/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:46:25,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:46:25,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:46:25,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:46:25,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:46:25,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:46:25,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:46:25,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:46:25,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:46:25,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:46:25,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:46:25,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-10-16 17:46:26,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:46:26,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:46:26,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:46:26,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:46:26,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:46:26,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:46:26,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:46:26,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:46:26,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:46:26,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:46:26,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:46:26,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:46:26,061 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:46:26,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:46:26,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:46:26,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:46:26,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:46:26,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:46:26,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:46:26,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:46:26,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:46:26,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:46:26,064 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:46:26,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:46:26,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:46:26,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:46:26,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:46:26,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:46:26,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:46:26,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:46:26,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:46:26,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:46:26,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:46:26,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:46:26,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:46:26,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:46:26,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:46:26,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:46:26,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:46:26,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:46:26,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:46:26,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:46:26,513 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:46:26,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2022-10-16 17:46:26,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ffc2b2d/ab54f6f8a8ed4c968d69315aa5fbc87d/FLAG5f09b1451 [2022-10-16 17:46:27,157 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:46:27,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2022-10-16 17:46:27,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ffc2b2d/ab54f6f8a8ed4c968d69315aa5fbc87d/FLAG5f09b1451 [2022-10-16 17:46:27,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ffc2b2d/ab54f6f8a8ed4c968d69315aa5fbc87d [2022-10-16 17:46:27,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:46:27,556 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:46:27,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:46:27,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:46:27,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:46:27,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5c143a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27, skipping insertion in model container [2022-10-16 17:46:27,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:46:27,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:46:27,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2022-10-16 17:46:27,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:46:27,874 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:46:27,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2022-10-16 17:46:27,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:46:27,906 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:46:27,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27 WrapperNode [2022-10-16 17:46:27,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:46:27,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:46:27,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:46:27,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:46:27,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,942 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-16 17:46:27,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:46:27,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:46:27,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:46:27,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:46:27,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,964 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:46:27,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:46:27,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:46:27,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:46:27,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (1/1) ... [2022-10-16 17:46:27,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:46:27,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:28,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 17:46:28,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 17:46:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:46:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:46:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-16 17:46:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-16 17:46:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-16 17:46:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-16 17:46:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:46:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:46:28,142 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:46:28,144 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:46:28,328 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:46:28,336 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:46:28,336 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 17:46:28,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:46:28 BoogieIcfgContainer [2022-10-16 17:46:28,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:46:28,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:46:28,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:46:28,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:46:28,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:46:27" (1/3) ... [2022-10-16 17:46:28,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f7d71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:46:28, skipping insertion in model container [2022-10-16 17:46:28,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:27" (2/3) ... [2022-10-16 17:46:28,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f7d71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:46:28, skipping insertion in model container [2022-10-16 17:46:28,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:46:28" (3/3) ... [2022-10-16 17:46:28,351 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2022-10-16 17:46:28,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:46:28,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:46:28,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:46:28,500 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5a3393c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:46:28,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:46:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 17:46:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:46:28,514 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:28,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:28,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-10-16 17:46:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:28,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752683669] [2022-10-16 17:46:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:28,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:28,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752683669] [2022-10-16 17:46:28,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752683669] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:28,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:28,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009937032] [2022-10-16 17:46:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:28,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:28,875 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:29,035 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-10-16 17:46:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:46:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 17:46:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:29,051 INFO L225 Difference]: With dead ends: 79 [2022-10-16 17:46:29,051 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 17:46:29,057 INFO L412 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 [2022-10-16 17:46:29,067 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 40 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:29,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 178 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 17:46:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-10-16 17:46:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 48 states have internal predecessors, (56), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-10-16 17:46:29,150 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2022-10-16 17:46:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:29,154 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-10-16 17:46:29,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-10-16 17:46:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 17:46:29,156 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:29,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:29,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:46:29,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:29,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-10-16 17:46:29,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:29,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361490268] [2022-10-16 17:46:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:29,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:29,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361490268] [2022-10-16 17:46:29,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361490268] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:29,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:29,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:46:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864193598] [2022-10-16 17:46:29,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:29,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:46:29,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:29,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:46:29,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:46:29,209 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. 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) [2022-10-16 17:46:29,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:29,241 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-10-16 17:46:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:46:29,245 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 [2022-10-16 17:46:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:29,247 INFO L225 Difference]: With dead ends: 60 [2022-10-16 17:46:29,247 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 17:46:29,250 INFO L412 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 [2022-10-16 17:46:29,253 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:29,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 17:46:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-10-16 17:46:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-10-16 17:46:29,278 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-10-16 17:46:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:29,278 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-10-16 17:46:29,278 INFO L496 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) [2022-10-16 17:46:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-10-16 17:46:29,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 17:46:29,282 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:29,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:29,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:46:29,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-10-16 17:46:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:29,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144358424] [2022-10-16 17:46:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:29,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:29,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144358424] [2022-10-16 17:46:29,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144358424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:29,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:29,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 17:46:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797216803] [2022-10-16 17:46:29,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:29,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:46:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:29,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:46:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:46:29,481 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:29,663 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-10-16 17:46:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:46:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-16 17:46:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:29,665 INFO L225 Difference]: With dead ends: 56 [2022-10-16 17:46:29,665 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:46:29,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:29,667 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:29,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 72 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:29,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:46:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-16 17:46:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 42 states have internal predecessors, (48), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-10-16 17:46:29,679 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 13 [2022-10-16 17:46:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:29,680 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-10-16 17:46:29,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-10-16 17:46:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 17:46:29,681 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:29,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:29,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:46:29,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-10-16 17:46:29,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:29,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359199116] [2022-10-16 17:46:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:29,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:29,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:29,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359199116] [2022-10-16 17:46:29,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359199116] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:29,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:29,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:46:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862320817] [2022-10-16 17:46:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:29,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:46:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:46:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:46:29,725 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:29,763 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-10-16 17:46:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:46:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-16 17:46:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:29,771 INFO L225 Difference]: With dead ends: 54 [2022-10-16 17:46:29,771 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:46:29,771 INFO L412 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 [2022-10-16 17:46:29,773 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:29,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 66 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:46:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-10-16 17:46:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-10-16 17:46:29,796 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-10-16 17:46:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:29,797 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-10-16 17:46:29,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-10-16 17:46:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 17:46:29,799 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:29,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:29,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:46:29,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:29,801 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-10-16 17:46:29,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:29,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999554012] [2022-10-16 17:46:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:29,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:46:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:29,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:29,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999554012] [2022-10-16 17:46:29,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999554012] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:29,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:29,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102709887] [2022-10-16 17:46:29,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:29,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:30,001 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:30,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:30,047 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-10-16 17:46:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-10-16 17:46:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:30,058 INFO L225 Difference]: With dead ends: 76 [2022-10-16 17:46:30,058 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 17:46:30,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:30,065 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:30,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 17:46:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-10-16 17:46:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2022-10-16 17:46:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-10-16 17:46:30,091 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-10-16 17:46:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:30,091 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-10-16 17:46:30,092 INFO L496 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) [2022-10-16 17:46:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-10-16 17:46:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 17:46:30,094 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:30,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:30,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 17:46:30,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:30,095 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-10-16 17:46:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:30,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492888557] [2022-10-16 17:46:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:46:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 17:46:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:30,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492888557] [2022-10-16 17:46:30,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492888557] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:30,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877142085] [2022-10-16 17:46:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:30,307 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) [2022-10-16 17:46:30,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:46:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:46:30,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:30,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:30,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877142085] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:30,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:30,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:46:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173518932] [2022-10-16 17:46:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:30,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:46:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:46:30,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:46:30,510 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:30,653 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-10-16 17:46:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:46:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-10-16 17:46:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:30,655 INFO L225 Difference]: With dead ends: 111 [2022-10-16 17:46:30,655 INFO L226 Difference]: Without dead ends: 61 [2022-10-16 17:46:30,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:46:30,658 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:30,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 121 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-16 17:46:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-10-16 17:46:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-16 17:46:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-10-16 17:46:30,669 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-10-16 17:46:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:30,670 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-10-16 17:46:30,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-10-16 17:46:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 17:46:30,672 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:30,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:30,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:30,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 17:46:30,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-10-16 17:46:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659703320] [2022-10-16 17:46:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:46:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:31,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:31,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659703320] [2022-10-16 17:46:31,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659703320] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:31,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:31,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:31,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314819327] [2022-10-16 17:46:31,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:31,028 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:31,068 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:46:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-10-16 17:46:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:31,070 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:46:31,070 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 17:46:31,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:31,072 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:31,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 17:46:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-10-16 17:46:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2022-10-16 17:46:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-10-16 17:46:31,085 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-10-16 17:46:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:31,085 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-10-16 17:46:31,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-10-16 17:46:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:46:31,087 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:31,087 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:31,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:46:31,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:31,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-10-16 17:46:31,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:31,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823604035] [2022-10-16 17:46:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:46:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:46:31,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823604035] [2022-10-16 17:46:31,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823604035] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:31,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:31,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469758806] [2022-10-16 17:46:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:31,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:31,243 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:31,276 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:46:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-10-16 17:46:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:31,278 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:46:31,278 INFO L226 Difference]: Without dead ends: 83 [2022-10-16 17:46:31,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:31,280 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:31,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-10-16 17:46:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-10-16 17:46:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2022-10-16 17:46:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-10-16 17:46:31,294 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-10-16 17:46:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:31,294 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-10-16 17:46:31,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-10-16 17:46:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 17:46:31,297 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:31,297 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 17:46:31,298 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash 900334698, now seen corresponding path program 1 times [2022-10-16 17:46:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:31,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145946477] [2022-10-16 17:46:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:46:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-16 17:46:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 17:46:31,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:31,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145946477] [2022-10-16 17:46:31,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145946477] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:31,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129919598] [2022-10-16 17:46:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:31,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:31,409 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) [2022-10-16 17:46:31,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:46:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:46:31,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:31,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:31,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129919598] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:31,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:31,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:46:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154039542] [2022-10-16 17:46:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:46:31,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:46:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:46:31,561 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:31,674 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-10-16 17:46:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:46:31,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-10-16 17:46:31,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:31,676 INFO L225 Difference]: With dead ends: 141 [2022-10-16 17:46:31,680 INFO L226 Difference]: Without dead ends: 76 [2022-10-16 17:46:31,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:46:31,685 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:31,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 152 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-16 17:46:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-10-16 17:46:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2022-10-16 17:46:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-10-16 17:46:31,711 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2022-10-16 17:46:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:31,711 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-10-16 17:46:31,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-10-16 17:46:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:46:31,716 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:31,716 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:31,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 17:46:31,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-16 17:46:31,918 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-10-16 17:46:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:31,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600571429] [2022-10-16 17:46:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:46:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:46:32,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:32,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600571429] [2022-10-16 17:46:32,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600571429] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:32,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013811172] [2022-10-16 17:46:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:32,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:32,031 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) [2022-10-16 17:46:32,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:46:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:46:32,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:32,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:32,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013811172] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:32,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:32,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-10-16 17:46:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507317295] [2022-10-16 17:46:32,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:46:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:46:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:46:32,316 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:32,752 INFO L93 Difference]: Finished difference Result 185 states and 242 transitions. [2022-10-16 17:46:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:46:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-10-16 17:46:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:32,757 INFO L225 Difference]: With dead ends: 185 [2022-10-16 17:46:32,757 INFO L226 Difference]: Without dead ends: 120 [2022-10-16 17:46:32,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:46:32,768 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 121 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 356 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-16 17:46:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2022-10-16 17:46:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.1625) internal successors, (93), 85 states have internal predecessors, (93), 14 states have call successors, (14), 5 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2022-10-16 17:46:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2022-10-16 17:46:32,810 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 30 [2022-10-16 17:46:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:32,811 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2022-10-16 17:46:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2022-10-16 17:46:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 17:46:32,813 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:32,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:32,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-16 17:46:33,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:33,028 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash -781616985, now seen corresponding path program 1 times [2022-10-16 17:46:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:33,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251032159] [2022-10-16 17:46:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:46:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 17:46:33,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:33,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251032159] [2022-10-16 17:46:33,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251032159] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:33,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:33,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537683144] [2022-10-16 17:46:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:33,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:33,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:33,123 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:33,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:33,160 INFO L93 Difference]: Finished difference Result 140 states and 189 transitions. [2022-10-16 17:46:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:33,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-10-16 17:46:33,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:33,163 INFO L225 Difference]: With dead ends: 140 [2022-10-16 17:46:33,163 INFO L226 Difference]: Without dead ends: 138 [2022-10-16 17:46:33,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:33,164 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:33,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:33,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-10-16 17:46:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2022-10-16 17:46:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.1368421052631579) internal successors, (108), 98 states have internal predecessors, (108), 17 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (40), 20 states have call predecessors, (40), 16 states have call successors, (40) [2022-10-16 17:46:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2022-10-16 17:46:33,182 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 31 [2022-10-16 17:46:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:33,183 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2022-10-16 17:46:33,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2022-10-16 17:46:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:46:33,186 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:33,186 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:33,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 17:46:33,186 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash -744072932, now seen corresponding path program 1 times [2022-10-16 17:46:33,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:33,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387486664] [2022-10-16 17:46:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 17:46:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:33,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:33,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387486664] [2022-10-16 17:46:33,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387486664] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:33,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789082862] [2022-10-16 17:46:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:33,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:33,286 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) [2022-10-16 17:46:33,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:46:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 17:46:33,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:33,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:33,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789082862] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:33,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:33,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 16 [2022-10-16 17:46:33,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132048187] [2022-10-16 17:46:33,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:33,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:46:33,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:46:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:46:33,628 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-16 17:46:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:34,033 INFO L93 Difference]: Finished difference Result 265 states and 352 transitions. [2022-10-16 17:46:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:46:34,033 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2022-10-16 17:46:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:34,035 INFO L225 Difference]: With dead ends: 265 [2022-10-16 17:46:34,036 INFO L226 Difference]: Without dead ends: 156 [2022-10-16 17:46:34,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:46:34,038 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 112 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:34,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 406 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-16 17:46:34,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2022-10-16 17:46:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 110 states have internal predecessors, (122), 19 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (45), 22 states have call predecessors, (45), 18 states have call successors, (45) [2022-10-16 17:46:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-10-16 17:46:34,055 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 36 [2022-10-16 17:46:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:34,055 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-10-16 17:46:34,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-16 17:46:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2022-10-16 17:46:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:46:34,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:34,057 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:34,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:34,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:34,274 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash -949317654, now seen corresponding path program 2 times [2022-10-16 17:46:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:34,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476016659] [2022-10-16 17:46:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:34,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:46:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:34,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:34,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476016659] [2022-10-16 17:46:34,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476016659] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:34,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492929650] [2022-10-16 17:46:34,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:34,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:34,370 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) [2022-10-16 17:46:34,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:46:34,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:34,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:34,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:34,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:34,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:34,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492929650] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:34,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:34,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:46:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150114648] [2022-10-16 17:46:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:34,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:34,459 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:34,491 INFO L93 Difference]: Finished difference Result 150 states and 199 transitions. [2022-10-16 17:46:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:34,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-10-16 17:46:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:34,493 INFO L225 Difference]: With dead ends: 150 [2022-10-16 17:46:34,494 INFO L226 Difference]: Without dead ends: 149 [2022-10-16 17:46:34,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:34,495 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:34,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:34,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-10-16 17:46:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2022-10-16 17:46:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 111 states have (on average 1.135135135135135) internal successors, (126), 112 states have internal predecessors, (126), 19 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (45), 24 states have call predecessors, (45), 18 states have call successors, (45) [2022-10-16 17:46:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2022-10-16 17:46:34,510 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 36 [2022-10-16 17:46:34,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:34,510 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2022-10-16 17:46:34,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:34,511 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2022-10-16 17:46:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 17:46:34,512 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:34,512 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:34,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 17:46:34,726 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 635923895, now seen corresponding path program 1 times [2022-10-16 17:46:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:34,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058482761] [2022-10-16 17:46:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:34,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:46:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:34,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:34,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058482761] [2022-10-16 17:46:34,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058482761] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:34,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107619762] [2022-10-16 17:46:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:34,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:34,823 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) [2022-10-16 17:46:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:46:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:34,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:34,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:34,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107619762] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:34,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:34,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-10-16 17:46:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731639932] [2022-10-16 17:46:34,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:34,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:46:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:34,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:46:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:46:34,986 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:35,086 INFO L93 Difference]: Finished difference Result 164 states and 216 transitions. [2022-10-16 17:46:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 17:46:35,086 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2022-10-16 17:46:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:35,088 INFO L225 Difference]: With dead ends: 164 [2022-10-16 17:46:35,088 INFO L226 Difference]: Without dead ends: 163 [2022-10-16 17:46:35,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:46:35,090 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:35,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-10-16 17:46:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 143. [2022-10-16 17:46:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 111 states have internal predecessors, (129), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (42), 25 states have call predecessors, (42), 17 states have call successors, (42) [2022-10-16 17:46:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2022-10-16 17:46:35,103 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 37 [2022-10-16 17:46:35,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:35,104 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2022-10-16 17:46:35,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2022-10-16 17:46:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 17:46:35,106 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:35,106 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:35,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-16 17:46:35,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:35,321 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1004191886, now seen corresponding path program 2 times [2022-10-16 17:46:35,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:35,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783514179] [2022-10-16 17:46:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:46:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:46:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:35,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783514179] [2022-10-16 17:46:35,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783514179] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:35,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763184638] [2022-10-16 17:46:35,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:35,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:35,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:35,421 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) [2022-10-16 17:46:35,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:46:35,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:35,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:35,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:35,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:35,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:35,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763184638] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:35,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:35,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:46:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567990837] [2022-10-16 17:46:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:35,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:35,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:35,521 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:35,551 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2022-10-16 17:46:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:35,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-10-16 17:46:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:35,553 INFO L225 Difference]: With dead ends: 154 [2022-10-16 17:46:35,553 INFO L226 Difference]: Without dead ends: 153 [2022-10-16 17:46:35,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:35,555 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:35,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-10-16 17:46:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2022-10-16 17:46:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 116 states have (on average 1.146551724137931) internal successors, (133), 113 states have internal predecessors, (133), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (42), 27 states have call predecessors, (42), 17 states have call successors, (42) [2022-10-16 17:46:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2022-10-16 17:46:35,569 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 51 [2022-10-16 17:46:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:35,569 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2022-10-16 17:46:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2022-10-16 17:46:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-16 17:46:35,570 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:35,570 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:35,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:35,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:35,777 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:35,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1065177323, now seen corresponding path program 1 times [2022-10-16 17:46:35,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:35,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185239539] [2022-10-16 17:46:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:46:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:46:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:35,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:35,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185239539] [2022-10-16 17:46:35,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185239539] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:35,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007702274] [2022-10-16 17:46:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:35,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:35,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:35,882 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) [2022-10-16 17:46:35,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:46:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 17:46:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:36,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:36,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007702274] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:36,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:36,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 15 [2022-10-16 17:46:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827195727] [2022-10-16 17:46:36,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 17:46:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 17:46:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-10-16 17:46:36,174 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:46:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:36,565 INFO L93 Difference]: Finished difference Result 283 states and 380 transitions. [2022-10-16 17:46:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:46:36,566 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2022-10-16 17:46:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:36,567 INFO L225 Difference]: With dead ends: 283 [2022-10-16 17:46:36,567 INFO L226 Difference]: Without dead ends: 161 [2022-10-16 17:46:36,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:46:36,569 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 89 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:36,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 163 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-10-16 17:46:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2022-10-16 17:46:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 108 states have (on average 1.1203703703703705) internal successors, (121), 109 states have internal predecessors, (121), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (31), 22 states have call predecessors, (31), 16 states have call successors, (31) [2022-10-16 17:46:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2022-10-16 17:46:36,580 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 169 transitions. Word has length 52 [2022-10-16 17:46:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:36,581 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 169 transitions. [2022-10-16 17:46:36,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:46:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 169 transitions. [2022-10-16 17:46:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-16 17:46:36,582 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:36,582 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:36,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-16 17:46:36,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:46:36,796 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:36,797 INFO L85 PathProgramCache]: Analyzing trace with hash -738631343, now seen corresponding path program 1 times [2022-10-16 17:46:36,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:36,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443919095] [2022-10-16 17:46:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:36,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:46:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:46:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:36,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443919095] [2022-10-16 17:46:36,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443919095] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:36,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:36,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 17:46:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022630051] [2022-10-16 17:46:36,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:36,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 17:46:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 17:46:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:46:36,986 INFO L87 Difference]: Start difference. First operand 139 states and 169 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 17:46:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:37,088 INFO L93 Difference]: Finished difference Result 187 states and 242 transitions. [2022-10-16 17:46:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:46:37,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2022-10-16 17:46:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:37,091 INFO L225 Difference]: With dead ends: 187 [2022-10-16 17:46:37,091 INFO L226 Difference]: Without dead ends: 186 [2022-10-16 17:46:37,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:46:37,092 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:37,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 289 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-10-16 17:46:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 157. [2022-10-16 17:46:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 121 states have (on average 1.1074380165289257) internal successors, (134), 123 states have internal predecessors, (134), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (50), 26 states have call predecessors, (50), 19 states have call successors, (50) [2022-10-16 17:46:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2022-10-16 17:46:37,108 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 50 [2022-10-16 17:46:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:37,109 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2022-10-16 17:46:37,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 17:46:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2022-10-16 17:46:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 17:46:37,111 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:37,111 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:37,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-16 17:46:37,111 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1422735082, now seen corresponding path program 1 times [2022-10-16 17:46:37,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:37,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403959661] [2022-10-16 17:46:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:46:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:37,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:37,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403959661] [2022-10-16 17:46:37,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403959661] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:37,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:37,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:37,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620940866] [2022-10-16 17:46:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:37,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:37,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:37,202 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:37,241 INFO L93 Difference]: Finished difference Result 179 states and 230 transitions. [2022-10-16 17:46:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:37,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-10-16 17:46:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:37,243 INFO L225 Difference]: With dead ends: 179 [2022-10-16 17:46:37,243 INFO L226 Difference]: Without dead ends: 178 [2022-10-16 17:46:37,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:37,245 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:37,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-10-16 17:46:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2022-10-16 17:46:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 128 states have (on average 1.125) internal successors, (144), 127 states have internal predecessors, (144), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (50), 29 states have call predecessors, (50), 19 states have call successors, (50) [2022-10-16 17:46:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 214 transitions. [2022-10-16 17:46:37,263 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 214 transitions. Word has length 51 [2022-10-16 17:46:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:37,263 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 214 transitions. [2022-10-16 17:46:37,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 214 transitions. [2022-10-16 17:46:37,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 17:46:37,264 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:37,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:37,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 17:46:37,265 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:37,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash -103078069, now seen corresponding path program 1 times [2022-10-16 17:46:37,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:37,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498981398] [2022-10-16 17:46:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:46:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:46:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 17:46:37,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:37,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498981398] [2022-10-16 17:46:37,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498981398] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:37,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612580416] [2022-10-16 17:46:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:37,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:37,383 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) [2022-10-16 17:46:37,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:46:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:46:37,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:37,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:37,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612580416] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:37,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:37,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2022-10-16 17:46:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585400016] [2022-10-16 17:46:37,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:46:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:46:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:46:37,856 INFO L87 Difference]: Start difference. First operand 164 states and 214 transitions. Second operand has 26 states, 24 states have (on average 3.875) internal successors, (93), 18 states have internal predecessors, (93), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 17:46:38,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:38,382 INFO L93 Difference]: Finished difference Result 275 states and 365 transitions. [2022-10-16 17:46:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 17:46:38,382 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.875) internal successors, (93), 18 states have internal predecessors, (93), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 60 [2022-10-16 17:46:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:38,385 INFO L225 Difference]: With dead ends: 275 [2022-10-16 17:46:38,385 INFO L226 Difference]: Without dead ends: 147 [2022-10-16 17:46:38,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2022-10-16 17:46:38,388 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 181 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:38,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 217 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-10-16 17:46:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2022-10-16 17:46:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.102803738317757) internal successors, (118), 110 states have internal predecessors, (118), 17 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (23), 21 states have call predecessors, (23), 16 states have call successors, (23) [2022-10-16 17:46:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2022-10-16 17:46:38,403 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 60 [2022-10-16 17:46:38,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:38,403 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2022-10-16 17:46:38,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.875) internal successors, (93), 18 states have internal predecessors, (93), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 17:46:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2022-10-16 17:46:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 17:46:38,406 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:38,406 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:38,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:38,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:38,620 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:38,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1160941452, now seen corresponding path program 1 times [2022-10-16 17:46:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:38,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936418668] [2022-10-16 17:46:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:46:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 17:46:38,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:38,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936418668] [2022-10-16 17:46:38,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936418668] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:38,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:38,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:38,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057121020] [2022-10-16 17:46:38,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:38,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:38,702 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:38,731 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2022-10-16 17:46:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:38,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-10-16 17:46:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:38,733 INFO L225 Difference]: With dead ends: 141 [2022-10-16 17:46:38,733 INFO L226 Difference]: Without dead ends: 140 [2022-10-16 17:46:38,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:38,734 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:38,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 143 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-10-16 17:46:38,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2022-10-16 17:46:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 105 states have internal predecessors, (110), 16 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2022-10-16 17:46:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 148 transitions. [2022-10-16 17:46:38,746 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 148 transitions. Word has length 55 [2022-10-16 17:46:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:38,746 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 148 transitions. [2022-10-16 17:46:38,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 148 transitions. [2022-10-16 17:46:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 17:46:38,748 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:38,748 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:38,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 17:46:38,749 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1620774316, now seen corresponding path program 1 times [2022-10-16 17:46:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:38,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677265396] [2022-10-16 17:46:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:46:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:46:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 17:46:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:38,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677265396] [2022-10-16 17:46:38,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677265396] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:38,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275731093] [2022-10-16 17:46:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:38,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:38,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:38,975 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) [2022-10-16 17:46:38,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:46:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 17:46:39,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 27 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:39,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 27 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:39,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275731093] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:39,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:39,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-10-16 17:46:39,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88608445] [2022-10-16 17:46:39,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:46:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:46:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:46:39,353 INFO L87 Difference]: Start difference. First operand 132 states and 148 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:46:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:39,558 INFO L93 Difference]: Finished difference Result 209 states and 230 transitions. [2022-10-16 17:46:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:46:39,559 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 87 [2022-10-16 17:46:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:39,560 INFO L225 Difference]: With dead ends: 209 [2022-10-16 17:46:39,560 INFO L226 Difference]: Without dead ends: 129 [2022-10-16 17:46:39,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 180 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-10-16 17:46:39,562 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 122 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:39,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 142 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-10-16 17:46:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-10-16 17:46:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 98 states have (on average 1.0714285714285714) internal successors, (105), 103 states have internal predecessors, (105), 16 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (20), 18 states have call predecessors, (20), 15 states have call successors, (20) [2022-10-16 17:46:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2022-10-16 17:46:39,574 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 87 [2022-10-16 17:46:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:39,574 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2022-10-16 17:46:39,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:46:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2022-10-16 17:46:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 17:46:39,576 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:39,576 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:39,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:39,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-10-16 17:46:39,791 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:39,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1424711268, now seen corresponding path program 1 times [2022-10-16 17:46:39,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:39,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131349412] [2022-10-16 17:46:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:39,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:46:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:46:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-16 17:46:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131349412] [2022-10-16 17:46:39,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131349412] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996468801] [2022-10-16 17:46:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:39,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:39,976 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) [2022-10-16 17:46:39,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:46:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:46:40,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 17:46:40,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 17:46:40,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996468801] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:40,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:40,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 26 [2022-10-16 17:46:40,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862396765] [2022-10-16 17:46:40,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:46:40,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:46:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:46:40,631 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-10-16 17:46:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:41,496 INFO L93 Difference]: Finished difference Result 216 states and 238 transitions. [2022-10-16 17:46:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 17:46:41,497 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 68 [2022-10-16 17:46:41,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:41,498 INFO L225 Difference]: With dead ends: 216 [2022-10-16 17:46:41,498 INFO L226 Difference]: Without dead ends: 120 [2022-10-16 17:46:41,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:46:41,501 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 115 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:41,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 173 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:46:41,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-16 17:46:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2022-10-16 17:46:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 81 states have internal predecessors, (82), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-10-16 17:46:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2022-10-16 17:46:41,512 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 68 [2022-10-16 17:46:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:41,512 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2022-10-16 17:46:41,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-10-16 17:46:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2022-10-16 17:46:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-16 17:46:41,513 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:41,514 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:41,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:41,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-16 17:46:41,729 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 58474788, now seen corresponding path program 1 times [2022-10-16 17:46:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:41,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303177240] [2022-10-16 17:46:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:41,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:46:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 17:46:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:42,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303177240] [2022-10-16 17:46:42,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303177240] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:42,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268424498] [2022-10-16 17:46:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:42,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:42,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:42,085 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) [2022-10-16 17:46:42,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:46:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:46:42,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 17:46:42,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 17:46:42,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268424498] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:42,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:42,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-10-16 17:46:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687487104] [2022-10-16 17:46:42,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:42,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:46:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:46:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:46:42,848 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:42,955 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2022-10-16 17:46:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:46:42,956 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 83 [2022-10-16 17:46:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:42,957 INFO L225 Difference]: With dead ends: 101 [2022-10-16 17:46:42,957 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 17:46:42,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 165 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:46:42,959 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 26 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:42,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 366 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:42,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 17:46:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-10-16 17:46:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.051948051948052) internal successors, (81), 80 states have internal predecessors, (81), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-10-16 17:46:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-10-16 17:46:42,968 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 83 [2022-10-16 17:46:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:42,968 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-10-16 17:46:42,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-10-16 17:46:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-16 17:46:42,970 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:42,970 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:43,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:43,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 17:46:43,184 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:43,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1812718525, now seen corresponding path program 1 times [2022-10-16 17:46:43,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:43,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711744444] [2022-10-16 17:46:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:46:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 17:46:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:43,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711744444] [2022-10-16 17:46:43,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711744444] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:43,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300955531] [2022-10-16 17:46:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:43,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:43,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:43,665 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) [2022-10-16 17:46:43,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 17:46:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:46:43,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 17:46:43,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 17:46:44,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300955531] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:44,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:44,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-10-16 17:46:44,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127110074] [2022-10-16 17:46:44,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-16 17:46:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-16 17:46:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-10-16 17:46:44,484 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:44,690 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2022-10-16 17:46:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-16 17:46:44,691 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 84 [2022-10-16 17:46:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:44,692 INFO L225 Difference]: With dead ends: 121 [2022-10-16 17:46:44,692 INFO L226 Difference]: Without dead ends: 0 [2022-10-16 17:46:44,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 167 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 17:46:44,712 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:44,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 477 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-16 17:46:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-16 17:46:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-16 17:46:44,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2022-10-16 17:46:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:44,715 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-16 17:46:44,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:44,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-16 17:46:44,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-16 17:46:44,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-10-16 17:46:44,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-10-16 17:46:44,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-10-16 17:46:44,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-10-16 17:46:44,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-10-16 17:46:44,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-10-16 17:46:44,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-10-16 17:46:44,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-10-16 17:46:44,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-10-16 17:46:44,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-10-16 17:46:44,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-10-16 17:46:44,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-10-16 17:46:44,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:44,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-16 17:46:44,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-16 17:46:45,823 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-16 17:46:45,823 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-10-16 17:46:45,824 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-16 17:46:45,824 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-10-16 17:46:45,824 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 4) [2022-10-16 17:46:45,824 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-10-16 17:46:45,824 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-10-16 17:46:45,824 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 4) (<= 4 |ULTIMATE.start_main_~x~0#1|)) [2022-10-16 17:46:45,825 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-10-16 17:46:45,825 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-10-16 17:46:45,825 INFO L902 garLoopResultBuilder]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2022-10-16 17:46:45,825 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,825 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,825 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,825 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,826 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (not (<= |fibo2_#in~n| 3)))) (and (or (and (< 1 fibo2_~n) (<= fibo2_~n |fibo2_#in~n|)) .cse0) (or (<= |fibo2_#in~n| fibo2_~n) .cse0))) [2022-10-16 17:46:45,826 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,826 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,826 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,826 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse0 (not (<= |fibo2_#in~n| 3)))) (and (or (and (<= |fibo2_#in~n| fibo2_~n) (<= 1 |fibo2_#t~ret6|)) .cse0 (not (<= 3 |fibo2_#in~n|))) (or (and (< 0 (+ |fibo2_#t~ret6| 3)) (<= |fibo2_#t~ret6| 1) (< 1 fibo2_~n) (<= fibo2_~n |fibo2_#in~n|)) .cse0))) [2022-10-16 17:46:45,826 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,826 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-10-16 17:46:45,827 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-10-16 17:46:45,828 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:45,828 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,828 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,828 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,828 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,828 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (not (<= |fibo1_#in~n| 4)) (not (<= 4 |fibo1_#in~n|)) .cse0) (or (and (< 1 fibo1_~n) .cse0) (not (<= |fibo1_#in~n| 2))))) [2022-10-16 17:46:45,828 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,829 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,829 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,829 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-10-16 17:46:45,829 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,829 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (not (<= |fibo1_#in~n| 2)))) (and (or (and (<= fibo1_~n |fibo1_#in~n|) (not (<= fibo1_~n 1))) .cse0) (or (= |fibo1_#t~ret4| 1) .cse0) (or (not (<= |fibo1_#in~n| 4)) (not (<= 4 |fibo1_#in~n|)) (and (<= 2 |fibo1_#t~ret4|) (= fibo1_~n |fibo1_#in~n|) (<= |fibo1_#t~ret4| 2))))) [2022-10-16 17:46:45,829 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,829 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,830 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,830 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,830 INFO L902 garLoopResultBuilder]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2022-10-16 17:46:45,830 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,830 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:45,830 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-10-16 17:46:45,830 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-10-16 17:46:45,831 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-10-16 17:46:45,835 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:45,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 17:46:45,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:46:45 BoogieIcfgContainer [2022-10-16 17:46:45,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 17:46:45,854 INFO L158 Benchmark]: Toolchain (without parser) took 18302.69ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 126.0MB in the beginning and 203.7MB in the end (delta: -77.7MB). Peak memory consumption was 146.3MB. Max. memory is 8.0GB. [2022-10-16 17:46:45,854 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 151.0MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 17:46:45,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.06ms. Allocated memory is still 151.0MB. Free memory was 125.8MB in the beginning and 116.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-16 17:46:45,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.85ms. Allocated memory is still 151.0MB. Free memory was 116.2MB in the beginning and 114.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-16 17:46:45,855 INFO L158 Benchmark]: Boogie Preprocessor took 23.03ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 113.9MB in the end (delta: 855.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 17:46:45,855 INFO L158 Benchmark]: RCFGBuilder took 371.26ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 102.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-16 17:46:45,856 INFO L158 Benchmark]: TraceAbstraction took 17511.57ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 102.2MB in the beginning and 203.7MB in the end (delta: -101.5MB). Peak memory consumption was 122.2MB. Max. memory is 8.0GB. [2022-10-16 17:46:45,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 151.0MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 347.06ms. Allocated memory is still 151.0MB. Free memory was 125.8MB in the beginning and 116.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.85ms. Allocated memory is still 151.0MB. Free memory was 116.2MB in the beginning and 114.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.03ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 113.9MB in the end (delta: 855.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 371.26ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 102.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 17511.57ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 102.2MB in the beginning and 203.7MB in the end (delta: -101.5MB). Peak memory consumption was 122.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 17.4s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1102 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1054 mSDsluCounter, 4525 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3664 mSDsCounter, 311 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4840 IncrementalHoareTripleChecker+Invalid, 5151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 311 mSolverCounterUnsat, 861 mSDtfsCounter, 4840 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1600 GetRequests, 1251 SyntacticMatches, 41 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=18, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 215 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 290 PreInvPairs, 384 NumberOfFragments, 136 HoareAnnotationTreeSize, 290 FomulaSimplifications, 1725 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3379 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 1680 NumberOfCodeBlocks, 1680 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2171 ConstructedInterpolants, 0 QuantifiedInterpolants, 4816 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1583 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 46 InterpolantComputations, 15 PerfectInterpolantSequences, 1172/1535 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: x <= 4 RESULT: Ultimate proved your program to be correct! [2022-10-16 17:46:45,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...