] [2024-10-11 21:14:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:26,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:26,940 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:26,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:14:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:26,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 21:14:26,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 21:14:27,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-11 21:14:27,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875583007] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:27,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:27,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-10-11 21:14:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625788664] [2024-10-11 21:14:27,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:27,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 21:14:27,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:27,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 21:14:27,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 21:14:27,243 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 21:14:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:27,321 INFO L93 Difference]: Finished difference Result 125 states and 150 transitions. [2024-10-11 21:14:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:14:27,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2024-10-11 21:14:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:27,323 INFO L225 Difference]: With dead ends: 125 [2024-10-11 21:14:27,323 INFO L226 Difference]: Without dead ends: 124 [2024-10-11 21:14:27,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:14:27,324 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:27,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 114 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-11 21:14:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-10-11 21:14:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 97 states have internal predecessors, (100), 16 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (30), 20 states have call predecessors, (30), 15 states have call successors, (30) [2024-10-11 21:14:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2024-10-11 21:14:27,342 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 56 [2024-10-11 21:14:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:27,343 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2024-10-11 21:14:27,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 21:14:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2024-10-11 21:14:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 21:14:27,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:27,345 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2024-10-11 21:14:27,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 21:14:27,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:27,547 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:27,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1512247762, now seen corresponding path program 2 times [2024-10-11 21:14:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:27,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145254169] [2024-10-11 21:14:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:14:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-11 21:14:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 51 proven. 73 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 21:14:27,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145254169] [2024-10-11 21:14:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145254169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631617387] [2024-10-11 21:14:27,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:14:27,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:27,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:27,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:14:27,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:14:27,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:27,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:14:27,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-11 21:14:27,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-11 21:14:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631617387] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:28,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 5] total 21 [2024-10-11 21:14:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136573554] [2024-10-11 21:14:28,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:28,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 21:14:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 21:14:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:14:28,158 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand has 21 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-11 21:14:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:28,842 INFO L93 Difference]: Finished difference Result 232 states and 285 transitions. [2024-10-11 21:14:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 21:14:28,843 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) Word has length 74 [2024-10-11 21:14:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:28,845 INFO L225 Difference]: With dead ends: 232 [2024-10-11 21:14:28,845 INFO L226 Difference]: Without dead ends: 123 [2024-10-11 21:14:28,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=534, Invalid=1722, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 21:14:28,847 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 169 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:28,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 48 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:14:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-11 21:14:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 80. [2024-10-11 21:14:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.032258064516129) internal successors, (64), 64 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-11 21:14:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-10-11 21:14:28,859 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 74 [2024-10-11 21:14:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:28,860 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-10-11 21:14:28,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-11 21:14:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-10-11 21:14:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-11 21:14:28,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:28,863 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1] [2024-10-11 21:14:28,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 21:14:29,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 21:14:29,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-11 21:14:29,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1077195340, now seen corresponding path program 2 times [2024-10-11 21:14:29,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786299539] [2024-10-11 21:14:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-11 21:14:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-10-11 21:14:29,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786299539] [2024-10-11 21:14:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786299539] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000816112] [2024-10-11 21:14:29,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:14:29,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:29,734 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:29,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 21:14:29,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:14:29,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:29,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 21:14:29,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-10-11 21:14:30,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-10-11 21:14:31,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000816112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:31,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:31,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2024-10-11 21:14:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309997103] [2024-10-11 21:14:31,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:31,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 21:14:31,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 21:14:31,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:14:31,282 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 27 states have internal predecessors, (70), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-10-11 21:14:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:31,341 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-10-11 21:14:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 21:14:31,342 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 27 states have internal predecessors, (70), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 142 [2024-10-11 21:14:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:31,343 INFO L225 Difference]: With dead ends: 80 [2024-10-11 21:14:31,343 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 21:14:31,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 298 SyntacticMatches, 16 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:14:31,344 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:31,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:31,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 21:14:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 21:14:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:31,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 21:14:31,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2024-10-11 21:14:31,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:31,345 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 21:14:31,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 27 states have internal predecessors, (70), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-10-11 21:14:31,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 21:14:31,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 21:14:31,349 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-10-11 21:14:31,349 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-10-11 21:14:31,350 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-10-11 21:14:31,350 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-10-11 21:14:31,350 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-10-11 21:14:31,350 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-10-11 21:14:31,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 21:14:31,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:31,557 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 21:14:31,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 21:14:32,387 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 21:14:32,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-11 21:14:32,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 09:14:32 BoogieIcfgContainer [2024-10-11 21:14:32,419 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 21:14:32,421 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 21:14:32,421 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 21:14:32,421 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 21:14:32,421 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:14:21" (3/4) ... [2024-10-11 21:14:32,423 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 21:14:32,427 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-10-11 21:14:32,431 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-10-11 21:14:32,432 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 21:14:32,432 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 21:14:32,432 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 21:14:32,515 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 21:14:32,516 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 21:14:32,516 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 21:14:32,517 INFO L158 Benchmark]: Toolchain (without parser) took 11215.16ms. Allocated memory was 140.5MB in the beginning and 232.8MB in the end (delta: 92.3MB). Free memory was 87.3MB in the beginning and 100.9MB in the end (delta: -13.6MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2024-10-11 21:14:32,517 INFO L158 Benchmark]: CDTParser took 1.66ms. Allocated memory is still 140.5MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 21:14:32,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.64ms. Allocated memory is still 140.5MB. Free memory was 86.9MB in the beginning and 75.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 21:14:32,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.14ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 73.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 21:14:32,517 INFO L158 Benchmark]: Boogie Preprocessor took 38.10ms. Allocated memory is still 140.5MB. Free memory was 73.6MB in the beginning and 71.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 21:14:32,518 INFO L158 Benchmark]: RCFGBuilder took 259.57ms. Allocated memory is still 140.5MB. Free memory was 71.9MB in the beginning and 60.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 21:14:32,518 INFO L158 Benchmark]: TraceAbstraction took 10534.72ms. Allocated memory was 140.5MB in the beginning and 232.8MB in the end (delta: 92.3MB). Free memory was 60.3MB in the beginning and 106.2MB in the end (delta: -45.8MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2024-10-11 21:14:32,518 INFO L158 Benchmark]: Witness Printer took 95.56ms. Allocated memory is still 232.8MB. Free memory was 105.1MB in the beginning and 100.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 21:14:32,520 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.66ms. Allocated memory is still 140.5MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.64ms. Allocated memory is still 140.5MB. Free memory was 86.9MB in the beginning and 75.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.14ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 73.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.10ms. Allocated memory is still 140.5MB. Free memory was 73.6MB in the beginning and 71.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 259.57ms. Allocated memory is still 140.5MB. Free memory was 71.9MB in the beginning and 60.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10534.72ms. Allocated memory was 140.5MB in the beginning and 232.8MB in the end (delta: 92.3MB). Free memory was 60.3MB in the beginning and 106.2MB in the end (delta: -45.8MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Witness Printer took 95.56ms. Allocated memory is still 232.8MB. Free memory was 105.1MB in the beginning and 100.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 11, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 569 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 555 mSDsluCounter, 985 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 789 mSDsCounter, 176 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1586 IncrementalHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 176 mSolverCounterUnsat, 196 mSDtfsCounter, 1586 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1012 GetRequests, 819 SyntacticMatches, 32 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=7, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 170 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 968 NumberOfCodeBlocks, 968 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1307 ConstructedInterpolants, 0 QuantifiedInterpolants, 2853 SizeOfPredicates, 8 NumberOfNonLiveVariables, 969 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 2823/3550 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 6 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Requires: (n <= 5) Ensures: (n <= 5) RESULT: Ultimate proved your program to be correct! [2024-10-11 21:14:32,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE