./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d19306ce3d42a6a85ce0e73aaa2bade9eaab24620b40f9180d62be222dc7b30 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:07:22,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:07:22,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:07:22,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:07:22,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:07:22,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:07:22,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:07:22,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:07:22,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:07:22,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:07:22,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:07:22,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:07:22,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:07:22,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:07:22,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:07:22,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:07:22,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:07:22,444 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:07:22,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:07:22,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:07:22,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:07:22,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:07:22,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:07:22,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:07:22,450 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:07:22,450 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:07:22,450 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:07:22,450 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:07:22,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:07:22,451 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:07:22,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:07:22,451 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:07:22,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:07:22,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:07:22,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:07:22,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:07:22,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:07:22,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:07:22,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:07:22,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:07:22,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:07:22,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:07:22,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:07:22,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:07:22,455 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d19306ce3d42a6a85ce0e73aaa2bade9eaab24620b40f9180d62be222dc7b30 [2024-11-19 11:07:22,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:07:22,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:07:22,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:07:22,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:07:22,739 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:07:22,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci04.c [2024-11-19 11:07:24,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:07:24,387 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:07:24,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci04.c [2024-11-19 11:07:24,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c2ef7b9/1af5fe3fe6f540c8b0efd93bbe49044b/FLAG13b7c87dd [2024-11-19 11:07:24,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c2ef7b9/1af5fe3fe6f540c8b0efd93bbe49044b [2024-11-19 11:07:24,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:07:24,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:07:24,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:07:24,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:07:24,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:07:24,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:24" (1/1) ... [2024-11-19 11:07:24,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afda6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:24, skipping insertion in model container [2024-11-19 11:07:24,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:24" (1/1) ... [2024-11-19 11:07:24,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:07:24,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:07:24,993 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:07:25,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:07:25,020 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:07:25,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25 WrapperNode [2024-11-19 11:07:25,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:07:25,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:07:25,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:07:25,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:07:25,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,049 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2024-11-19 11:07:25,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:07:25,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:07:25,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:07:25,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:07:25,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,084 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 11:07:25,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:07:25,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:07:25,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:07:25,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:07:25,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (1/1) ... [2024-11-19 11:07:25,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:07:25,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:25,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 11:07:25,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 11:07:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-19 11:07:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-19 11:07:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:07:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:07:25,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:07:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:07:25,256 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:07:25,258 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:07:25,413 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-19 11:07:25,413 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:07:25,431 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:07:25,432 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 11:07:25,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:25 BoogieIcfgContainer [2024-11-19 11:07:25,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:07:25,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:07:25,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:07:25,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:07:25,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:07:24" (1/3) ... [2024-11-19 11:07:25,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c36ade7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:25, skipping insertion in model container [2024-11-19 11:07:25,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:25" (2/3) ... [2024-11-19 11:07:25,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c36ade7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:25, skipping insertion in model container [2024-11-19 11:07:25,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:25" (3/3) ... [2024-11-19 11:07:25,442 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2024-11-19 11:07:25,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:07:25,460 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 11:07:25,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:07:25,524 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;@44eb73d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:07:25,525 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 11:07:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 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) [2024-11-19 11:07:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 11:07:25,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:25,538 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:25,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:25,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2024-11-19 11:07:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:25,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576276003] [2024-11-19 11:07:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:25,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:07:25,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576276003] [2024-11-19 11:07:25,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576276003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:25,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:25,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 11:07:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16807187] [2024-11-19 11:07:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:25,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 11:07:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:25,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 11:07:25,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:07:25,805 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:07:25,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:25,855 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-19 11:07:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 11:07:25,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 11:07:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:25,867 INFO L225 Difference]: With dead ends: 36 [2024-11-19 11:07:25,867 INFO L226 Difference]: Without dead ends: 24 [2024-11-19 11:07:25,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:07:25,873 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:25,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-19 11:07:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-19 11:07:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-19 11:07:25,903 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-19 11:07:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:25,903 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-19 11:07:25,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:07:25,904 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-19 11:07:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 11:07:25,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:25,905 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:25,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:07:25,905 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:25,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2024-11-19 11:07:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:25,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940777610] [2024-11-19 11:07:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:25,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:07:25,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940777610] [2024-11-19 11:07:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940777610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:25,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:25,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:07:25,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813809191] [2024-11-19 11:07:25,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:25,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:25,983 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:07:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:26,071 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-19 11:07:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:26,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 11:07:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:26,074 INFO L225 Difference]: With dead ends: 24 [2024-11-19 11:07:26,074 INFO L226 Difference]: Without dead ends: 22 [2024-11-19 11:07:26,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:07:26,077 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:26,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-19 11:07:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-19 11:07:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-19 11:07:26,089 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-19 11:07:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:26,090 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-19 11:07:26,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:07:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-19 11:07:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 11:07:26,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:26,093 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:26,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:07:26,093 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:26,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2024-11-19 11:07:26,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:26,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204342541] [2024-11-19 11:07:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:26,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:07:26,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:26,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204342541] [2024-11-19 11:07:26,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204342541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:07:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894553267] [2024-11-19 11:07:26,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:26,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:26,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:26,263 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:26,312 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-19 11:07:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:26,312 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 29 [2024-11-19 11:07:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:26,316 INFO L225 Difference]: With dead ends: 34 [2024-11-19 11:07:26,316 INFO L226 Difference]: Without dead ends: 32 [2024-11-19 11:07:26,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:26,317 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 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 [2024-11-19 11:07:26,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:26,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-19 11:07:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-19 11:07:26,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 11:07:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-19 11:07:26,335 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2024-11-19 11:07:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:26,336 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-19 11:07:26,336 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) [2024-11-19 11:07:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-19 11:07:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 11:07:26,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:26,338 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:26,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 11:07:26,338 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:26,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1274820555, now seen corresponding path program 1 times [2024-11-19 11:07:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887119440] [2024-11-19 11:07:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:26,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 11:07:26,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:26,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887119440] [2024-11-19 11:07:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887119440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271514153] [2024-11-19 11:07:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:26,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:26,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:26,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:26,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:07:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:26,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 11:07:26,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 11:07:26,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 11:07:26,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271514153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:26,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:26,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-19 11:07:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97253604] [2024-11-19 11:07:26,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:26,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:07:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:26,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:07:26,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:07:26,861 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:07:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:27,170 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2024-11-19 11:07:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:07:27,171 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2024-11-19 11:07:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:27,172 INFO L225 Difference]: With dead ends: 90 [2024-11-19 11:07:27,174 INFO L226 Difference]: Without dead ends: 64 [2024-11-19 11:07:27,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-19 11:07:27,178 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:27,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 94 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-19 11:07:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2024-11-19 11:07:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-19 11:07:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-11-19 11:07:27,197 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2024-11-19 11:07:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:27,198 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-11-19 11:07:27,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:07:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-11-19 11:07:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 11:07:27,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:27,200 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:27,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:07:27,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:27,405 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:27,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash -254150789, now seen corresponding path program 2 times [2024-11-19 11:07:27,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:27,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009850785] [2024-11-19 11:07:27,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:27,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:27,428 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:27,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 11:07:27,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:27,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009850785] [2024-11-19 11:07:27,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009850785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:27,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645004238] [2024-11-19 11:07:27,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:27,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:27,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:27,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:27,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:07:27,624 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:27,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:27,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 11:07:27,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 11:07:27,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:07:27,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645004238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:27,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:07:27,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-19 11:07:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761151823] [2024-11-19 11:07:27,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:27,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:27,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:07:27,688 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:27,728 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-19 11:07:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:27,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-19 11:07:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:27,730 INFO L225 Difference]: With dead ends: 59 [2024-11-19 11:07:27,732 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 11:07:27,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:07:27,733 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:27,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 11:07:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-19 11:07:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-19 11:07:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-11-19 11:07:27,754 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2024-11-19 11:07:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:27,754 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-11-19 11:07:27,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-11-19 11:07:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 11:07:27,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:27,756 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:27,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:27,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:27,964 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:27,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1092136320, now seen corresponding path program 1 times [2024-11-19 11:07:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394040976] [2024-11-19 11:07:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:07:28,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394040976] [2024-11-19 11:07:28,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394040976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551817182] [2024-11-19 11:07:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:28,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:28,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:28,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:28,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:07:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:28,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 11:07:28,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:07:28,166 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:07:28,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551817182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:28,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:07:28,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-19 11:07:28,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791046620] [2024-11-19 11:07:28,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:28,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:07:28,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:07:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:07:28,169 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-19 11:07:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:28,215 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2024-11-19 11:07:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:07:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 31 [2024-11-19 11:07:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:28,219 INFO L225 Difference]: With dead ends: 81 [2024-11-19 11:07:28,220 INFO L226 Difference]: Without dead ends: 80 [2024-11-19 11:07:28,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:07:28,221 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:28,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-19 11:07:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2024-11-19 11:07:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2024-11-19 11:07:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2024-11-19 11:07:28,250 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2024-11-19 11:07:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:28,251 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2024-11-19 11:07:28,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-19 11:07:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2024-11-19 11:07:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 11:07:28,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:28,255 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:28,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 11:07:28,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:28,456 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:28,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash -940023341, now seen corresponding path program 1 times [2024-11-19 11:07:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:28,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507086376] [2024-11-19 11:07:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:28,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-19 11:07:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507086376] [2024-11-19 11:07:28,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507086376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313584327] [2024-11-19 11:07:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:28,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:28,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:28,636 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:28,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:07:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:28,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 11:07:28,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-19 11:07:28,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 11:07:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313584327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:28,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:28,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-19 11:07:28,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911038257] [2024-11-19 11:07:28,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:28,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:07:28,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:28,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:07:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-19 11:07:28,969 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-19 11:07:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:29,173 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2024-11-19 11:07:29,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:07:29,175 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2024-11-19 11:07:29,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:29,178 INFO L225 Difference]: With dead ends: 140 [2024-11-19 11:07:29,178 INFO L226 Difference]: Without dead ends: 138 [2024-11-19 11:07:29,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:07:29,182 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:29,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 185 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:29,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-19 11:07:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2024-11-19 11:07:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.08) internal successors, (81), 74 states have internal predecessors, (81), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2024-11-19 11:07:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2024-11-19 11:07:29,212 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 51 [2024-11-19 11:07:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:29,213 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2024-11-19 11:07:29,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-19 11:07:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2024-11-19 11:07:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-19 11:07:29,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:29,219 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2024-11-19 11:07:29,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 11:07:29,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:29,420 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:29,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1245504788, now seen corresponding path program 1 times [2024-11-19 11:07:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786520695] [2024-11-19 11:07:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:29,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 38 proven. 80 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-19 11:07:29,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:29,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786520695] [2024-11-19 11:07:29,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786520695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139348933] [2024-11-19 11:07:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:29,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:29,631 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:29,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:07:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:29,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 11:07:29,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 50 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-19 11:07:29,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 50 proven. 87 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-19 11:07:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139348933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:30,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:30,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2024-11-19 11:07:30,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830406795] [2024-11-19 11:07:30,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:30,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:07:30,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:30,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:07:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-19 11:07:30,138 INFO L87 Difference]: Start difference. First operand 97 states and 158 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-19 11:07:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:30,322 INFO L93 Difference]: Finished difference Result 173 states and 298 transitions. [2024-11-19 11:07:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:07:30,325 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 81 [2024-11-19 11:07:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:30,326 INFO L225 Difference]: With dead ends: 173 [2024-11-19 11:07:30,326 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 11:07:30,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 155 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-19 11:07:30,330 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 103 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:30,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 69 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 11:07:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2024-11-19 11:07:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 52 states have internal predecessors, (60), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (26), 12 states have call predecessors, (26), 6 states have call successors, (26) [2024-11-19 11:07:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-11-19 11:07:30,348 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 81 [2024-11-19 11:07:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:30,349 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-11-19 11:07:30,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-19 11:07:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-11-19 11:07:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-19 11:07:30,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:30,351 INFO L215 NwaCegarLoop]: trace histogram [19, 17, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 4, 1, 1, 1, 1] [2024-11-19 11:07:30,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:30,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:30,551 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:30,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash 683104460, now seen corresponding path program 2 times [2024-11-19 11:07:30,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:30,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981996532] [2024-11-19 11:07:30,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:30,578 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:30,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 94 proven. 278 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-19 11:07:30,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:30,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981996532] [2024-11-19 11:07:30,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981996532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:30,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490272257] [2024-11-19 11:07:30,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:30,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:30,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:30,772 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:30,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 11:07:30,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:30,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:30,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 11:07:30,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 449 proven. 15 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2024-11-19 11:07:30,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 95 proven. 328 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-19 11:07:31,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490272257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:31,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:31,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-19 11:07:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669632261] [2024-11-19 11:07:31,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:31,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 11:07:31,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 11:07:31,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:07:31,248 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-19 11:07:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:31,341 INFO L93 Difference]: Finished difference Result 128 states and 178 transitions. [2024-11-19 11:07:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:07:31,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 174 [2024-11-19 11:07:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:31,343 INFO L225 Difference]: With dead ends: 128 [2024-11-19 11:07:31,343 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 11:07:31,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 340 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-19 11:07:31,345 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:31,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 61 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 11:07:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-19 11:07:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 45 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 10 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-19 11:07:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-11-19 11:07:31,359 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 174 [2024-11-19 11:07:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:31,359 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-11-19 11:07:31,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-19 11:07:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-11-19 11:07:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-19 11:07:31,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:31,361 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1] [2024-11-19 11:07:31,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 11:07:31,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:31,561 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:31,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash -727176579, now seen corresponding path program 3 times [2024-11-19 11:07:31,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:31,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131623179] [2024-11-19 11:07:31,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:31,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:31,581 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 11:07:31,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 100 proven. 25 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-19 11:07:31,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:31,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131623179] [2024-11-19 11:07:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131623179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:31,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930334179] [2024-11-19 11:07:31,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:31,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:31,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:31,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:31,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 11:07:31,851 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 11:07:31,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:31,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 11:07:31,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-19 11:07:31,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-19 11:07:32,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930334179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:32,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2024-11-19 11:07:32,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219446189] [2024-11-19 11:07:32,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:32,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 11:07:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 11:07:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:07:32,345 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-19 11:07:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:32,447 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-11-19 11:07:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:07:32,448 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) Word has length 103 [2024-11-19 11:07:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:32,450 INFO L225 Difference]: With dead ends: 63 [2024-11-19 11:07:32,451 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 11:07:32,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 191 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:07:32,452 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:32,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 226 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 11:07:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2024-11-19 11:07:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-19 11:07:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-19 11:07:32,461 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 103 [2024-11-19 11:07:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:32,462 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-19 11:07:32,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-19 11:07:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-19 11:07:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-19 11:07:32,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:32,463 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1] [2024-11-19 11:07:32,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 11:07:32,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:32,668 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:32,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1067637415, now seen corresponding path program 2 times [2024-11-19 11:07:32,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:32,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690828856] [2024-11-19 11:07:32,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:32,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:32,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 72 proven. 159 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-19 11:07:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690828856] [2024-11-19 11:07:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690828856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592728439] [2024-11-19 11:07:32,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:32,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:32,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:32,898 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:32,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 11:07:32,955 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:32,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:32,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 11:07:32,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 158 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-19 11:07:33,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 174 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-19 11:07:33,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592728439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:33,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:33,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-19 11:07:33,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933503049] [2024-11-19 11:07:33,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:33,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 11:07:33,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:33,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 11:07:33,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:07:33,659 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-19 11:07:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:33,915 INFO L93 Difference]: Finished difference Result 133 states and 168 transitions. [2024-11-19 11:07:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:07:33,916 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 104 [2024-11-19 11:07:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:33,917 INFO L225 Difference]: With dead ends: 133 [2024-11-19 11:07:33,917 INFO L226 Difference]: Without dead ends: 83 [2024-11-19 11:07:33,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 200 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-19 11:07:33,919 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 179 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:33,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 80 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-19 11:07:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2024-11-19 11:07:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 56 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (17), 11 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-19 11:07:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-19 11:07:33,926 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 104 [2024-11-19 11:07:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:33,926 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-19 11:07:33,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-19 11:07:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-19 11:07:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 11:07:33,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:33,927 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2024-11-19 11:07:33,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 11:07:34,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 11:07:34,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:34,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1338589868, now seen corresponding path program 3 times [2024-11-19 11:07:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:34,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173920659] [2024-11-19 11:07:34,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:34,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:34,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 11:07:34,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-19 11:07:34,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:34,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173920659] [2024-11-19 11:07:34,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173920659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:34,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350927265] [2024-11-19 11:07:34,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:34,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:34,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:34,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 11:07:34,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 11:07:34,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:34,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 11:07:34,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 20 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-19 11:07:34,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 95 proven. 36 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-19 11:07:34,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350927265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:34,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:34,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 15 [2024-11-19 11:07:34,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069256467] [2024-11-19 11:07:34,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:34,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:07:34,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:07:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:07:34,712 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-19 11:07:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:34,858 INFO L93 Difference]: Finished difference Result 132 states and 162 transitions. [2024-11-19 11:07:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:07:34,858 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 85 [2024-11-19 11:07:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:34,859 INFO L225 Difference]: With dead ends: 132 [2024-11-19 11:07:34,859 INFO L226 Difference]: Without dead ends: 64 [2024-11-19 11:07:34,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:07:34,861 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:34,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 91 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-19 11:07:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-19 11:07:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 49 states have internal predecessors, (54), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-19 11:07:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-11-19 11:07:34,872 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 85 [2024-11-19 11:07:34,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:34,872 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-11-19 11:07:34,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-19 11:07:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-11-19 11:07:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-19 11:07:34,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:34,875 INFO L215 NwaCegarLoop]: trace histogram [16, 14, 13, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2024-11-19 11:07:34,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 11:07:35,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:35,076 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:35,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1466591626, now seen corresponding path program 4 times [2024-11-19 11:07:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:35,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48046136] [2024-11-19 11:07:35,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:35,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:35,102 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:35,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-19 11:07:35,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:35,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48046136] [2024-11-19 11:07:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48046136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739549756] [2024-11-19 11:07:35,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:35,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:35,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:35,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:35,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 11:07:35,688 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:35,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:35,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 11:07:35,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-19 11:07:35,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-11-19 11:07:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739549756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:36,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2024-11-19 11:07:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087581817] [2024-11-19 11:07:36,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:36,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 11:07:36,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 11:07:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-19 11:07:36,989 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 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) [2024-11-19 11:07:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:37,232 INFO L93 Difference]: Finished difference Result 128 states and 180 transitions. [2024-11-19 11:07:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 11:07:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 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 149 [2024-11-19 11:07:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:37,234 INFO L225 Difference]: With dead ends: 128 [2024-11-19 11:07:37,234 INFO L226 Difference]: Without dead ends: 127 [2024-11-19 11:07:37,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 284 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=913, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 11:07:37,235 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:37,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 130 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-19 11:07:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 100. [2024-11-19 11:07:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 77 states have internal predecessors, (82), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (47), 16 states have call predecessors, (47), 10 states have call successors, (47) [2024-11-19 11:07:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 140 transitions. [2024-11-19 11:07:37,248 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 140 transitions. Word has length 149 [2024-11-19 11:07:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:37,250 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 140 transitions. [2024-11-19 11:07:37,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 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) [2024-11-19 11:07:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 140 transitions. [2024-11-19 11:07:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-11-19 11:07:37,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:37,257 INFO L215 NwaCegarLoop]: trace histogram [49, 47, 39, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 22, 15, 10, 1, 1, 1, 1] [2024-11-19 11:07:37,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 11:07:37,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 11:07:37,462 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:37,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1286544115, now seen corresponding path program 5 times [2024-11-19 11:07:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773066710] [2024-11-19 11:07:37,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:07:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:37,502 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-19 11:07:37,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7946 backedges. 901 proven. 1251 refuted. 0 times theorem prover too weak. 5794 trivial. 0 not checked. [2024-11-19 11:07:37,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:37,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773066710] [2024-11-19 11:07:37,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773066710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:37,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059613351] [2024-11-19 11:07:37,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:07:37,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:37,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:37,815 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:37,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 11:07:37,942 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-19 11:07:37,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:37,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 11:07:37,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7946 backedges. 905 proven. 1245 refuted. 0 times theorem prover too weak. 5796 trivial. 0 not checked. [2024-11-19 11:07:38,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7946 backedges. 903 proven. 1263 refuted. 0 times theorem prover too weak. 5780 trivial. 0 not checked. [2024-11-19 11:07:39,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059613351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:39,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:39,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 16] total 22 [2024-11-19 11:07:39,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072074423] [2024-11-19 11:07:39,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:39,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 11:07:39,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 11:07:39,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:07:39,161 INFO L87 Difference]: Start difference. First operand 100 states and 140 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-19 11:07:39,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:39,454 INFO L93 Difference]: Finished difference Result 220 states and 333 transitions. [2024-11-19 11:07:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:07:39,455 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) Word has length 471 [2024-11-19 11:07:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:39,457 INFO L225 Difference]: With dead ends: 220 [2024-11-19 11:07:39,457 INFO L226 Difference]: Without dead ends: 125 [2024-11-19 11:07:39,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 932 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=892, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 11:07:39,459 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 113 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:39,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 99 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-19 11:07:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2024-11-19 11:07:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 84 states have internal predecessors, (91), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (44), 16 states have call predecessors, (44), 11 states have call successors, (44) [2024-11-19 11:07:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2024-11-19 11:07:39,471 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 471 [2024-11-19 11:07:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:39,471 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2024-11-19 11:07:39,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-19 11:07:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2024-11-19 11:07:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-19 11:07:39,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:39,474 INFO L215 NwaCegarLoop]: trace histogram [28, 26, 22, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 8, 6, 1, 1, 1, 1] [2024-11-19 11:07:39,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 11:07:39,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 11:07:39,675 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:39,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2102209472, now seen corresponding path program 6 times [2024-11-19 11:07:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705797318] [2024-11-19 11:07:39,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 11:07:39,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:39,706 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-19 11:07:39,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2456 backedges. 278 proven. 642 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2024-11-19 11:07:39,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705797318] [2024-11-19 11:07:39,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705797318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:39,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448904714] [2024-11-19 11:07:39,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 11:07:39,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:39,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:39,890 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:39,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 11:07:40,021 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-19 11:07:40,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:40,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 11:07:40,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2456 backedges. 1460 proven. 135 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-11-19 11:07:40,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2456 backedges. 282 proven. 646 refuted. 0 times theorem prover too weak. 1528 trivial. 0 not checked. [2024-11-19 11:07:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448904714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:40,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 15 [2024-11-19 11:07:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113410695] [2024-11-19 11:07:40,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:40,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:07:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:07:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:07:40,788 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 9 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-19 11:07:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:40,974 INFO L93 Difference]: Finished difference Result 226 states and 322 transitions. [2024-11-19 11:07:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:07:40,975 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 9 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) Word has length 266 [2024-11-19 11:07:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:40,977 INFO L225 Difference]: With dead ends: 226 [2024-11-19 11:07:40,977 INFO L226 Difference]: Without dead ends: 116 [2024-11-19 11:07:40,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 525 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:07:40,979 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 51 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:40,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 126 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-19 11:07:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2024-11-19 11:07:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 83 states have internal predecessors, (88), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (35), 14 states have call predecessors, (35), 12 states have call successors, (35) [2024-11-19 11:07:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2024-11-19 11:07:40,991 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 266 [2024-11-19 11:07:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:40,991 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2024-11-19 11:07:40,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 9 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-19 11:07:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2024-11-19 11:07:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-19 11:07:40,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:40,997 INFO L215 NwaCegarLoop]: trace histogram [48, 45, 39, 24, 24, 24, 24, 23, 23, 23, 23, 23, 22, 22, 22, 21, 15, 9, 1, 1, 1, 1] [2024-11-19 11:07:41,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:41,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 11:07:41,198 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:41,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -817115017, now seen corresponding path program 7 times [2024-11-19 11:07:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729020296] [2024-11-19 11:07:41,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 11:07:41,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 596 proven. 2001 refuted. 0 times theorem prover too weak. 4913 trivial. 0 not checked. [2024-11-19 11:07:41,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:41,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729020296] [2024-11-19 11:07:41,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729020296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:41,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400359945] [2024-11-19 11:07:41,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 11:07:41,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:41,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:41,842 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:41,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 11:07:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:42,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 11:07:42,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 3970 proven. 1245 refuted. 0 times theorem prover too weak. 2295 trivial. 0 not checked. [2024-11-19 11:07:42,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 706 proven. 2493 refuted. 0 times theorem prover too weak. 4311 trivial. 0 not checked. [2024-11-19 11:07:43,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400359945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:43,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 22] total 27 [2024-11-19 11:07:43,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485574518] [2024-11-19 11:07:43,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:43,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 11:07:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:43,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 11:07:43,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2024-11-19 11:07:43,588 INFO L87 Difference]: Start difference. First operand 106 states and 136 transitions. Second operand has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-19 11:07:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:44,015 INFO L93 Difference]: Finished difference Result 250 states and 345 transitions. [2024-11-19 11:07:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 11:07:44,016 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) Word has length 458 [2024-11-19 11:07:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:44,018 INFO L225 Difference]: With dead ends: 250 [2024-11-19 11:07:44,018 INFO L226 Difference]: Without dead ends: 149 [2024-11-19 11:07:44,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 901 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 11:07:44,020 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 298 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:44,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 132 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:44,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-19 11:07:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 127. [2024-11-19 11:07:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 99 states have internal predecessors, (108), 15 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (37), 17 states have call predecessors, (37), 14 states have call successors, (37) [2024-11-19 11:07:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 160 transitions. [2024-11-19 11:07:44,030 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 160 transitions. Word has length 458 [2024-11-19 11:07:44,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:44,031 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 160 transitions. [2024-11-19 11:07:44,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-19 11:07:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 160 transitions. [2024-11-19 11:07:44,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-19 11:07:44,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:44,035 INFO L215 NwaCegarLoop]: trace histogram [32, 30, 26, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1] [2024-11-19 11:07:44,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 11:07:44,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 11:07:44,236 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:44,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash -303289904, now seen corresponding path program 8 times [2024-11-19 11:07:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:44,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841890722] [2024-11-19 11:07:44,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:44,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:44,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 554 proven. 990 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2024-11-19 11:07:44,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841890722] [2024-11-19 11:07:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841890722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746496649] [2024-11-19 11:07:44,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:44,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:44,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:44,658 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:44,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 11:07:44,799 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:44,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:44,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 11:07:44,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1858 proven. 484 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2024-11-19 11:07:44,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 551 proven. 1101 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2024-11-19 11:07:46,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746496649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:46,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:46,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2024-11-19 11:07:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652742012] [2024-11-19 11:07:46,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:46,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 11:07:46,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 11:07:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-19 11:07:46,207 INFO L87 Difference]: Start difference. First operand 127 states and 160 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-19 11:07:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:46,462 INFO L93 Difference]: Finished difference Result 240 states and 316 transitions. [2024-11-19 11:07:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:07:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) Word has length 306 [2024-11-19 11:07:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:46,465 INFO L225 Difference]: With dead ends: 240 [2024-11-19 11:07:46,465 INFO L226 Difference]: Without dead ends: 118 [2024-11-19 11:07:46,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 599 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 11:07:46,467 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 82 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:46,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 151 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-19 11:07:46,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2024-11-19 11:07:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.035294117647059) internal successors, (88), 83 states have internal predecessors, (88), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-19 11:07:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2024-11-19 11:07:46,476 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 306 [2024-11-19 11:07:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:46,478 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2024-11-19 11:07:46,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-19 11:07:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2024-11-19 11:07:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2024-11-19 11:07:46,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:46,505 INFO L215 NwaCegarLoop]: trace histogram [69, 65, 56, 35, 35, 35, 35, 33, 33, 33, 33, 33, 32, 32, 32, 31, 21, 13, 1, 1, 1, 1] [2024-11-19 11:07:46,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 11:07:46,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:46,706 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:46,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash 478188280, now seen corresponding path program 9 times [2024-11-19 11:07:46,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:46,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848513647] [2024-11-19 11:07:46,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:46,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:46,814 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-11-19 11:07:46,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 4590 proven. 1470 refuted. 0 times theorem prover too weak. 9717 trivial. 0 not checked. [2024-11-19 11:07:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848513647] [2024-11-19 11:07:49,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848513647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344632780] [2024-11-19 11:07:49,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:49,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:49,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:49,071 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:49,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 11:07:49,280 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-11-19 11:07:49,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:49,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-19 11:07:49,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 4580 proven. 1112 refuted. 0 times theorem prover too weak. 10085 trivial. 0 not checked. [2024-11-19 11:07:49,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 4909 proven. 1015 refuted. 0 times theorem prover too weak. 9853 trivial. 0 not checked. [2024-11-19 11:07:56,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344632780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:56,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:56,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2024-11-19 11:07:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952973159] [2024-11-19 11:07:56,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:56,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 11:07:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 11:07:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 11:07:56,005 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 46 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 46 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (33), 32 states have call predecessors, (33), 12 states have call successors, (33) [2024-11-19 11:07:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:56,323 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2024-11-19 11:07:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 11:07:56,324 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 46 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (33), 32 states have call predecessors, (33), 12 states have call successors, (33) Word has length 660 [2024-11-19 11:07:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:56,326 INFO L225 Difference]: With dead ends: 170 [2024-11-19 11:07:56,326 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 11:07:56,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1408 GetRequests, 1304 SyntacticMatches, 51 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2580 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=654, Invalid=2316, Unknown=0, NotChecked=0, Total=2970 [2024-11-19 11:07:56,327 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:56,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 233 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 11:07:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 142. [2024-11-19 11:07:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 111 states have internal predecessors, (116), 17 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (70), 20 states have call predecessors, (70), 16 states have call successors, (70) [2024-11-19 11:07:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2024-11-19 11:07:56,339 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 660 [2024-11-19 11:07:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:56,340 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2024-11-19 11:07:56,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 46 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (33), 32 states have call predecessors, (33), 12 states have call successors, (33) [2024-11-19 11:07:56,341 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2024-11-19 11:07:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1269 [2024-11-19 11:07:56,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:56,351 INFO L215 NwaCegarLoop]: trace histogram [131, 127, 106, 66, 66, 66, 66, 64, 64, 64, 64, 64, 63, 63, 63, 62, 40, 25, 1, 1, 1, 1] [2024-11-19 11:07:56,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 11:07:56,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 11:07:56,552 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:56,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -786736285, now seen corresponding path program 10 times [2024-11-19 11:07:56,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34639160] [2024-11-19 11:07:56,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:56,646 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:56,647 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 58955 backedges. 1389 proven. 7710 refuted. 0 times theorem prover too weak. 49856 trivial. 0 not checked. [2024-11-19 11:07:57,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:57,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34639160] [2024-11-19 11:07:57,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34639160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:57,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720428793] [2024-11-19 11:07:57,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:57,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:57,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:57,433 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:57,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 11:07:57,791 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:57,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:57,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 11:07:57,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 58955 backedges. 29737 proven. 2740 refuted. 0 times theorem prover too weak. 26478 trivial. 0 not checked. [2024-11-19 11:07:57,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 58955 backedges. 1379 proven. 9778 refuted. 0 times theorem prover too weak. 47798 trivial. 0 not checked. [2024-11-19 11:08:00,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720428793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:00,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:00,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 24] total 29 [2024-11-19 11:08:00,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131246756] [2024-11-19 11:08:00,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:00,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 11:08:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 11:08:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-19 11:08:00,444 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 24 states have call successors, (31), 5 states have call predecessors, (31), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-19 11:08:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:00,860 INFO L93 Difference]: Finished difference Result 346 states and 571 transitions. [2024-11-19 11:08:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 11:08:00,861 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 24 states have call successors, (31), 5 states have call predecessors, (31), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) Word has length 1268 [2024-11-19 11:08:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:00,863 INFO L225 Difference]: With dead ends: 346 [2024-11-19 11:08:00,863 INFO L226 Difference]: Without dead ends: 209 [2024-11-19 11:08:00,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2586 GetRequests, 2519 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=752, Invalid=2004, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 11:08:00,867 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 244 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:00,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 141 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:08:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-19 11:08:00,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 193. [2024-11-19 11:08:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 155 states have (on average 1.032258064516129) internal successors, (160), 151 states have internal predecessors, (160), 23 states have call successors, (23), 14 states have call predecessors, (23), 14 states have return successors, (90), 27 states have call predecessors, (90), 22 states have call successors, (90) [2024-11-19 11:08:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 273 transitions. [2024-11-19 11:08:00,882 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 273 transitions. Word has length 1268 [2024-11-19 11:08:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:00,883 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 273 transitions. [2024-11-19 11:08:00,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 24 states have call successors, (31), 5 states have call predecessors, (31), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-19 11:08:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 273 transitions. [2024-11-19 11:08:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1263 [2024-11-19 11:08:00,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:00,894 INFO L215 NwaCegarLoop]: trace histogram [130, 127, 105, 65, 65, 65, 65, 64, 64, 64, 64, 64, 63, 63, 63, 62, 40, 25, 1, 1, 1, 1] [2024-11-19 11:08:00,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 11:08:01,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:01,095 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:08:01,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1167236328, now seen corresponding path program 11 times [2024-11-19 11:08:01,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925792371] [2024-11-19 11:08:01,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:08:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:01,239 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 62 check-sat command(s) [2024-11-19 11:08:01,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 58395 backedges. 5466 proven. 4064 refuted. 0 times theorem prover too weak. 48865 trivial. 0 not checked. [2024-11-19 11:08:01,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:08:01,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925792371] [2024-11-19 11:08:01,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925792371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:08:01,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075351911] [2024-11-19 11:08:01,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:08:01,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:01,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:08:01,999 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:08:02,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 11:08:02,434 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 62 check-sat command(s) [2024-11-19 11:08:02,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:02,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 11:08:02,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:08:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 58395 backedges. 30089 proven. 1171 refuted. 0 times theorem prover too weak. 27135 trivial. 0 not checked. [2024-11-19 11:08:02,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 58395 backedges. 5662 proven. 4356 refuted. 0 times theorem prover too weak. 48377 trivial. 0 not checked. [2024-11-19 11:08:05,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075351911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:05,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:05,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 26 [2024-11-19 11:08:05,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815667716] [2024-11-19 11:08:05,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:05,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 11:08:05,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 11:08:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2024-11-19 11:08:05,756 INFO L87 Difference]: Start difference. First operand 193 states and 273 transitions. Second operand has 26 states, 26 states have (on average 5.730769230769231) internal successors, (149), 26 states have internal predecessors, (149), 19 states have call successors, (26), 2 states have call predecessors, (26), 11 states have return successors, (32), 13 states have call predecessors, (32), 19 states have call successors, (32) [2024-11-19 11:08:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:06,105 INFO L93 Difference]: Finished difference Result 357 states and 540 transitions. [2024-11-19 11:08:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 11:08:06,106 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.730769230769231) internal successors, (149), 26 states have internal predecessors, (149), 19 states have call successors, (26), 2 states have call predecessors, (26), 11 states have return successors, (32), 13 states have call predecessors, (32), 19 states have call successors, (32) Word has length 1262 [2024-11-19 11:08:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:06,108 INFO L225 Difference]: With dead ends: 357 [2024-11-19 11:08:06,108 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 11:08:06,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2561 GetRequests, 2510 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=487, Invalid=1319, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 11:08:06,112 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 63 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:06,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 206 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:08:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 11:08:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 145. [2024-11-19 11:08:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 114 states have internal predecessors, (119), 18 states have call successors, (18), 12 states have call predecessors, (18), 10 states have return successors, (55), 18 states have call predecessors, (55), 17 states have call successors, (55) [2024-11-19 11:08:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2024-11-19 11:08:06,132 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 1262 [2024-11-19 11:08:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:06,133 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2024-11-19 11:08:06,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.730769230769231) internal successors, (149), 26 states have internal predecessors, (149), 19 states have call successors, (26), 2 states have call predecessors, (26), 11 states have return successors, (32), 13 states have call predecessors, (32), 19 states have call successors, (32) [2024-11-19 11:08:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2024-11-19 11:08:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2024-11-19 11:08:06,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:06,138 INFO L215 NwaCegarLoop]: trace histogram [84, 82, 68, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1] [2024-11-19 11:08:06,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 11:08:06,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:06,339 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:08:06,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1313463014, now seen corresponding path program 12 times [2024-11-19 11:08:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:06,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900863911] [2024-11-19 11:08:06,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 11:08:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:06,463 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-11-19 11:08:06,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3204 proven. 2233 refuted. 0 times theorem prover too weak. 18778 trivial. 0 not checked. [2024-11-19 11:08:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:08:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900863911] [2024-11-19 11:08:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900863911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:08:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875999339] [2024-11-19 11:08:07,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 11:08:07,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:07,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:08:07,314 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:08:07,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 11:08:07,733 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-11-19 11:08:07,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:07,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 11:08:07,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:08:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3188 proven. 2246 refuted. 0 times theorem prover too weak. 18781 trivial. 0 not checked. [2024-11-19 11:08:07,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3196 proven. 2310 refuted. 0 times theorem prover too weak. 18709 trivial. 0 not checked. [2024-11-19 11:08:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875999339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:09,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:09,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 25 [2024-11-19 11:08:09,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047389989] [2024-11-19 11:08:09,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:09,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 11:08:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:09,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 11:08:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-11-19 11:08:09,568 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 25 states, 25 states have (on average 5.4) internal successors, (135), 25 states have internal predecessors, (135), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-19 11:08:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:10,052 INFO L93 Difference]: Finished difference Result 401 states and 554 transitions. [2024-11-19 11:08:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 11:08:10,053 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.4) internal successors, (135), 25 states have internal predecessors, (135), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) Word has length 816 [2024-11-19 11:08:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:10,056 INFO L225 Difference]: With dead ends: 401 [2024-11-19 11:08:10,056 INFO L226 Difference]: Without dead ends: 243 [2024-11-19 11:08:10,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1682 GetRequests, 1622 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=699, Invalid=1953, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 11:08:10,060 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 195 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:10,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 178 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:08:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-19 11:08:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 184. [2024-11-19 11:08:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 145 states have internal predecessors, (154), 23 states have call successors, (23), 17 states have call predecessors, (23), 11 states have return successors, (64), 21 states have call predecessors, (64), 22 states have call successors, (64) [2024-11-19 11:08:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 241 transitions. [2024-11-19 11:08:10,076 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 241 transitions. Word has length 816 [2024-11-19 11:08:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:10,077 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 241 transitions. [2024-11-19 11:08:10,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.4) internal successors, (135), 25 states have internal predecessors, (135), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-19 11:08:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 241 transitions. [2024-11-19 11:08:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2024-11-19 11:08:10,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:10,082 INFO L215 NwaCegarLoop]: trace histogram [83, 82, 67, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1] [2024-11-19 11:08:10,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 11:08:10,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:10,283 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:08:10,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:10,283 INFO L85 PathProgramCache]: Analyzing trace with hash -975339641, now seen corresponding path program 13 times [2024-11-19 11:08:10,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137742501] [2024-11-19 11:08:10,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 11:08:10,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:08:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 2257 proven. 4945 refuted. 0 times theorem prover too weak. 16657 trivial. 0 not checked. [2024-11-19 11:08:11,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:08:11,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137742501] [2024-11-19 11:08:11,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137742501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:08:11,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536141265] [2024-11-19 11:08:11,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 11:08:11,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:11,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:08:11,280 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:08:11,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 11:08:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:08:11,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 11:08:11,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:08:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 12210 proven. 2667 refuted. 0 times theorem prover too weak. 8982 trivial. 0 not checked. [2024-11-19 11:08:11,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 2246 proven. 5308 refuted. 0 times theorem prover too weak. 16305 trivial. 0 not checked. [2024-11-19 11:08:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536141265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:14,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 32 [2024-11-19 11:08:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585596082] [2024-11-19 11:08:14,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:14,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 11:08:14,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 11:08:14,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2024-11-19 11:08:14,887 INFO L87 Difference]: Start difference. First operand 184 states and 241 transitions. Second operand has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-19 11:08:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:15,324 INFO L93 Difference]: Finished difference Result 369 states and 501 transitions. [2024-11-19 11:08:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 11:08:15,325 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) Word has length 810 [2024-11-19 11:08:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:15,328 INFO L225 Difference]: With dead ends: 369 [2024-11-19 11:08:15,328 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 11:08:15,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1603 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 11:08:15,330 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 273 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:15,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 281 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:08:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 11:08:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 175. [2024-11-19 11:08:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 142 states have (on average 1.028169014084507) internal successors, (146), 139 states have internal predecessors, (146), 23 states have call successors, (23), 19 states have call predecessors, (23), 9 states have return successors, (49), 16 states have call predecessors, (49), 22 states have call successors, (49) [2024-11-19 11:08:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 218 transitions. [2024-11-19 11:08:15,344 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 218 transitions. Word has length 810 [2024-11-19 11:08:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:15,345 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 218 transitions. [2024-11-19 11:08:15,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-19 11:08:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 218 transitions. [2024-11-19 11:08:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1983 [2024-11-19 11:08:15,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:15,398 INFO L215 NwaCegarLoop]: trace histogram [203, 201, 164, 101, 101, 101, 101, 101, 101, 101, 101, 101, 100, 100, 100, 99, 63, 39, 1, 1, 1, 1] [2024-11-19 11:08:15,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-19 11:08:15,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:15,600 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:08:15,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash 80907614, now seen corresponding path program 14 times [2024-11-19 11:08:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:15,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013621555] [2024-11-19 11:08:15,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:08:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:15,918 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:08:15,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 144772 backedges. 4660 proven. 17894 refuted. 0 times theorem prover too weak. 122218 trivial. 0 not checked. [2024-11-19 11:08:18,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:08:18,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013621555] [2024-11-19 11:08:18,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013621555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:08:18,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330658639] [2024-11-19 11:08:18,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:08:18,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:18,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:08:18,864 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:08:18,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 11:08:19,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:08:19,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:19,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 3682 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 11:08:19,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:08:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 144772 backedges. 69738 proven. 11034 refuted. 0 times theorem prover too weak. 64000 trivial. 0 not checked. [2024-11-19 11:08:19,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 144772 backedges. 5607 proven. 20230 refuted. 0 times theorem prover too weak. 118935 trivial. 0 not checked. [2024-11-19 11:08:25,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330658639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:25,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:25,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 34] total 39 [2024-11-19 11:08:25,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653519902] [2024-11-19 11:08:25,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:25,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-19 11:08:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-19 11:08:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 11:08:25,148 INFO L87 Difference]: Start difference. First operand 175 states and 218 transitions. Second operand has 39 states, 39 states have (on average 6.0) internal successors, (234), 39 states have internal predecessors, (234), 34 states have call successors, (41), 3 states have call predecessors, (41), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-19 11:08:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:26,035 INFO L93 Difference]: Finished difference Result 400 states and 544 transitions. [2024-11-19 11:08:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-19 11:08:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.0) internal successors, (234), 39 states have internal predecessors, (234), 34 states have call successors, (41), 3 states have call predecessors, (41), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) Word has length 1982 [2024-11-19 11:08:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:26,039 INFO L225 Difference]: With dead ends: 400 [2024-11-19 11:08:26,039 INFO L226 Difference]: Without dead ends: 230 [2024-11-19 11:08:26,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4040 GetRequests, 3943 SyntacticMatches, 18 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1534, Invalid=4946, Unknown=0, NotChecked=0, Total=6480 [2024-11-19 11:08:26,043 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 705 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:26,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 255 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:08:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-19 11:08:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 190. [2024-11-19 11:08:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 151 states have internal predecessors, (159), 25 states have call successors, (25), 20 states have call predecessors, (25), 10 states have return successors, (63), 18 states have call predecessors, (63), 24 states have call successors, (63) [2024-11-19 11:08:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2024-11-19 11:08:26,057 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 1982 [2024-11-19 11:08:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:26,058 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2024-11-19 11:08:26,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.0) internal successors, (234), 39 states have internal predecessors, (234), 34 states have call successors, (41), 3 states have call predecessors, (41), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-19 11:08:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2024-11-19 11:08:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2024-11-19 11:08:26,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:26,064 INFO L215 NwaCegarLoop]: trace histogram [94, 92, 76, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 29, 18, 1, 1, 1, 1] [2024-11-19 11:08:26,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 11:08:26,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 11:08:26,265 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:08:26,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash -501661377, now seen corresponding path program 15 times [2024-11-19 11:08:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:26,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378372886] [2024-11-19 11:08:26,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:08:26,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:26,329 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2024-11-19 11:08:26,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 4481 proven. 1382 refuted. 0 times theorem prover too weak. 24589 trivial. 0 not checked. [2024-11-19 11:08:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:08:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378372886] [2024-11-19 11:08:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378372886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:08:26,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151713865] [2024-11-19 11:08:26,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:08:26,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:08:26,865 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:08:26,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 11:08:27,371 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2024-11-19 11:08:27,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:27,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 11:08:27,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:08:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 4680 proven. 1482 refuted. 0 times theorem prover too weak. 24290 trivial. 0 not checked. [2024-11-19 11:08:27,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 4688 proven. 1545 refuted. 0 times theorem prover too weak. 24219 trivial. 0 not checked. [2024-11-19 11:08:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151713865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:29,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:29,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 26 [2024-11-19 11:08:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381292378] [2024-11-19 11:08:29,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:29,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 11:08:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 11:08:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2024-11-19 11:08:29,439 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 states have internal predecessors, (140), 14 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) [2024-11-19 11:08:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:29,901 INFO L93 Difference]: Finished difference Result 421 states and 551 transitions. [2024-11-19 11:08:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 11:08:29,902 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 states have internal predecessors, (140), 14 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) Word has length 914 [2024-11-19 11:08:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:29,906 INFO L225 Difference]: With dead ends: 421 [2024-11-19 11:08:29,906 INFO L226 Difference]: Without dead ends: 216 [2024-11-19 11:08:29,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1869 GetRequests, 1814 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=578, Invalid=1584, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 11:08:29,909 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 106 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:29,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 174 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:08:29,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-19 11:08:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 187. [2024-11-19 11:08:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 149 states have internal predecessors, (155), 25 states have call successors, (25), 20 states have call predecessors, (25), 10 states have return successors, (52), 17 states have call predecessors, (52), 24 states have call successors, (52) [2024-11-19 11:08:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 232 transitions. [2024-11-19 11:08:29,924 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 232 transitions. Word has length 914 [2024-11-19 11:08:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:29,924 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 232 transitions. [2024-11-19 11:08:29,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 states have internal predecessors, (140), 14 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) [2024-11-19 11:08:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 232 transitions. [2024-11-19 11:08:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2024-11-19 11:08:29,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:29,933 INFO L215 NwaCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2024-11-19 11:08:29,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 11:08:30,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 11:08:30,137 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:08:30,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -297717462, now seen corresponding path program 16 times [2024-11-19 11:08:30,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:30,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602185663] [2024-11-19 11:08:30,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:08:30,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:30,234 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:08:30,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat