./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci01-1.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/Fibonacci01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:07:18,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:07:18,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:07:18,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:07:18,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:07:18,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:07:18,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:07:18,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:07:18,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:07:18,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:07:18,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:07:18,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:07:18,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:07:18,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:07:18,672 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:07:18,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:07:18,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:07:18,673 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:07:18,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:07:18,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:07:18,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:07:18,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:07:18,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:07:18,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:07:18,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:07:18,675 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:07:18,675 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:07:18,675 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:07:18,675 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:07:18,675 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:07:18,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:07:18,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:07:18,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:07:18,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:07:18,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:07:18,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:07:18,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:07:18,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:07:18,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:07:18,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:07:18,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:07:18,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:07:18,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:07:18,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:07:18,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 [2024-11-19 11:07:18,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:07:18,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:07:18,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:07:18,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:07:18,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:07:18,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci01-1.c [2024-11-19 11:07:20,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:07:20,576 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:07:20,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci01-1.c [2024-11-19 11:07:20,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2aafd0ac/9438cba47cc545a89965fcc0ada7053b/FLAGda67df9e8 [2024-11-19 11:07:20,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2aafd0ac/9438cba47cc545a89965fcc0ada7053b [2024-11-19 11:07:20,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:07:20,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:07:20,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:07:20,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:07:20,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:07:20,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae63ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20, skipping insertion in model container [2024-11-19 11:07:20,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:07:20,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:07:20,802 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:07:20,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:07:20,868 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:07:20,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20 WrapperNode [2024-11-19 11:07:20,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:07:20,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:07:20,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:07:20,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:07:20,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,909 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2024-11-19 11:07:20,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:07:20,912 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:07:20,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:07:20,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:07:20,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,934 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 11:07:20,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:07:20,945 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:07:20,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:07:20,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:07:20,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (1/1) ... [2024-11-19 11:07:20,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:07:20,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:20,978 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 11:07:20,982 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 11:07:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-19 11:07:21,033 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-19 11:07:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:07:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:07:21,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:07:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:07:21,095 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:07:21,097 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:07:21,273 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-19 11:07:21,276 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:07:21,291 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:07:21,292 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 11:07:21,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:21 BoogieIcfgContainer [2024-11-19 11:07:21,292 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:07:21,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:07:21,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:07:21,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:07:21,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:07:20" (1/3) ... [2024-11-19 11:07:21,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637232bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:21, skipping insertion in model container [2024-11-19 11:07:21,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:20" (2/3) ... [2024-11-19 11:07:21,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637232bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:21, skipping insertion in model container [2024-11-19 11:07:21,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:21" (3/3) ... [2024-11-19 11:07:21,304 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2024-11-19 11:07:21,320 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:07:21,320 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 11:07:21,385 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:07:21,395 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;@2282c786, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:07:21,396 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 11:07:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 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 11:07:21,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 11:07:21,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:21,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:21,411 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:21,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash 632723839, now seen corresponding path program 1 times [2024-11-19 11:07:21,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744683052] [2024-11-19 11:07:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:21,603 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 11:07:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:21,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744683052] [2024-11-19 11:07:21,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744683052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:21,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:21,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 11:07:21,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462491832] [2024-11-19 11:07:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:21,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 11:07:21,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 11:07:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:07:21,640 INFO L87 Difference]: Start difference. First operand has 36 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 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 3.5) internal successors, (7), 3 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 11:07:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:21,680 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-19 11:07:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 11:07:21,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 11:07:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:21,692 INFO L225 Difference]: With dead ends: 41 [2024-11-19 11:07:21,693 INFO L226 Difference]: Without dead ends: 30 [2024-11-19 11:07:21,695 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 11:07:21,699 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 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 11:07:21,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-19 11:07:21,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-19 11:07:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:07:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-19 11:07:21,733 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 8 [2024-11-19 11:07:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:21,733 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-19 11:07:21,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 11:07:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-19 11:07:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 11:07:21,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:21,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:21,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:07:21,736 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:21,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1860397429, now seen corresponding path program 1 times [2024-11-19 11:07:21,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:21,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101923348] [2024-11-19 11:07:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:21,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:21,817 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 11:07:21,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:21,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101923348] [2024-11-19 11:07:21,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101923348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:21,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:21,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:07:21,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082980301] [2024-11-19 11:07:21,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:21,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:21,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:21,822 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 11:07:21,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:21,914 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-19 11:07:21,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:21,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-19 11:07:21,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:21,916 INFO L225 Difference]: With dead ends: 30 [2024-11-19 11:07:21,916 INFO L226 Difference]: Without dead ends: 26 [2024-11-19 11:07:21,916 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 11:07:21,918 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:21,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 35 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-19 11:07:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-19 11:07:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 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 11:07:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-19 11:07:21,928 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 9 [2024-11-19 11:07:21,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:21,928 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-19 11:07:21,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 11:07:21,929 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-19 11:07:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 11:07:21,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:21,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:21,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:07:21,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:21,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1838116578, now seen corresponding path program 1 times [2024-11-19 11:07:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:21,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855821129] [2024-11-19 11:07:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,005 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 11:07:22,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:22,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855821129] [2024-11-19 11:07:22,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855821129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:22,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:22,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 11:07:22,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871139029] [2024-11-19 11:07:22,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:22,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 11:07:22,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:22,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 11:07:22,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:07:22,009 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:07:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:22,017 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-19 11:07:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 11:07:22,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-19 11:07:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:22,018 INFO L225 Difference]: With dead ends: 24 [2024-11-19 11:07:22,018 INFO L226 Difference]: Without dead ends: 21 [2024-11-19 11:07:22,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:07:22,020 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:22,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-19 11:07:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-19 11:07:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-19 11:07:22,030 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2024-11-19 11:07:22,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:22,030 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-19 11:07:22,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:07:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-19 11:07:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 11:07:22,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:22,032 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:22,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 11:07:22,032 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:22,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1084830083, now seen corresponding path program 1 times [2024-11-19 11:07:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075660738] [2024-11-19 11:07:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,228 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 11:07:22,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:22,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075660738] [2024-11-19 11:07:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075660738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:22,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:22,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:07:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325132302] [2024-11-19 11:07:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:22,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:22,232 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:22,294 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-19 11:07:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-19 11:07:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:22,300 INFO L225 Difference]: With dead ends: 35 [2024-11-19 11:07:22,300 INFO L226 Difference]: Without dead ends: 33 [2024-11-19 11:07:22,300 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 11:07:22,301 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:22,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-19 11:07:22,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-11-19 11:07:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 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 11:07:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-19 11:07:22,317 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 30 [2024-11-19 11:07:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:22,318 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-19 11:07:22,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-19 11:07:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 11:07:22,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:22,320 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:22,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 11:07:22,321 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:22,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:22,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1634885931, now seen corresponding path program 1 times [2024-11-19 11:07:22,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514976475] [2024-11-19 11:07:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,476 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 11:07:22,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514976475] [2024-11-19 11:07:22,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514976475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841734049] [2024-11-19 11:07:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:22,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:22,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:22,481 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 11:07:22,483 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 11:07:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 11:07:22,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:22,692 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 11:07:22,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:22,873 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 11:07:22,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841734049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:22,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:22,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-19 11:07:22,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072899249] [2024-11-19 11:07:22,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:22,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:07:22,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:07:22,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:07:22,876 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 11:07:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:23,149 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-11-19 11:07:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:07:23,150 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 25 [2024-11-19 11:07:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:23,152 INFO L225 Difference]: With dead ends: 91 [2024-11-19 11:07:23,153 INFO L226 Difference]: Without dead ends: 65 [2024-11-19 11:07:23,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 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 11:07:23,155 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:23,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 106 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-19 11:07:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2024-11-19 11:07:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 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 11:07:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-19 11:07:23,168 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 25 [2024-11-19 11:07:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:23,168 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-19 11:07:23,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 11:07:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-19 11:07:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 11:07:23,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:23,170 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:23,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:23,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:23,371 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:23,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash 123521023, now seen corresponding path program 2 times [2024-11-19 11:07:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:23,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42649393] [2024-11-19 11:07:23,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:23,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:23,388 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:23,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:23,492 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 11:07:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42649393] [2024-11-19 11:07:23,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42649393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507931573] [2024-11-19 11:07:23,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:23,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:23,497 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 11:07:23,503 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 11:07:23,540 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:23,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:23,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 11:07:23,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:23,592 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 11:07:23,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:07:23,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507931573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:23,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:07:23,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-19 11:07:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537031286] [2024-11-19 11:07:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:23,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:07:23,597 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 11:07:23,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:23,631 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-19 11:07:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:23,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 25 [2024-11-19 11:07:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:23,633 INFO L225 Difference]: With dead ends: 60 [2024-11-19 11:07:23,636 INFO L226 Difference]: Without dead ends: 59 [2024-11-19 11:07:23,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 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 11:07:23,637 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:23,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-19 11:07:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-19 11:07:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 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 11:07:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-19 11:07:23,650 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2024-11-19 11:07:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:23,651 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-19 11:07:23,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 11:07:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-19 11:07:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 11:07:23,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:23,652 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:23,669 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 11:07:23,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 11:07:23,857 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:23,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash -465815529, now seen corresponding path program 1 times [2024-11-19 11:07:23,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:23,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072691621] [2024-11-19 11:07:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:23,927 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 11:07:23,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:23,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072691621] [2024-11-19 11:07:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072691621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:23,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285628123] [2024-11-19 11:07:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:23,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:23,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:23,930 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 11:07:23,932 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 11:07:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:23,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 11:07:23,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:24,034 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 11:07:24,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:07:24,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285628123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:24,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:07:24,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-19 11:07:24,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890077718] [2024-11-19 11:07:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:24,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:07:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:24,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:07:24,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:07:24,036 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 11:07:24,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:24,084 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2024-11-19 11:07:24,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:07:24,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 26 [2024-11-19 11:07:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:24,086 INFO L225 Difference]: With dead ends: 82 [2024-11-19 11:07:24,086 INFO L226 Difference]: Without dead ends: 81 [2024-11-19 11:07:24,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 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 11:07:24,087 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 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 11:07:24,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-19 11:07:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-11-19 11:07:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 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 11:07:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2024-11-19 11:07:24,102 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 26 [2024-11-19 11:07:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:24,103 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2024-11-19 11:07:24,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 11:07:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2024-11-19 11:07:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 11:07:24,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:24,105 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:24,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:24,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:24,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:24,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1254155740, now seen corresponding path program 1 times [2024-11-19 11:07:24,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:24,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212516462] [2024-11-19 11:07:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:24,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-19 11:07:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212516462] [2024-11-19 11:07:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212516462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162135868] [2024-11-19 11:07:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:24,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:24,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:24,492 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 11:07:24,494 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 11:07:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:24,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 11:07:24,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-19 11:07:24,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 11:07:24,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162135868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:24,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:24,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-19 11:07:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315884116] [2024-11-19 11:07:24,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:24,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:07:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:07:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-19 11:07:24,851 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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 11:07:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:25,046 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2024-11-19 11:07:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:07:25,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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 46 [2024-11-19 11:07:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:25,050 INFO L225 Difference]: With dead ends: 141 [2024-11-19 11:07:25,050 INFO L226 Difference]: Without dead ends: 139 [2024-11-19 11:07:25,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:07:25,051 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:25,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 173 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-19 11:07:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2024-11-19 11:07:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 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 11:07:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2024-11-19 11:07:25,070 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 46 [2024-11-19 11:07:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:25,071 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2024-11-19 11:07:25,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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 11:07:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2024-11-19 11:07:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-19 11:07:25,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:25,074 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-19 11:07:25,089 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 11:07:25,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:25,282 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:25,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:25,282 INFO L85 PathProgramCache]: Analyzing trace with hash 87579128, now seen corresponding path program 1 times [2024-11-19 11:07:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:25,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853312272] [2024-11-19 11:07:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:25,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 50 proven. 86 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-19 11:07:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853312272] [2024-11-19 11:07:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853312272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066618781] [2024-11-19 11:07:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:25,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:25,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:25,473 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 11:07:25,475 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 11:07:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:25,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 11:07:25,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 67 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 11:07:25,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 67 proven. 95 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-19 11:07:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066618781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:26,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:26,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2024-11-19 11:07:26,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408286311] [2024-11-19 11:07:26,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:26,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:07:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:07:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-19 11:07:26,006 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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 11:07:26,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:26,176 INFO L93 Difference]: Finished difference Result 174 states and 299 transitions. [2024-11-19 11:07:26,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:07:26,177 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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 90 [2024-11-19 11:07:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:26,179 INFO L225 Difference]: With dead ends: 174 [2024-11-19 11:07:26,179 INFO L226 Difference]: Without dead ends: 80 [2024-11-19 11:07:26,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 172 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 11:07:26,184 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 71 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:26,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 76 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-19 11:07:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2024-11-19 11:07:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 53 states have internal predecessors, (61), 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 11:07:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2024-11-19 11:07:26,202 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 90 [2024-11-19 11:07:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:26,203 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2024-11-19 11:07:26,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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 11:07:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2024-11-19 11:07:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 11:07:26,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:26,209 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1, 1] [2024-11-19 11:07:26,226 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 11:07:26,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:26,411 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:26,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash 969727400, now seen corresponding path program 2 times [2024-11-19 11:07:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:26,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727161634] [2024-11-19 11:07:26,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:26,438 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:26,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 49 proven. 135 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-11-19 11:07:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727161634] [2024-11-19 11:07:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727161634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387450067] [2024-11-19 11:07:26,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:26,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:26,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:26,617 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 11:07:26,619 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 11:07:26,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:26,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:26,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 11:07:26,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 268 proven. 15 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-19 11:07:26,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 168 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-19 11:07:27,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387450067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:27,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:27,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-19 11:07:27,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364497087] [2024-11-19 11:07:27,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:27,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 11:07:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 11:07:27,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:07:27,093 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-19 11:07:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:27,188 INFO L93 Difference]: Finished difference Result 129 states and 179 transitions. [2024-11-19 11:07:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:07:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 123 [2024-11-19 11:07:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:27,190 INFO L225 Difference]: With dead ends: 129 [2024-11-19 11:07:27,190 INFO L226 Difference]: Without dead ends: 63 [2024-11-19 11:07:27,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 238 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 11:07:27,191 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:27,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 68 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-19 11:07:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-19 11:07:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 46 states have internal predecessors, (53), 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 11:07:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-19 11:07:27,199 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 123 [2024-11-19 11:07:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:27,199 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-19 11:07:27,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-19 11:07:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-19 11:07:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-19 11:07:27,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:27,201 INFO L215 NwaCegarLoop]: trace histogram [17, 15, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 3, 1, 1, 1, 1, 1] [2024-11-19 11:07:27,218 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 11:07:27,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:27,403 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:27,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash 935400770, now seen corresponding path program 3 times [2024-11-19 11:07:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:27,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411145977] [2024-11-19 11:07:27,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:27,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 11:07:27,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 199 proven. 25 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2024-11-19 11:07:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411145977] [2024-11-19 11:07:27,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411145977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507192103] [2024-11-19 11:07:27,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:27,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:27,608 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 11:07:27,609 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 11:07:27,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 11:07:27,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:27,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 11:07:27,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 210 proven. 6 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-11-19 11:07:27,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 210 proven. 6 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-11-19 11:07:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507192103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:28,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2024-11-19 11:07:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639576044] [2024-11-19 11:07:28,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:28,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 11:07:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 11:07:28,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:07:28,263 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 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 11:07:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:28,350 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2024-11-19 11:07:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:07:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 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 158 [2024-11-19 11:07:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:28,353 INFO L225 Difference]: With dead ends: 64 [2024-11-19 11:07:28,353 INFO L226 Difference]: Without dead ends: 63 [2024-11-19 11:07:28,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 301 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 11:07:28,355 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:28,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 170 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-19 11:07:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2024-11-19 11:07:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 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 11:07:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-19 11:07:28,367 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 158 [2024-11-19 11:07:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:28,368 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-19 11:07:28,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 states have internal predecessors, (62), 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 11:07:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-19 11:07:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 11:07:28,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:28,370 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-19 11:07:28,385 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 11:07:28,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:28,571 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:28,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash 270044825, now seen corresponding path program 2 times [2024-11-19 11:07:28,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:28,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425097381] [2024-11-19 11:07:28,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:28,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:28,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:28,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 94 proven. 159 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-19 11:07:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425097381] [2024-11-19 11:07:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425097381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033455327] [2024-11-19 11:07:28,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:28,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:28,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:28,833 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 11:07:28,835 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 11:07:28,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:28,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:28,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 11:07:28,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 106 proven. 158 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-19 11:07:29,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 106 proven. 174 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-19 11:07:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033455327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:29,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-19 11:07:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228592379] [2024-11-19 11:07:29,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:29,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 11:07:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 11:07:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:07:29,593 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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 11:07:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:29,852 INFO L93 Difference]: Finished difference Result 134 states and 169 transitions. [2024-11-19 11:07:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:07:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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 111 [2024-11-19 11:07:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:29,854 INFO L225 Difference]: With dead ends: 134 [2024-11-19 11:07:29,854 INFO L226 Difference]: Without dead ends: 84 [2024-11-19 11:07:29,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 214 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 11:07:29,855 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 127 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:29,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 104 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-19 11:07:29,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2024-11-19 11:07:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 57 states have internal predecessors, (64), 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 11:07:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-19 11:07:29,863 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 111 [2024-11-19 11:07:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:29,864 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-19 11:07:29,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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 11:07:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-19 11:07:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-19 11:07:29,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:29,865 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, 1] [2024-11-19 11:07:29,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:30,069 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,SelfDestructingSolverStorable11 [2024-11-19 11:07:30,070 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:30,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2041934374, now seen corresponding path program 3 times [2024-11-19 11:07:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146263732] [2024-11-19 11:07:30,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:30,088 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 11:07:30,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:30,224 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 11:07:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146263732] [2024-11-19 11:07:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146263732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:30,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634866336] [2024-11-19 11:07:30,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:30,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:30,227 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 11:07:30,228 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 11:07:30,293 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 11:07:30,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:30,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 11:07:30,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-19 11:07:30,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-19 11:07:31,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634866336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:31,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:31,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 32 [2024-11-19 11:07:31,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502507502] [2024-11-19 11:07:31,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:31,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 11:07:31,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 11:07:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2024-11-19 11:07:31,266 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 12 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 19 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-19 11:07:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:32,168 INFO L93 Difference]: Finished difference Result 196 states and 283 transitions. [2024-11-19 11:07:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 11:07:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 12 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 19 states have call predecessors, (22), 12 states have call successors, (22) Word has length 86 [2024-11-19 11:07:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:32,170 INFO L225 Difference]: With dead ends: 196 [2024-11-19 11:07:32,170 INFO L226 Difference]: Without dead ends: 128 [2024-11-19 11:07:32,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=767, Invalid=3139, Unknown=0, NotChecked=0, Total=3906 [2024-11-19 11:07:32,174 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 161 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:32,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 161 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:07:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-19 11:07:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 101. [2024-11-19 11:07:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.0375) internal successors, (83), 78 states have internal predecessors, (83), 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 11:07:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2024-11-19 11:07:32,191 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 86 [2024-11-19 11:07:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:32,191 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2024-11-19 11:07:32,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 12 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 19 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-19 11:07:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2024-11-19 11:07:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-19 11:07:32,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:32,198 INFO L215 NwaCegarLoop]: trace histogram [40, 38, 32, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 12, 8, 1, 1, 1, 1, 1] [2024-11-19 11:07:32,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:32,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 11:07:32,399 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:32,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1437299107, now seen corresponding path program 4 times [2024-11-19 11:07:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:32,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350182375] [2024-11-19 11:07:32,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:32,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:32,434 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:32,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5229 backedges. 455 proven. 1234 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-11-19 11:07:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:32,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350182375] [2024-11-19 11:07:32,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350182375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149144463] [2024-11-19 11:07:32,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:32,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:32,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:32,760 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 11:07:32,761 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 11:07:32,872 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:32,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:32,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 11:07:32,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5229 backedges. 426 proven. 1723 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2024-11-19 11:07:33,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5229 backedges. 426 proven. 1762 refuted. 0 times theorem prover too weak. 3041 trivial. 0 not checked. [2024-11-19 11:07:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149144463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:34,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 24 [2024-11-19 11:07:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316089634] [2024-11-19 11:07:34,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:34,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 11:07:34,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 11:07:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-19 11:07:34,306 INFO L87 Difference]: Start difference. First operand 101 states and 141 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), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-19 11:07:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:34,659 INFO L93 Difference]: Finished difference Result 251 states and 397 transitions. [2024-11-19 11:07:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 11:07:34,660 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), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) Word has length 385 [2024-11-19 11:07:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:34,662 INFO L225 Difference]: With dead ends: 251 [2024-11-19 11:07:34,662 INFO L226 Difference]: Without dead ends: 156 [2024-11-19 11:07:34,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 757 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=416, Invalid=1144, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 11:07:34,664 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 165 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:34,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 145 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:34,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-19 11:07:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 140. [2024-11-19 11:07:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 108 states have internal predecessors, (117), 15 states have call successors, (15), 8 states have call predecessors, (15), 12 states have return successors, (57), 23 states have call predecessors, (57), 14 states have call successors, (57) [2024-11-19 11:07:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 189 transitions. [2024-11-19 11:07:34,682 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 189 transitions. Word has length 385 [2024-11-19 11:07:34,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:34,682 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 189 transitions. [2024-11-19 11:07:34,682 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), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-19 11:07:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 189 transitions. [2024-11-19 11:07:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-19 11:07:34,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:34,689 INFO L215 NwaCegarLoop]: trace histogram [51, 49, 41, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 23, 16, 10, 1, 1, 1, 1, 1] [2024-11-19 11:07:34,712 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 11:07:34,893 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,SelfDestructingSolverStorable13 [2024-11-19 11:07:34,894 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:34,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1950823617, now seen corresponding path program 5 times [2024-11-19 11:07:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175477045] [2024-11-19 11:07:34,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:07:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:34,974 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-19 11:07:34,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 1785 proven. 1130 refuted. 0 times theorem prover too weak. 5735 trivial. 0 not checked. [2024-11-19 11:07:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175477045] [2024-11-19 11:07:35,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175477045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:35,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941164088] [2024-11-19 11:07:35,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:07:35,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:35,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:35,539 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 11:07:35,540 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 11:07:35,702 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-19 11:07:35,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:35,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 11:07:35,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 1767 proven. 1135 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2024-11-19 11:07:35,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 1764 proven. 1177 refuted. 0 times theorem prover too weak. 5709 trivial. 0 not checked. [2024-11-19 11:07:37,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941164088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:37,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:37,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 20] total 27 [2024-11-19 11:07:37,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038110386] [2024-11-19 11:07:37,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:37,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 11:07:37,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:37,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 11:07:37,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2024-11-19 11:07:37,377 INFO L87 Difference]: Start difference. First operand 140 states and 189 transitions. Second operand has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 18 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (28), 13 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-19 11:07:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:37,770 INFO L93 Difference]: Finished difference Result 279 states and 428 transitions. [2024-11-19 11:07:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 11:07:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 18 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (28), 13 states have call predecessors, (28), 18 states have call successors, (28) Word has length 492 [2024-11-19 11:07:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:37,772 INFO L225 Difference]: With dead ends: 279 [2024-11-19 11:07:37,772 INFO L226 Difference]: Without dead ends: 145 [2024-11-19 11:07:37,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 972 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=519, Invalid=1373, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 11:07:37,775 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 152 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:37,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 138 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-19 11:07:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2024-11-19 11:07:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 95 states have internal predecessors, (104), 14 states have call successors, (14), 11 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2024-11-19 11:07:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2024-11-19 11:07:37,785 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 492 [2024-11-19 11:07:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:37,786 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2024-11-19 11:07:37,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 18 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (28), 13 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-19 11:07:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2024-11-19 11:07:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-19 11:07:37,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:37,789 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 22, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 9, 5, 1, 1, 1, 1, 1] [2024-11-19 11:07:37,806 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 11:07:37,990 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,SelfDestructingSolverStorable14 [2024-11-19 11:07:37,991 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:37,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash -352920561, now seen corresponding path program 6 times [2024-11-19 11:07:37,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:37,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457290993] [2024-11-19 11:07:37,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 11:07:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:38,020 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-19 11:07:38,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 502 proven. 671 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-19 11:07:38,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:38,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457290993] [2024-11-19 11:07:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457290993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:38,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673016174] [2024-11-19 11:07:38,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 11:07:38,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:38,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:38,242 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 11:07:38,243 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 11:07:38,357 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-19 11:07:38,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:38,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 11:07:38,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 485 proven. 734 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2024-11-19 11:07:38,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 481 proven. 786 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2024-11-19 11:07:39,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673016174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:39,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:39,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 18] total 23 [2024-11-19 11:07:39,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958707600] [2024-11-19 11:07:39,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:39,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 11:07:39,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 11:07:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-11-19 11:07:39,985 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 23 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-19 11:07:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:40,338 INFO L93 Difference]: Finished difference Result 246 states and 327 transitions. [2024-11-19 11:07:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 11:07:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) Word has length 262 [2024-11-19 11:07:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:40,340 INFO L225 Difference]: With dead ends: 246 [2024-11-19 11:07:40,341 INFO L226 Difference]: Without dead ends: 130 [2024-11-19 11:07:40,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 510 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=312, Invalid=810, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 11:07:40,342 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 52 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:40,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 253 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:07:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-19 11:07:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2024-11-19 11:07:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 101 states have internal predecessors, (108), 16 states have call successors, (16), 14 states have call predecessors, (16), 7 states have return successors, (30), 12 states have call predecessors, (30), 15 states have call successors, (30) [2024-11-19 11:07:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2024-11-19 11:07:40,352 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 262 [2024-11-19 11:07:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:40,353 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2024-11-19 11:07:40,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.782608695652174) internal successors, (133), 23 states have internal predecessors, (133), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-19 11:07:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2024-11-19 11:07:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-19 11:07:40,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:40,356 INFO L215 NwaCegarLoop]: trace histogram [42, 40, 34, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1, 1] [2024-11-19 11:07:40,372 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 11:07:40,559 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,SelfDestructingSolverStorable15 [2024-11-19 11:07:40,560 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:40,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash -570782742, now seen corresponding path program 7 times [2024-11-19 11:07:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:40,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42341937] [2024-11-19 11:07:40,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 11:07:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 830 proven. 1470 refuted. 0 times theorem prover too weak. 3503 trivial. 0 not checked. [2024-11-19 11:07:42,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:42,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42341937] [2024-11-19 11:07:42,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42341937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:42,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409304280] [2024-11-19 11:07:42,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 11:07:42,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:42,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:42,855 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 11:07:42,856 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 11:07:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:43,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-19 11:07:43,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2024-11-19 11:07:43,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2024-11-19 11:07:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409304280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:49,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2024-11-19 11:07:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60400408] [2024-11-19 11:07:49,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:49,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 11:07:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 11:07:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 11:07:49,725 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2024-11-19 11:07:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:49,963 INFO L93 Difference]: Finished difference Result 174 states and 235 transitions. [2024-11-19 11:07:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 11:07:49,964 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) Word has length 405 [2024-11-19 11:07:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:49,966 INFO L225 Difference]: With dead ends: 174 [2024-11-19 11:07:49,966 INFO L226 Difference]: Without dead ends: 173 [2024-11-19 11:07:49,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 794 SyntacticMatches, 51 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=591, Invalid=2061, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 11:07:49,968 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:49,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 188 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-19 11:07:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 155. [2024-11-19 11:07:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 125 states have (on average 1.032) internal successors, (129), 122 states have internal predecessors, (129), 19 states have call successors, (19), 14 states have call predecessors, (19), 10 states have return successors, (60), 18 states have call predecessors, (60), 18 states have call successors, (60) [2024-11-19 11:07:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 208 transitions. [2024-11-19 11:07:49,981 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 208 transitions. Word has length 405 [2024-11-19 11:07:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:49,982 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 208 transitions. [2024-11-19 11:07:49,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2024-11-19 11:07:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 208 transitions. [2024-11-19 11:07:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2024-11-19 11:07:49,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:49,988 INFO L215 NwaCegarLoop]: trace histogram [93, 92, 75, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 29, 18, 1, 1, 1, 1, 1] [2024-11-19 11:07:50,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:50,189 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,SelfDestructingSolverStorable16 [2024-11-19 11:07:50,189 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:50,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash 485440642, now seen corresponding path program 8 times [2024-11-19 11:07:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967745165] [2024-11-19 11:07:50,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:50,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:50,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 1430 proven. 5737 refuted. 0 times theorem prover too weak. 22886 trivial. 0 not checked. [2024-11-19 11:07:51,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967745165] [2024-11-19 11:07:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967745165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681104233] [2024-11-19 11:07:51,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:51,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:51,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:51,371 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 11:07:51,372 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 11:07:51,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:51,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:51,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 11:07:51,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 1688 proven. 6747 refuted. 0 times theorem prover too weak. 21618 trivial. 0 not checked. [2024-11-19 11:07:51,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 1688 proven. 6862 refuted. 0 times theorem prover too weak. 21503 trivial. 0 not checked. [2024-11-19 11:07:54,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681104233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:54,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:54,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2024-11-19 11:07:54,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777438200] [2024-11-19 11:07:54,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:54,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 11:07:54,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:54,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 11:07:54,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-19 11:07:54,643 INFO L87 Difference]: Start difference. First operand 155 states and 208 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), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-19 11:07:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:55,161 INFO L93 Difference]: Finished difference Result 340 states and 503 transitions. [2024-11-19 11:07:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 11:07:55,162 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), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) Word has length 909 [2024-11-19 11:07:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:55,164 INFO L225 Difference]: With dead ends: 340 [2024-11-19 11:07:55,164 INFO L226 Difference]: Without dead ends: 191 [2024-11-19 11:07:55,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1869 GetRequests, 1800 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2024-11-19 11:07:55,167 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 318 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:55,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 207 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:07:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-19 11:07:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 146. [2024-11-19 11:07:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 115 states have internal predecessors, (120), 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 11:07:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 193 transitions. [2024-11-19 11:07:55,179 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 193 transitions. Word has length 909 [2024-11-19 11:07:55,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:55,180 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 193 transitions. [2024-11-19 11:07:55,180 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), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-19 11:07:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 193 transitions. [2024-11-19 11:07:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2024-11-19 11:07:55,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:55,191 INFO L215 NwaCegarLoop]: trace histogram [129, 123, 105, 66, 66, 66, 66, 62, 62, 62, 62, 62, 61, 61, 61, 60, 39, 24, 1, 1, 1, 1, 1] [2024-11-19 11:07:55,210 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 11:07:55,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:55,391 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:07:55,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash 86873186, now seen corresponding path program 9 times [2024-11-19 11:07:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884091731] [2024-11-19 11:07:55,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:55,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-11-19 11:07:55,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 16280 proven. 6125 refuted. 0 times theorem prover too weak. 34062 trivial. 0 not checked. [2024-11-19 11:08:03,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:08:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884091731] [2024-11-19 11:08:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884091731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:08:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978686166] [2024-11-19 11:08:03,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:08:03,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:03,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:08:03,116 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 11:08:03,117 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 11:08:03,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-11-19 11:08:03,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:03,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-19 11:08:03,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:08:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 16360 proven. 4596 refuted. 0 times theorem prover too weak. 35511 trivial. 0 not checked. [2024-11-19 11:08:04,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 17227 proven. 4261 refuted. 0 times theorem prover too weak. 34979 trivial. 0 not checked. [2024-11-19 11:08:27,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978686166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:27,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:27,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 38] total 53 [2024-11-19 11:08:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070994496] [2024-11-19 11:08:27,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:27,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-19 11:08:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-19 11:08:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 11:08:27,479 INFO L87 Difference]: Start difference. First operand 146 states and 193 transitions. Second operand has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) [2024-11-19 11:08:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:27,753 INFO L93 Difference]: Finished difference Result 204 states and 304 transitions. [2024-11-19 11:08:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 11:08:27,754 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) Word has length 1242 [2024-11-19 11:08:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:27,757 INFO L225 Difference]: With dead ends: 204 [2024-11-19 11:08:27,758 INFO L226 Difference]: Without dead ends: 203 [2024-11-19 11:08:27,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2654 GetRequests, 2476 SyntacticMatches, 119 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6503 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=2876, Unknown=0, NotChecked=0, Total=3660 [2024-11-19 11:08:27,760 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:27,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 228 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:08:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-19 11:08:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 164. [2024-11-19 11:08:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 129 states have internal predecessors, (134), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (83), 22 states have call predecessors, (83), 19 states have call successors, (83) [2024-11-19 11:08:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 237 transitions. [2024-11-19 11:08:27,776 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 237 transitions. Word has length 1242 [2024-11-19 11:08:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:27,777 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 237 transitions. [2024-11-19 11:08:27,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) [2024-11-19 11:08:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 237 transitions. [2024-11-19 11:08:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2055 [2024-11-19 11:08:27,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:27,801 INFO L215 NwaCegarLoop]: trace histogram [211, 207, 171, 106, 106, 106, 106, 104, 104, 104, 104, 104, 103, 103, 103, 102, 65, 40, 1, 1, 1, 1, 1] [2024-11-19 11:08:27,822 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 11:08:28,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:28,006 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:08:28,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2137318338, now seen corresponding path program 10 times [2024-11-19 11:08:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422420480] [2024-11-19 11:08:28,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:08:28,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:28,232 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:08:28,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 155365 backedges. 2299 proven. 16191 refuted. 0 times theorem prover too weak. 136875 trivial. 0 not checked. [2024-11-19 11:08:29,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:08:29,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422420480] [2024-11-19 11:08:29,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422420480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:08:29,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207885180] [2024-11-19 11:08:29,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:08:29,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:29,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:08:29,793 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 11:08:29,795 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 11:08:30,507 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:08:30,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:08:30,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 11:08:30,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:08:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 155365 backedges. 77441 proven. 5516 refuted. 0 times theorem prover too weak. 72408 trivial. 0 not checked. [2024-11-19 11:08:30,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 155365 backedges. 2765 proven. 19164 refuted. 0 times theorem prover too weak. 133436 trivial. 0 not checked. [2024-11-19 11:08:34,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207885180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:34,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:34,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 28] total 33 [2024-11-19 11:08:34,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654920276] [2024-11-19 11:08:34,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:34,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 11:08:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:34,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 11:08:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 11:08:34,807 INFO L87 Difference]: Start difference. First operand 164 states and 237 transitions. Second operand has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 28 states have call successors, (35), 5 states have call predecessors, (35), 13 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-19 11:08:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:35,336 INFO L93 Difference]: Finished difference Result 404 states and 673 transitions. [2024-11-19 11:08:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-19 11:08:35,336 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 28 states have call successors, (35), 5 states have call predecessors, (35), 13 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) Word has length 2054 [2024-11-19 11:08:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:35,339 INFO L225 Difference]: With dead ends: 404 [2024-11-19 11:08:35,339 INFO L226 Difference]: Without dead ends: 246 [2024-11-19 11:08:35,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4169 GetRequests, 4089 SyntacticMatches, 18 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1036, Invalid=2996, Unknown=0, NotChecked=0, Total=4032 [2024-11-19 11:08:35,343 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 236 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:35,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 195 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:08:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-19 11:08:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 221. [2024-11-19 11:08:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 178 states have (on average 1.0280898876404494) internal successors, (183), 174 states have internal predecessors, (183), 27 states have call successors, (27), 17 states have call predecessors, (27), 15 states have return successors, (108), 29 states have call predecessors, (108), 26 states have call successors, (108) [2024-11-19 11:08:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 318 transitions. [2024-11-19 11:08:35,362 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 318 transitions. Word has length 2054 [2024-11-19 11:08:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:35,363 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 318 transitions. [2024-11-19 11:08:35,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 28 states have call successors, (35), 5 states have call predecessors, (35), 13 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-19 11:08:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 318 transitions. [2024-11-19 11:08:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2793 [2024-11-19 11:08:35,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:08:35,434 INFO L215 NwaCegarLoop]: trace histogram [287, 281, 233, 145, 145, 145, 145, 141, 141, 141, 141, 141, 140, 140, 140, 139, 88, 54, 1, 1, 1, 1, 1] [2024-11-19 11:08:35,451 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 11:08:35,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:08:35,635 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-19 11:08:35,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:08:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2124868265, now seen corresponding path program 11 times [2024-11-19 11:08:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:08:35,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666139489] [2024-11-19 11:08:35,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:08:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:08:35,836 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 77 check-sat command(s) [2024-11-19 11:08:35,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat