/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_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:45:45,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:45:45,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:45:45,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 17:45:45,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:45:45,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:45:45,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:45:45,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:45:45,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:45:45,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:45:45,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:45:45,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:45:45,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:45:45,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:45:45,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:45:45,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:45:45,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 17:45:45,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:45:45,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:45:45,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:45:45,470 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 17:45:45,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:45:45,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:45:45,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:45:45,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:45:45,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:45:45,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:45:45,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:45:45,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:45:45,504 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:45:45,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:45:45,504 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:45:45,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:45:45,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:45:45,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:45:45,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:45:45,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:45:45,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:45:45,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:45:45,507 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:45:45,507 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:45:45,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:45:45,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:45:45,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:45:45,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:45:45,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:45:45,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:45:45,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:45:45,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:45:45,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:45:45,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:45:45,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:45:45,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:45:45,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:45:45,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:45:45,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:45:45,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:45:45,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:45:45,899 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:45:45,900 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:45:45,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_25-1.c [2022-10-16 17:45:45,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee32c814/5c7381dd4c3346499a975e834972fcdf/FLAG365d98de4 [2022-10-16 17:45:46,558 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:45:46,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_25-1.c [2022-10-16 17:45:46,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee32c814/5c7381dd4c3346499a975e834972fcdf/FLAG365d98de4 [2022-10-16 17:45:46,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee32c814/5c7381dd4c3346499a975e834972fcdf [2022-10-16 17:45:46,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:45:46,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:45:46,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:45:46,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:45:46,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:45:46,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:45:46" (1/1) ... [2022-10-16 17:45:46,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21299c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:46, skipping insertion in model container [2022-10-16 17:45:46,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:45:46" (1/1) ... [2022-10-16 17:45:46,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:45:46,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:45:47,145 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_25-1.c[952,965] [2022-10-16 17:45:47,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:45:47,157 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:45:47,176 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_25-1.c[952,965] [2022-10-16 17:45:47,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:45:47,192 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:45:47,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47 WrapperNode [2022-10-16 17:45:47,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:45:47,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:45:47,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:45:47,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:45:47,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,229 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-16 17:45:47,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:45:47,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:45:47,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:45:47,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:45:47,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,250 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:45:47,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:45:47,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:45:47,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:45:47,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (1/1) ... [2022-10-16 17:45:47,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:45:47,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:47,292 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 17:45:47,297 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 17:45:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:45:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:45:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-16 17:45:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-16 17:45:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-16 17:45:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-16 17:45:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:45:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:45:47,425 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:45:47,428 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:45:47,608 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:45:47,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:45:47,617 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 17:45:47,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:45:47 BoogieIcfgContainer [2022-10-16 17:45:47,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:45:47,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:45:47,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:45:47,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:45:47,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:45:46" (1/3) ... [2022-10-16 17:45:47,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efaf033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:45:47, skipping insertion in model container [2022-10-16 17:45:47,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:47" (2/3) ... [2022-10-16 17:45:47,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efaf033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:45:47, skipping insertion in model container [2022-10-16 17:45:47,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:45:47" (3/3) ... [2022-10-16 17:45:47,654 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2022-10-16 17:45:47,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:45:47,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:45:47,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:45:47,753 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;@377a0794, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:45:47,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:45:47,759 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 17:45:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:45:47,768 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:47,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:47,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:47,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-10-16 17:45:47,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:47,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52537826] [2022-10-16 17:45:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:47,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:48,033 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 17:45:48,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:48,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52537826] [2022-10-16 17:45:48,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52537826] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:48,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:48,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138584731] [2022-10-16 17:45:48,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:48,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:48,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:48,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:48,088 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 17:45:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:48,235 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-10-16 17:45:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:45:48,238 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 17:45:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:48,249 INFO L225 Difference]: With dead ends: 79 [2022-10-16 17:45:48,250 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 17:45:48,254 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 17:45:48,259 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 17:45:48,260 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 17:45:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 17:45:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-10-16 17:45:48,310 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 17:45:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-10-16 17:45:48,316 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2022-10-16 17:45:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:48,316 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-10-16 17:45:48,317 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 17:45:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-10-16 17:45:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 17:45:48,317 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:48,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:48,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:45:48,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:48,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-10-16 17:45:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:48,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63460987] [2022-10-16 17:45:48,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:48,366 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 17:45:48,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:48,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63460987] [2022-10-16 17:45:48,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63460987] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:48,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:48,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:45:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598132942] [2022-10-16 17:45:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:48,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:45:48,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:48,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:45:48,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:45:48,372 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 17:45:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:48,412 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-10-16 17:45:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:45:48,413 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 17:45:48,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:48,414 INFO L225 Difference]: With dead ends: 60 [2022-10-16 17:45:48,414 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 17:45:48,415 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 17:45:48,417 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 17:45:48,418 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 17:45:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 17:45:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-10-16 17:45:48,429 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 17:45:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-10-16 17:45:48,432 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-10-16 17:45:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:48,433 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-10-16 17:45:48,433 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 17:45:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-10-16 17:45:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 17:45:48,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:48,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:48,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:45:48,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:48,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:48,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-10-16 17:45:48,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:48,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459533246] [2022-10-16 17:45:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:48,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:48,660 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 17:45:48,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459533246] [2022-10-16 17:45:48,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459533246] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:48,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:48,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 17:45:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078562691] [2022-10-16 17:45:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:48,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:45:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:45:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:45:48,664 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 17:45:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:48,863 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-10-16 17:45:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:45:48,865 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 17:45:48,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:48,866 INFO L225 Difference]: With dead ends: 56 [2022-10-16 17:45:48,866 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:45:48,867 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 17:45:48,872 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, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:48,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 72 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:45:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:45:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-16 17:45:48,897 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 17:45:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-10-16 17:45:48,902 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 13 [2022-10-16 17:45:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:48,903 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-10-16 17:45:48,903 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 17:45:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-10-16 17:45:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 17:45:48,904 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:48,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:48,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:45:48,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:48,909 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-10-16 17:45:48,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:48,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523522596] [2022-10-16 17:45:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:48,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:48,979 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 17:45:48,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:48,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523522596] [2022-10-16 17:45:48,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523522596] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:48,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:48,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:45:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815882050] [2022-10-16 17:45:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:48,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:45:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:45:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:45:48,983 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 17:45:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:49,003 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-10-16 17:45:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:45:49,004 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 17:45:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:49,005 INFO L225 Difference]: With dead ends: 54 [2022-10-16 17:45:49,005 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:45:49,006 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 17:45:49,008 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 17:45:49,008 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 17:45:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:45:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-10-16 17:45:49,025 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 17:45:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-10-16 17:45:49,029 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-10-16 17:45:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:49,029 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-10-16 17:45:49,030 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 17:45:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-10-16 17:45:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 17:45:49,036 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:49,036 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 17:45:49,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:45:49,037 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:49,038 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-10-16 17:45:49,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:49,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191020214] [2022-10-16 17:45:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:45:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:49,329 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 17:45:49,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191020214] [2022-10-16 17:45:49,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191020214] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:49,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:49,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:49,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481865715] [2022-10-16 17:45:49,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:49,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:49,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:49,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:49,334 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 17:45:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:49,405 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-10-16 17:45:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:49,406 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 17:45:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:49,408 INFO L225 Difference]: With dead ends: 76 [2022-10-16 17:45:49,408 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 17:45:49,409 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 17:45:49,412 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, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:49,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:45:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 17:45:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-10-16 17:45:49,441 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 17:45:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-10-16 17:45:49,445 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-10-16 17:45:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-10-16 17:45:49,446 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 17:45:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-10-16 17:45:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 17:45:49,450 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:49,450 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 17:45:49,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 17:45:49,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-10-16 17:45:49,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:49,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745461097] [2022-10-16 17:45:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:49,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:49,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:49,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:45:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:49,633 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 17:45:49,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:49,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745461097] [2022-10-16 17:45:49,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745461097] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:49,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725458482] [2022-10-16 17:45:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:49,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:49,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:49,639 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 17:45:49,641 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 17:45:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:49,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:45:49,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:49,811 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 17:45:49,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:49,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725458482] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:49,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:49,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:45:49,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615235899] [2022-10-16 17:45:49,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:49,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:45:49,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:49,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:45:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:45:49,815 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 17:45:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:49,936 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-10-16 17:45:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:45:49,937 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 17:45:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:49,938 INFO L225 Difference]: With dead ends: 111 [2022-10-16 17:45:49,938 INFO L226 Difference]: Without dead ends: 61 [2022-10-16 17:45:49,940 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 17:45:49,941 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 17:45:49,942 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 17:45:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-16 17:45:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-10-16 17:45:49,952 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 17:45:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-10-16 17:45:49,953 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-10-16 17:45:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:49,954 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-10-16 17:45:49,954 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 17:45:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-10-16 17:45:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 17:45:49,956 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:49,956 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 17:45:50,000 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 17:45:50,170 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 17:45:50,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:50,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-10-16 17:45:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:50,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925607780] [2022-10-16 17:45:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:45:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,356 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 17:45:50,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:50,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925607780] [2022-10-16 17:45:50,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925607780] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:50,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:50,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:50,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205204222] [2022-10-16 17:45:50,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:50,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:50,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:50,364 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 17:45:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:50,418 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:45:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:50,419 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 17:45:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:50,420 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:45:50,420 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 17:45:50,421 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 17:45:50,422 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 17:45:50,423 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 17:45:50,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 17:45:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-10-16 17:45:50,434 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 17:45:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-10-16 17:45:50,436 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-10-16 17:45:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:50,436 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-10-16 17:45:50,436 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 17:45:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-10-16 17:45:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:45:50,438 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:50,438 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 17:45:50,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:45:50,439 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:50,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-10-16 17:45:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:50,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529330648] [2022-10-16 17:45:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:45:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,538 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 17:45:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:50,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529330648] [2022-10-16 17:45:50,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529330648] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:50,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:50,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860313575] [2022-10-16 17:45:50,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:50,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:50,547 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 17:45:50,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:50,600 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:45:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:50,602 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 17:45:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:50,606 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:45:50,606 INFO L226 Difference]: Without dead ends: 83 [2022-10-16 17:45:50,606 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 17:45:50,608 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 17:45:50,608 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 17:45:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-10-16 17:45:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-10-16 17:45:50,640 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 17:45:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-10-16 17:45:50,646 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-10-16 17:45:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:50,646 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-10-16 17:45:50,647 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 17:45:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-10-16 17:45:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 17:45:50,651 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:50,654 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 17:45:50,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 17:45:50,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:50,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash 900334698, now seen corresponding path program 1 times [2022-10-16 17:45:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:50,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373586668] [2022-10-16 17:45:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:50,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:45:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-16 17:45:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,765 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 17:45:50,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:50,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373586668] [2022-10-16 17:45:50,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373586668] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:50,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341495942] [2022-10-16 17:45:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:50,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:50,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:50,768 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 17:45:50,786 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 17:45:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:45:50,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:50,884 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 17:45:50,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341495942] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:50,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:50,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:45:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122338921] [2022-10-16 17:45:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:45:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:45:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:45:50,887 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 17:45:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:50,991 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-10-16 17:45:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:45:50,992 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 17:45:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:50,993 INFO L225 Difference]: With dead ends: 141 [2022-10-16 17:45:50,993 INFO L226 Difference]: Without dead ends: 76 [2022-10-16 17:45:50,995 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 17:45:50,996 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 17:45:50,997 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 17:45:50,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-16 17:45:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-10-16 17:45:51,008 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 17:45:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-10-16 17:45:51,010 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2022-10-16 17:45:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:51,010 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-10-16 17:45:51,010 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 17:45:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-10-16 17:45:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:45:51,012 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:51,012 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 17:45:51,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:51,226 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 17:45:51,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-10-16 17:45:51,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:51,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048076617] [2022-10-16 17:45:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:45:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:51,418 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 17:45:51,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:51,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048076617] [2022-10-16 17:45:51,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048076617] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:51,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899043168] [2022-10-16 17:45:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:51,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:51,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:51,424 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 17:45:51,452 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 17:45:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:51,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:45:51,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:51,600 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 17:45:51,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:51,780 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 17:45:51,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899043168] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:51,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:51,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-10-16 17:45:51,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004925] [2022-10-16 17:45:51,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:51,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:45:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:45:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:45:51,784 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 17:45:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:52,308 INFO L93 Difference]: Finished difference Result 202 states and 267 transitions. [2022-10-16 17:45:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:45:52,308 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 17:45:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:52,310 INFO L225 Difference]: With dead ends: 202 [2022-10-16 17:45:52,310 INFO L226 Difference]: Without dead ends: 137 [2022-10-16 17:45:52,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-10-16 17:45:52,313 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 143 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:52,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:45:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-16 17:45:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2022-10-16 17:45:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2022-10-16 17:45:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2022-10-16 17:45:52,341 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2022-10-16 17:45:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:52,341 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2022-10-16 17:45:52,342 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 17:45:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2022-10-16 17:45:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 17:45:52,343 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:52,343 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:52,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:52,557 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 17:45:52,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:52,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:52,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1193456114, now seen corresponding path program 2 times [2022-10-16 17:45:52,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:52,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825459355] [2022-10-16 17:45:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:45:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:45:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:45:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:52,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825459355] [2022-10-16 17:45:52,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825459355] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:52,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526577593] [2022-10-16 17:45:52,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:45:52,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:52,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:52,665 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 17:45:52,686 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 17:45:52,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:45:52,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:45:52,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:45:52,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:45:52,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:52,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526577593] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:52,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:52,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:45:52,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759910847] [2022-10-16 17:45:52,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:52,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:52,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:45:52,775 INFO L87 Difference]: Start difference. First operand 121 states and 157 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 17:45:52,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:52,808 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2022-10-16 17:45:52,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:52,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-10-16 17:45:52,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:52,812 INFO L225 Difference]: With dead ends: 132 [2022-10-16 17:45:52,812 INFO L226 Difference]: Without dead ends: 131 [2022-10-16 17:45:52,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 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 17:45:52,817 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 17:45:52,817 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 17:45:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-16 17:45:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2022-10-16 17:45:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2022-10-16 17:45:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2022-10-16 17:45:52,845 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2022-10-16 17:45:52,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:52,847 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2022-10-16 17:45:52,847 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 17:45:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2022-10-16 17:45:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 17:45:52,852 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:52,853 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:52,877 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 17:45:53,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:53,064 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:53,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566201, now seen corresponding path program 1 times [2022-10-16 17:45:53,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:53,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515846651] [2022-10-16 17:45:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:53,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:45:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:45:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:45:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:53,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515846651] [2022-10-16 17:45:53,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515846651] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:53,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925847287] [2022-10-16 17:45:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:53,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:53,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:53,192 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 17:45:53,217 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 17:45:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:53,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:45:53,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:53,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:45:53,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925847287] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:53,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:53,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-10-16 17:45:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284534444] [2022-10-16 17:45:53,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:53,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:45:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:45:53,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:45:53,636 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:45:54,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:54,410 INFO L93 Difference]: Finished difference Result 353 states and 473 transitions. [2022-10-16 17:45:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 17:45:54,411 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2022-10-16 17:45:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:54,413 INFO L225 Difference]: With dead ends: 353 [2022-10-16 17:45:54,413 INFO L226 Difference]: Without dead ends: 243 [2022-10-16 17:45:54,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:45:54,416 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 252 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:54,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1061 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:45:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-10-16 17:45:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2022-10-16 17:45:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 171 states have (on average 1.1578947368421053) internal successors, (198), 174 states have internal predecessors, (198), 29 states have call successors, (29), 12 states have call predecessors, (29), 15 states have return successors, (48), 32 states have call predecessors, (48), 28 states have call successors, (48) [2022-10-16 17:45:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 275 transitions. [2022-10-16 17:45:54,438 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 275 transitions. Word has length 43 [2022-10-16 17:45:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:54,439 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 275 transitions. [2022-10-16 17:45:54,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:45:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 275 transitions. [2022-10-16 17:45:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 17:45:54,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:54,441 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:54,471 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 17:45:54,654 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,SelfDestructingSolverStorable11 [2022-10-16 17:45:54,655 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash 512153854, now seen corresponding path program 1 times [2022-10-16 17:45:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:54,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304467906] [2022-10-16 17:45:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:45:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:45:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-10-16 17:45:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304467906] [2022-10-16 17:45:54,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304467906] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809372106] [2022-10-16 17:45:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:54,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:54,840 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 17:45:54,846 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 17:45:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-16 17:45:54,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:55,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:45:55,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809372106] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:55,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:55,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 23, 23] total 47 [2022-10-16 17:45:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015629818] [2022-10-16 17:45:55,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:55,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:45:55,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:45:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:45:55,729 INFO L87 Difference]: Start difference. First operand 219 states and 275 transitions. Second operand has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:45:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:57,301 INFO L93 Difference]: Finished difference Result 681 states and 909 transitions. [2022-10-16 17:45:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:45:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 72 [2022-10-16 17:45:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:57,305 INFO L225 Difference]: With dead ends: 681 [2022-10-16 17:45:57,305 INFO L226 Difference]: Without dead ends: 483 [2022-10-16 17:45:57,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=567, Invalid=3855, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:45:57,311 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 617 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:57,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2028 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:45:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-10-16 17:45:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 436. [2022-10-16 17:45:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 345 states have (on average 1.1594202898550725) internal successors, (400), 347 states have internal predecessors, (400), 58 states have call successors, (58), 26 states have call predecessors, (58), 29 states have return successors, (81), 62 states have call predecessors, (81), 57 states have call successors, (81) [2022-10-16 17:45:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 539 transitions. [2022-10-16 17:45:57,343 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 539 transitions. Word has length 72 [2022-10-16 17:45:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:57,343 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 539 transitions. [2022-10-16 17:45:57,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:45:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 539 transitions. [2022-10-16 17:45:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:45:57,345 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:57,345 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:57,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:57,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:57,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:57,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1802141276, now seen corresponding path program 2 times [2022-10-16 17:45:57,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:57,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277442424] [2022-10-16 17:45:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:57,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:45:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:45:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:45:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:57,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277442424] [2022-10-16 17:45:57,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277442424] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:57,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514552108] [2022-10-16 17:45:57,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:45:57,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:57,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:57,764 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 17:45:57,791 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 17:45:57,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:45:57,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:45:57,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:45:57,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:45:57,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:57,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514552108] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:57,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:57,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:45:57,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721793361] [2022-10-16 17:45:57,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:57,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:57,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:45:57,888 INFO L87 Difference]: Start difference. First operand 436 states and 539 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 17:45:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:57,931 INFO L93 Difference]: Finished difference Result 447 states and 552 transitions. [2022-10-16 17:45:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:57,931 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 120 [2022-10-16 17:45:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:57,936 INFO L225 Difference]: With dead ends: 447 [2022-10-16 17:45:57,936 INFO L226 Difference]: Without dead ends: 446 [2022-10-16 17:45:57,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 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 17:45:57,937 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:57,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:57,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-10-16 17:45:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2022-10-16 17:45:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 349 states have (on average 1.157593123209169) internal successors, (404), 349 states have internal predecessors, (404), 58 states have call successors, (58), 26 states have call predecessors, (58), 29 states have return successors, (81), 64 states have call predecessors, (81), 57 states have call successors, (81) [2022-10-16 17:45:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 543 transitions. [2022-10-16 17:45:57,977 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 543 transitions. Word has length 120 [2022-10-16 17:45:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:57,978 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 543 transitions. [2022-10-16 17:45:57,978 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 17:45:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 543 transitions. [2022-10-16 17:45:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-16 17:45:57,980 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:57,980 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:58,024 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 17:45:58,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:58,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -31804611, now seen corresponding path program 1 times [2022-10-16 17:45:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:58,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515996999] [2022-10-16 17:45:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:45:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:45:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:45:58,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515996999] [2022-10-16 17:45:58,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515996999] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797530815] [2022-10-16 17:45:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:58,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:58,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:58,360 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 17:45:58,383 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 17:45:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 17:45:58,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 20 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:59,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:00,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797530815] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:00,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:00,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 39, 39] total 57 [2022-10-16 17:46:00,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175278739] [2022-10-16 17:46:00,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:00,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-16 17:46:00,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-16 17:46:00,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2824, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 17:46:00,140 INFO L87 Difference]: Start difference. First operand 440 states and 543 transitions. Second operand has 57 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 34 states have internal predecessors, (157), 28 states have call successors, (32), 25 states have call predecessors, (32), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:02,436 INFO L93 Difference]: Finished difference Result 1119 states and 1430 transitions. [2022-10-16 17:46:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-16 17:46:02,437 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 34 states have internal predecessors, (157), 28 states have call successors, (32), 25 states have call predecessors, (32), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 121 [2022-10-16 17:46:02,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:02,442 INFO L225 Difference]: With dead ends: 1119 [2022-10-16 17:46:02,442 INFO L226 Difference]: Without dead ends: 700 [2022-10-16 17:46:02,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 195 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=857, Invalid=5785, Unknown=0, NotChecked=0, Total=6642 [2022-10-16 17:46:02,450 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 803 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:02,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 2870 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 17:46:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-10-16 17:46:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 639. [2022-10-16 17:46:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 508 states have (on average 1.1633858267716535) internal successors, (591), 509 states have internal predecessors, (591), 84 states have call successors, (84), 40 states have call predecessors, (84), 43 states have return successors, (101), 89 states have call predecessors, (101), 83 states have call successors, (101) [2022-10-16 17:46:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 776 transitions. [2022-10-16 17:46:02,493 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 776 transitions. Word has length 121 [2022-10-16 17:46:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:02,493 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 776 transitions. [2022-10-16 17:46:02,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 34 states have internal predecessors, (157), 28 states have call successors, (32), 25 states have call predecessors, (32), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 776 transitions. [2022-10-16 17:46:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-10-16 17:46:02,496 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:02,496 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:02,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:02,709 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,SelfDestructingSolverStorable14 [2022-10-16 17:46:02,710 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash 305836501, now seen corresponding path program 1 times [2022-10-16 17:46:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:02,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708014437] [2022-10-16 17:46:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-16 17:46:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-10-16 17:46:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-10-16 17:46:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:02,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708014437] [2022-10-16 17:46:02,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708014437] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:02,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:02,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:02,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688176396] [2022-10-16 17:46:02,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:02,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:02,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:02,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:02,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:02,938 INFO L87 Difference]: Start difference. First operand 639 states and 776 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 17:46:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:02,991 INFO L93 Difference]: Finished difference Result 652 states and 789 transitions. [2022-10-16 17:46:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:02,992 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 163 [2022-10-16 17:46:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:02,997 INFO L225 Difference]: With dead ends: 652 [2022-10-16 17:46:02,997 INFO L226 Difference]: Without dead ends: 650 [2022-10-16 17:46:02,998 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 17:46:02,998 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 5 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:02,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-10-16 17:46:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 635. [2022-10-16 17:46:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 505 states have (on average 1.1643564356435643) internal successors, (588), 506 states have internal predecessors, (588), 83 states have call successors, (83), 40 states have call predecessors, (83), 43 states have return successors, (98), 88 states have call predecessors, (98), 82 states have call successors, (98) [2022-10-16 17:46:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 769 transitions. [2022-10-16 17:46:03,046 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 769 transitions. Word has length 163 [2022-10-16 17:46:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:03,047 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 769 transitions. [2022-10-16 17:46:03,047 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 17:46:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 769 transitions. [2022-10-16 17:46:03,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-10-16 17:46:03,050 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:03,050 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 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 17:46:03,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-16 17:46:03,051 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:03,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:03,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1743217885, now seen corresponding path program 1 times [2022-10-16 17:46:03,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:03,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371744330] [2022-10-16 17:46:03,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:03,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-10-16 17:46:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-10-16 17:46:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2022-10-16 17:46:03,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371744330] [2022-10-16 17:46:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371744330] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431743478] [2022-10-16 17:46:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:03,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:03,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:03,244 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 17:46:03,270 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 17:46:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:03,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 54 conjunts are in the unsatisfiable core [2022-10-16 17:46:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:46:04,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:04,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431743478] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:04,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:04,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4] total 58 [2022-10-16 17:46:04,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352276968] [2022-10-16 17:46:04,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:04,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-10-16 17:46:04,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-10-16 17:46:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=2880, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:04,541 INFO L87 Difference]: Start difference. First operand 635 states and 769 transitions. Second operand has 55 states, 54 states have (on average 2.8333333333333335) internal successors, (153), 29 states have internal predecessors, (153), 27 states have call successors, (30), 27 states have call predecessors, (30), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:46:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:06,888 INFO L93 Difference]: Finished difference Result 3341 states and 4394 transitions. [2022-10-16 17:46:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-10-16 17:46:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.8333333333333335) internal successors, (153), 29 states have internal predecessors, (153), 27 states have call successors, (30), 27 states have call predecessors, (30), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 192 [2022-10-16 17:46:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:06,911 INFO L225 Difference]: With dead ends: 3341 [2022-10-16 17:46:06,911 INFO L226 Difference]: Without dead ends: 2727 [2022-10-16 17:46:06,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3339 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1862, Invalid=9480, Unknown=0, NotChecked=0, Total=11342 [2022-10-16 17:46:06,928 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1228 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:06,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 549 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:46:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-10-16 17:46:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2681. [2022-10-16 17:46:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2141 states have (on average 1.165810368986455) internal successors, (2496), 2129 states have internal predecessors, (2496), 341 states have call successors, (341), 163 states have call predecessors, (341), 195 states have return successors, (467), 388 states have call predecessors, (467), 340 states have call successors, (467) [2022-10-16 17:46:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 3304 transitions. [2022-10-16 17:46:07,093 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 3304 transitions. Word has length 192 [2022-10-16 17:46:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:07,093 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 3304 transitions. [2022-10-16 17:46:07,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.8333333333333335) internal successors, (153), 29 states have internal predecessors, (153), 27 states have call successors, (30), 27 states have call predecessors, (30), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:46:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 3304 transitions. [2022-10-16 17:46:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-10-16 17:46:07,096 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:07,097 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 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 17:46:07,138 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 17:46:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:46:07,311 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash 625782759, now seen corresponding path program 2 times [2022-10-16 17:46:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:07,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772087350] [2022-10-16 17:46:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:07,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-16 17:46:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-10-16 17:46:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-10-16 17:46:07,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772087350] [2022-10-16 17:46:07,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772087350] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871600197] [2022-10-16 17:46:07,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:07,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:07,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:07,504 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 17:46:07,532 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 17:46:07,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:07,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:07,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 52 conjunts are in the unsatisfiable core [2022-10-16 17:46:07,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 124 proven. 816 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:08,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 0 proven. 939 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:09,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871600197] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:09,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:09,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 53, 53] total 57 [2022-10-16 17:46:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406935750] [2022-10-16 17:46:09,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:09,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-16 17:46:09,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-16 17:46:09,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=2802, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 17:46:09,933 INFO L87 Difference]: Start difference. First operand 2681 states and 3304 transitions. Second operand has 57 states, 56 states have (on average 3.107142857142857) internal successors, (174), 33 states have internal predecessors, (174), 28 states have call successors, (34), 26 states have call predecessors, (34), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:46:12,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:12,416 INFO L93 Difference]: Finished difference Result 5534 states and 7118 transitions. [2022-10-16 17:46:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 17:46:12,417 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 3.107142857142857) internal successors, (174), 33 states have internal predecessors, (174), 28 states have call successors, (34), 26 states have call predecessors, (34), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 180 [2022-10-16 17:46:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:12,437 INFO L225 Difference]: With dead ends: 5534 [2022-10-16 17:46:12,438 INFO L226 Difference]: Without dead ends: 2992 [2022-10-16 17:46:12,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 290 SyntacticMatches, 50 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=912, Invalid=5730, Unknown=0, NotChecked=0, Total=6642 [2022-10-16 17:46:12,458 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 728 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:12,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3031 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 17:46:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2022-10-16 17:46:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2887. [2022-10-16 17:46:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2308 states have (on average 1.160311958405546) internal successors, (2678), 2287 states have internal predecessors, (2678), 373 states have call successors, (373), 171 states have call predecessors, (373), 202 states have return successors, (547), 428 states have call predecessors, (547), 372 states have call successors, (547) [2022-10-16 17:46:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3598 transitions. [2022-10-16 17:46:12,626 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3598 transitions. Word has length 180 [2022-10-16 17:46:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:12,629 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3598 transitions. [2022-10-16 17:46:12,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 3.107142857142857) internal successors, (174), 33 states have internal predecessors, (174), 28 states have call successors, (34), 26 states have call predecessors, (34), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:46:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3598 transitions. [2022-10-16 17:46:12,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-10-16 17:46:12,632 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:12,632 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 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 17:46:12,672 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 17:46:12,847 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,SelfDestructingSolverStorable17 [2022-10-16 17:46:12,848 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash -830948464, now seen corresponding path program 1 times [2022-10-16 17:46:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:12,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051798636] [2022-10-16 17:46:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:12,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-16 17:46:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-10-16 17:46:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 795 proven. 159 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:46:15,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:15,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051798636] [2022-10-16 17:46:15,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051798636] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:15,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605815146] [2022-10-16 17:46:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:15,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:15,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:15,010 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 17:46:15,012 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 17:46:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 52 conjunts are in the unsatisfiable core [2022-10-16 17:46:15,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 796 proven. 156 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:15,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 796 proven. 156 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:16,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605815146] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:16,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:16,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 53, 53] total 58 [2022-10-16 17:46:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808168826] [2022-10-16 17:46:16,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:16,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:46:16,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:16,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:46:16,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2914, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:16,404 INFO L87 Difference]: Start difference. First operand 2887 states and 3598 transitions. Second operand has 58 states, 57 states have (on average 2.8421052631578947) internal successors, (162), 34 states have internal predecessors, (162), 28 states have call successors, (30), 25 states have call predecessors, (30), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:46:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:20,422 INFO L93 Difference]: Finished difference Result 6083 states and 8066 transitions. [2022-10-16 17:46:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-10-16 17:46:20,423 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.8421052631578947) internal successors, (162), 34 states have internal predecessors, (162), 28 states have call successors, (30), 25 states have call predecessors, (30), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 181 [2022-10-16 17:46:20,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:20,448 INFO L225 Difference]: With dead ends: 6083 [2022-10-16 17:46:20,449 INFO L226 Difference]: Without dead ends: 3310 [2022-10-16 17:46:20,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 361 SyntacticMatches, 50 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7016 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3151, Invalid=14405, Unknown=0, NotChecked=0, Total=17556 [2022-10-16 17:46:20,478 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1826 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 4476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:20,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 586 Invalid, 4476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 17:46:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2022-10-16 17:46:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3064. [2022-10-16 17:46:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2441 states have (on average 1.1601802539942647) internal successors, (2832), 2434 states have internal predecessors, (2832), 400 states have call successors, (400), 183 states have call predecessors, (400), 219 states have return successors, (579), 446 states have call predecessors, (579), 399 states have call successors, (579) [2022-10-16 17:46:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 3811 transitions. [2022-10-16 17:46:20,708 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 3811 transitions. Word has length 181 [2022-10-16 17:46:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:20,709 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 3811 transitions. [2022-10-16 17:46:20,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.8421052631578947) internal successors, (162), 34 states have internal predecessors, (162), 28 states have call successors, (30), 25 states have call predecessors, (30), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:46:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 3811 transitions. [2022-10-16 17:46:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-10-16 17:46:20,713 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:20,713 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-10-16 17:46:20,751 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 17:46:20,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:20,928 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash -490691545, now seen corresponding path program 1 times [2022-10-16 17:46:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:20,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642435005] [2022-10-16 17:46:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2022-10-16 17:46:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:21,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642435005] [2022-10-16 17:46:21,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642435005] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:21,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:21,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:21,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898808517] [2022-10-16 17:46:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:21,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:21,118 INFO L87 Difference]: Start difference. First operand 3064 states and 3811 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 17:46:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:21,237 INFO L93 Difference]: Finished difference Result 3106 states and 3868 transitions. [2022-10-16 17:46:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:21,238 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 176 [2022-10-16 17:46:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:21,259 INFO L225 Difference]: With dead ends: 3106 [2022-10-16 17:46:21,260 INFO L226 Difference]: Without dead ends: 3102 [2022-10-16 17:46:21,262 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 17:46:21,263 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:21,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-10-16 17:46:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3054. [2022-10-16 17:46:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 2431 states have (on average 1.1608391608391608) internal successors, (2822), 2433 states have internal predecessors, (2822), 400 states have call successors, (400), 183 states have call predecessors, (400), 219 states have return successors, (573), 437 states have call predecessors, (573), 399 states have call successors, (573) [2022-10-16 17:46:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 3795 transitions. [2022-10-16 17:46:21,451 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 3795 transitions. Word has length 176 [2022-10-16 17:46:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:21,452 INFO L495 AbstractCegarLoop]: Abstraction has 3054 states and 3795 transitions. [2022-10-16 17:46:21,452 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 17:46:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 3795 transitions. [2022-10-16 17:46:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-10-16 17:46:21,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:21,454 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 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 17:46:21,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 17:46:21,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash -479743897, now seen corresponding path program 1 times [2022-10-16 17:46:21,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:21,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054694730] [2022-10-16 17:46:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:21,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-10-16 17:46:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:21,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054694730] [2022-10-16 17:46:21,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054694730] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:21,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:21,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 17:46:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498404700] [2022-10-16 17:46:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:21,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 17:46:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 17:46:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:46:21,823 INFO L87 Difference]: Start difference. First operand 3054 states and 3795 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 17:46:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:22,026 INFO L93 Difference]: Finished difference Result 3406 states and 4308 transitions. [2022-10-16 17:46:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:46:22,027 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 176 [2022-10-16 17:46:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:22,049 INFO L225 Difference]: With dead ends: 3406 [2022-10-16 17:46:22,049 INFO L226 Difference]: Without dead ends: 3405 [2022-10-16 17:46:22,051 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 17:46:22,052 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:22,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 326 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2022-10-16 17:46:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3214. [2022-10-16 17:46:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 2563 states have (on average 1.1525555989075302) internal successors, (2954), 2548 states have internal predecessors, (2954), 414 states have call successors, (414), 183 states have call predecessors, (414), 233 states have return successors, (664), 482 states have call predecessors, (664), 413 states have call successors, (664) [2022-10-16 17:46:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 4032 transitions. [2022-10-16 17:46:22,240 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 4032 transitions. Word has length 176 [2022-10-16 17:46:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:22,240 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 4032 transitions. [2022-10-16 17:46:22,240 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 17:46:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 4032 transitions. [2022-10-16 17:46:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-10-16 17:46:22,243 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:22,243 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-10-16 17:46:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-16 17:46:22,243 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1987158822, now seen corresponding path program 1 times [2022-10-16 17:46:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:22,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345065556] [2022-10-16 17:46:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2022-10-16 17:46:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345065556] [2022-10-16 17:46:22,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345065556] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:22,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:22,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038927906] [2022-10-16 17:46:22,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:22,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:22,412 INFO L87 Difference]: Start difference. First operand 3214 states and 4032 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 17:46:22,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:22,544 INFO L93 Difference]: Finished difference Result 3285 states and 4131 transitions. [2022-10-16 17:46:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:22,545 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 177 [2022-10-16 17:46:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:22,571 INFO L225 Difference]: With dead ends: 3285 [2022-10-16 17:46:22,571 INFO L226 Difference]: Without dead ends: 3281 [2022-10-16 17:46:22,575 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 17:46:22,577 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:22,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 150 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-10-16 17:46:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3180. [2022-10-16 17:46:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 2536 states have (on average 1.1597003154574133) internal successors, (2941), 2524 states have internal predecessors, (2941), 407 states have call successors, (407), 183 states have call predecessors, (407), 233 states have return successors, (649), 472 states have call predecessors, (649), 406 states have call successors, (649) [2022-10-16 17:46:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 3997 transitions. [2022-10-16 17:46:22,790 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 3997 transitions. Word has length 177 [2022-10-16 17:46:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:22,792 INFO L495 AbstractCegarLoop]: Abstraction has 3180 states and 3997 transitions. [2022-10-16 17:46:22,793 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 17:46:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 3997 transitions. [2022-10-16 17:46:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-10-16 17:46:22,797 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:22,797 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 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 17:46:22,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-16 17:46:22,797 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:22,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 424681697, now seen corresponding path program 1 times [2022-10-16 17:46:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:22,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744266308] [2022-10-16 17:46:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:46:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-10-16 17:46:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 10 proven. 906 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:46:24,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:24,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744266308] [2022-10-16 17:46:24,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744266308] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:24,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351461684] [2022-10-16 17:46:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:24,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:24,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:24,658 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 17:46:24,685 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 17:46:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:24,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:46:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 60 proven. 872 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:46:25,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 13 proven. 909 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 17:46:26,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351461684] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:26,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 51, 51] total 58 [2022-10-16 17:46:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173727435] [2022-10-16 17:46:26,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:46:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:46:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2914, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:26,100 INFO L87 Difference]: Start difference. First operand 3180 states and 3997 transitions. Second operand has 58 states, 57 states have (on average 3.245614035087719) internal successors, (185), 36 states have internal predecessors, (185), 29 states have call successors, (35), 24 states have call predecessors, (35), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:28,231 INFO L93 Difference]: Finished difference Result 6333 states and 8318 transitions. [2022-10-16 17:46:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 17:46:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.245614035087719) internal successors, (185), 36 states have internal predecessors, (185), 29 states have call successors, (35), 24 states have call predecessors, (35), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 189 [2022-10-16 17:46:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:28,257 INFO L225 Difference]: With dead ends: 6333 [2022-10-16 17:46:28,258 INFO L226 Difference]: Without dead ends: 3316 [2022-10-16 17:46:28,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 363 SyntacticMatches, 47 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3101 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=936, Invalid=5870, Unknown=0, NotChecked=0, Total=6806 [2022-10-16 17:46:28,276 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 926 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:28,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 2188 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:46:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-10-16 17:46:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3184. [2022-10-16 17:46:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2539 states have (on average 1.1595116187475385) internal successors, (2944), 2527 states have internal predecessors, (2944), 408 states have call successors, (408), 183 states have call predecessors, (408), 233 states have return successors, (622), 473 states have call predecessors, (622), 407 states have call successors, (622) [2022-10-16 17:46:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 3974 transitions. [2022-10-16 17:46:28,457 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 3974 transitions. Word has length 189 [2022-10-16 17:46:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:28,457 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 3974 transitions. [2022-10-16 17:46:28,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.245614035087719) internal successors, (185), 36 states have internal predecessors, (185), 29 states have call successors, (35), 24 states have call predecessors, (35), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 3974 transitions. [2022-10-16 17:46:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-16 17:46:28,460 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:28,461 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 4, 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 17:46:28,504 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 17:46:28,675 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 17:46:28,676 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash -22977778, now seen corresponding path program 1 times [2022-10-16 17:46:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:28,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536295880] [2022-10-16 17:46:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:28,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:46:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-10-16 17:46:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 17 proven. 913 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:30,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:30,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536295880] [2022-10-16 17:46:30,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536295880] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:30,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571981592] [2022-10-16 17:46:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:30,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:30,138 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 17:46:30,163 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 17:46:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:46:30,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 17 proven. 913 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:30,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 17 proven. 913 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:31,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571981592] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:31,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:31,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 51 [2022-10-16 17:46:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168230581] [2022-10-16 17:46:31,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-16 17:46:31,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-16 17:46:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=2216, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 17:46:31,363 INFO L87 Difference]: Start difference. First operand 3184 states and 3974 transitions. Second operand has 51 states, 50 states have (on average 3.08) internal successors, (154), 29 states have internal predecessors, (154), 24 states have call successors, (28), 23 states have call predecessors, (28), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 17:46:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:33,322 INFO L93 Difference]: Finished difference Result 6245 states and 7997 transitions. [2022-10-16 17:46:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 17:46:33,323 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.08) internal successors, (154), 29 states have internal predecessors, (154), 24 states have call successors, (28), 23 states have call predecessors, (28), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 190 [2022-10-16 17:46:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:33,361 INFO L225 Difference]: With dead ends: 6245 [2022-10-16 17:46:33,362 INFO L226 Difference]: Without dead ends: 3231 [2022-10-16 17:46:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 365 SyntacticMatches, 46 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2566 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=791, Invalid=4611, Unknown=0, NotChecked=0, Total=5402 [2022-10-16 17:46:33,388 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 745 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:33,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 2502 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-16 17:46:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2022-10-16 17:46:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3184. [2022-10-16 17:46:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2539 states have (on average 1.159117762898779) internal successors, (2943), 2527 states have internal predecessors, (2943), 408 states have call successors, (408), 183 states have call predecessors, (408), 233 states have return successors, (615), 473 states have call predecessors, (615), 407 states have call successors, (615) [2022-10-16 17:46:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 3966 transitions. [2022-10-16 17:46:33,567 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 3966 transitions. Word has length 190 [2022-10-16 17:46:33,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:33,568 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 3966 transitions. [2022-10-16 17:46:33,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.08) internal successors, (154), 29 states have internal predecessors, (154), 24 states have call successors, (28), 23 states have call predecessors, (28), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 17:46:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 3966 transitions. [2022-10-16 17:46:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-10-16 17:46:33,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:33,571 INFO L195 NwaCegarLoop]: trace histogram [16, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:33,609 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 17:46:33,784 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 17:46:33,785 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash -273437198, now seen corresponding path program 1 times [2022-10-16 17:46:33,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:33,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220991157] [2022-10-16 17:46:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 740 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 17:46:35,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:35,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220991157] [2022-10-16 17:46:35,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220991157] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:35,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388779590] [2022-10-16 17:46:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:35,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:35,357 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:35,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 17:46:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:46:35,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-10-16 17:46:35,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:35,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388779590] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:35,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:35,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [53] total 63 [2022-10-16 17:46:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380062061] [2022-10-16 17:46:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:35,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:46:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:46:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3529, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 17:46:35,814 INFO L87 Difference]: Start difference. First operand 3184 states and 3966 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:36,046 INFO L93 Difference]: Finished difference Result 3815 states and 5014 transitions. [2022-10-16 17:46:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:46:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 194 [2022-10-16 17:46:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:36,062 INFO L225 Difference]: With dead ends: 3815 [2022-10-16 17:46:36,062 INFO L226 Difference]: Without dead ends: 3814 [2022-10-16 17:46:36,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=377, Invalid=3529, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 17:46:36,065 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:36,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 325 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2022-10-16 17:46:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3549. [2022-10-16 17:46:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2832 states have (on average 1.1500706214689265) internal successors, (3257), 2803 states have internal predecessors, (3257), 444 states have call successors, (444), 183 states have call predecessors, (444), 269 states have return successors, (912), 562 states have call predecessors, (912), 443 states have call successors, (912) [2022-10-16 17:46:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4613 transitions. [2022-10-16 17:46:36,267 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4613 transitions. Word has length 194 [2022-10-16 17:46:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 3549 states and 4613 transitions. [2022-10-16 17:46:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4613 transitions. [2022-10-16 17:46:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-10-16 17:46:36,271 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:36,271 INFO L195 NwaCegarLoop]: trace histogram [16, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:36,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-10-16 17:46:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:36,486 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:36,487 INFO L85 PathProgramCache]: Analyzing trace with hash 113381551, now seen corresponding path program 1 times [2022-10-16 17:46:36,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:36,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949996189] [2022-10-16 17:46:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 740 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 17:46:38,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:38,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949996189] [2022-10-16 17:46:38,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949996189] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:38,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565472165] [2022-10-16 17:46:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:38,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:38,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:38,120 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:38,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 17:46:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:46:38,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2022-10-16 17:46:38,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2022-10-16 17:46:38,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565472165] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:38,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:38,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 8, 7] total 65 [2022-10-16 17:46:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302516272] [2022-10-16 17:46:38,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:38,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-16 17:46:38,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-16 17:46:38,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3777, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 17:46:38,789 INFO L87 Difference]: Start difference. First operand 3549 states and 4613 transitions. Second operand has 65 states, 64 states have (on average 2.921875) internal successors, (187), 42 states have internal predecessors, (187), 30 states have call successors, (35), 24 states have call predecessors, (35), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:49,931 INFO L93 Difference]: Finished difference Result 7597 states and 10739 transitions. [2022-10-16 17:46:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2022-10-16 17:46:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.921875) internal successors, (187), 42 states have internal predecessors, (187), 30 states have call successors, (35), 24 states have call predecessors, (35), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 195 [2022-10-16 17:46:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:49,950 INFO L225 Difference]: With dead ends: 7597 [2022-10-16 17:46:49,951 INFO L226 Difference]: Without dead ends: 4145 [2022-10-16 17:46:49,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 437 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26077 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=9454, Invalid=61568, Unknown=0, NotChecked=0, Total=71022 [2022-10-16 17:46:49,975 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1831 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 8706 mSolverCounterSat, 1255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 9961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Valid, 8706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:49,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 553 Invalid, 9961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1255 Valid, 8706 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-10-16 17:46:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2022-10-16 17:46:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3555. [2022-10-16 17:46:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 2831 states have (on average 1.1462380784175203) internal successors, (3245), 2808 states have internal predecessors, (3245), 445 states have call successors, (445), 183 states have call predecessors, (445), 275 states have return successors, (1014), 563 states have call predecessors, (1014), 444 states have call successors, (1014) [2022-10-16 17:46:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4704 transitions. [2022-10-16 17:46:50,195 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4704 transitions. Word has length 195 [2022-10-16 17:46:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:50,196 INFO L495 AbstractCegarLoop]: Abstraction has 3555 states and 4704 transitions. [2022-10-16 17:46:50,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 2.921875) internal successors, (187), 42 states have internal predecessors, (187), 30 states have call successors, (35), 24 states have call predecessors, (35), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:50,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4704 transitions. [2022-10-16 17:46:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-10-16 17:46:50,199 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:50,200 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 4, 4, 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 17:46:50,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 17:46:50,415 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -105689222, now seen corresponding path program 1 times [2022-10-16 17:46:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:50,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141215718] [2022-10-16 17:46:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:46:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-10-16 17:46:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2022-10-16 17:46:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:50,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141215718] [2022-10-16 17:46:50,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141215718] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:50,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101437037] [2022-10-16 17:46:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:50,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:50,909 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:50,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 17:46:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:50,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:46:50,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2022-10-16 17:46:51,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2022-10-16 17:46:51,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101437037] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:51,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:51,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-10-16 17:46:51,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233616650] [2022-10-16 17:46:51,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:51,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:46:51,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:51,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:46:51,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:46:51,704 INFO L87 Difference]: Start difference. First operand 3555 states and 4704 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 17:46:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:52,282 INFO L93 Difference]: Finished difference Result 5368 states and 8395 transitions. [2022-10-16 17:46:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-10-16 17:46:52,283 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 209 [2022-10-16 17:46:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:52,309 INFO L225 Difference]: With dead ends: 5368 [2022-10-16 17:46:52,309 INFO L226 Difference]: Without dead ends: 5366 [2022-10-16 17:46:52,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 417 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=1510, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:46:52,314 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 66 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:52,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 625 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2022-10-16 17:46:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 4374. [2022-10-16 17:46:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 3478 states have (on average 1.1377228292121908) internal successors, (3957), 3439 states have internal predecessors, (3957), 537 states have call successors, (537), 183 states have call predecessors, (537), 355 states have return successors, (2241), 751 states have call predecessors, (2241), 536 states have call successors, (2241) [2022-10-16 17:46:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 6735 transitions. [2022-10-16 17:46:52,626 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 6735 transitions. Word has length 209 [2022-10-16 17:46:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:52,627 INFO L495 AbstractCegarLoop]: Abstraction has 4374 states and 6735 transitions. [2022-10-16 17:46:52,627 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 17:46:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 6735 transitions. [2022-10-16 17:46:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-10-16 17:46:52,630 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:52,630 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 4, 4, 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 17:46:52,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:52,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 17:46:52,846 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1018601485, now seen corresponding path program 1 times [2022-10-16 17:46:52,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966363859] [2022-10-16 17:46:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:52,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:46:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-10-16 17:46:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2022-10-16 17:46:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:53,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966363859] [2022-10-16 17:46:53,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966363859] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:53,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711850319] [2022-10-16 17:46:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:53,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:53,447 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:53,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 17:46:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:46:53,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2022-10-16 17:46:53,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2022-10-16 17:46:54,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711850319] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:54,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:54,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-10-16 17:46:54,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421195738] [2022-10-16 17:46:54,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-16 17:46:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-16 17:46:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-10-16 17:46:54,153 INFO L87 Difference]: Start difference. First operand 4374 states and 6735 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 17:46:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:55,087 INFO L93 Difference]: Finished difference Result 12193 states and 22903 transitions. [2022-10-16 17:46:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:46:55,087 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 210 [2022-10-16 17:46:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:55,157 INFO L225 Difference]: With dead ends: 12193 [2022-10-16 17:46:55,158 INFO L226 Difference]: Without dead ends: 12186 [2022-10-16 17:46:55,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 419 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=369, Invalid=1983, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 17:46:55,166 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 73 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:55,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 651 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12186 states. [2022-10-16 17:46:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12186 to 8717. [2022-10-16 17:46:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8717 states, 6952 states have (on average 1.1301783659378597) internal successors, (7857), 6756 states have internal predecessors, (7857), 943 states have call successors, (943), 183 states have call predecessors, (943), 818 states have return successors, (7509), 1777 states have call predecessors, (7509), 942 states have call successors, (7509) [2022-10-16 17:46:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 16309 transitions. [2022-10-16 17:46:55,950 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 16309 transitions. Word has length 210 [2022-10-16 17:46:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:55,950 INFO L495 AbstractCegarLoop]: Abstraction has 8717 states and 16309 transitions. [2022-10-16 17:46:55,951 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 17:46:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 16309 transitions. [2022-10-16 17:46:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-10-16 17:46:55,958 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:55,959 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 15, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:55,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:56,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 17:46:56,174 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:56,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1658340320, now seen corresponding path program 1 times [2022-10-16 17:46:56,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:56,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324524241] [2022-10-16 17:46:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:56,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:46:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-10-16 17:46:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 66 proven. 1117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 17:46:57,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:57,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324524241] [2022-10-16 17:46:57,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324524241] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:57,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577446274] [2022-10-16 17:46:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:57,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:57,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:57,961 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:57,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 17:46:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:46:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 66 proven. 1117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 17:46:58,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 66 proven. 1117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 17:46:59,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577446274] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:59,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:59,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 54 [2022-10-16 17:46:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189713237] [2022-10-16 17:46:59,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:59,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 17:46:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:59,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 17:46:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2524, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:46:59,318 INFO L87 Difference]: Start difference. First operand 8717 states and 16309 transitions. Second operand has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 33 states have internal predecessors, (175), 28 states have call successors, (32), 22 states have call predecessors, (32), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-10-16 17:47:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:02,116 INFO L93 Difference]: Finished difference Result 19148 states and 39004 transitions. [2022-10-16 17:47:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:47:02,116 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 33 states have internal predecessors, (175), 28 states have call successors, (32), 22 states have call predecessors, (32), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 243 [2022-10-16 17:47:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:02,233 INFO L225 Difference]: With dead ends: 19148 [2022-10-16 17:47:02,234 INFO L226 Difference]: Without dead ends: 10608 [2022-10-16 17:47:02,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 481 SyntacticMatches, 45 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2626 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=791, Invalid=4909, Unknown=0, NotChecked=0, Total=5700 [2022-10-16 17:47:02,330 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 671 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 3536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:02,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 3234 Invalid, 3536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:47:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10608 states. [2022-10-16 17:47:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10608 to 10443. [2022-10-16 17:47:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10443 states, 8335 states have (on average 1.1241751649670066) internal successors, (9370), 8079 states have internal predecessors, (9370), 1100 states have call successors, (1100), 198 states have call predecessors, (1100), 1004 states have return successors, (10418), 2165 states have call predecessors, (10418), 1099 states have call successors, (10418) [2022-10-16 17:47:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 20888 transitions. [2022-10-16 17:47:03,544 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 20888 transitions. Word has length 243 [2022-10-16 17:47:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:03,545 INFO L495 AbstractCegarLoop]: Abstraction has 10443 states and 20888 transitions. [2022-10-16 17:47:03,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 33 states have internal predecessors, (175), 28 states have call successors, (32), 22 states have call predecessors, (32), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-10-16 17:47:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 20888 transitions. [2022-10-16 17:47:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-10-16 17:47:03,551 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:03,551 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 15, 14, 14, 14, 14, 13, 13, 13, 13, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:03,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:03,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 17:47:03,765 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -237481582, now seen corresponding path program 2 times [2022-10-16 17:47:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:03,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292113788] [2022-10-16 17:47:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:03,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:47:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-10-16 17:47:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:47:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 689 proven. 601 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-10-16 17:47:05,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292113788] [2022-10-16 17:47:05,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292113788] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713795451] [2022-10-16 17:47:05,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:47:05,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:05,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:05,507 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:05,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 17:47:05,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:47:05,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:05,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:47:05,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 715 proven. 605 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-10-16 17:47:05,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 715 proven. 606 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-10-16 17:47:07,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713795451] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:07,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:07,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 59 [2022-10-16 17:47:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170655079] [2022-10-16 17:47:07,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:07,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-10-16 17:47:07,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-10-16 17:47:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=3077, Unknown=0, NotChecked=0, Total=3422 [2022-10-16 17:47:07,230 INFO L87 Difference]: Start difference. First operand 10443 states and 20888 transitions. Second operand has 59 states, 58 states have (on average 3.5) internal successors, (203), 38 states have internal predecessors, (203), 30 states have call successors, (37), 22 states have call predecessors, (37), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2022-10-16 17:47:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:13,729 INFO L93 Difference]: Finished difference Result 21048 states and 48653 transitions. [2022-10-16 17:47:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-10-16 17:47:13,730 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.5) internal successors, (203), 38 states have internal predecessors, (203), 30 states have call successors, (37), 22 states have call predecessors, (37), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 262 [2022-10-16 17:47:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:13,800 INFO L225 Difference]: With dead ends: 21048 [2022-10-16 17:47:13,800 INFO L226 Difference]: Without dead ends: 10759 [2022-10-16 17:47:13,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 528 SyntacticMatches, 46 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11552 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4474, Invalid=25628, Unknown=0, NotChecked=0, Total=30102 [2022-10-16 17:47:13,926 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 3198 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 4587 mSolverCounterSat, 1654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3198 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 6241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1654 IncrementalHoareTripleChecker+Valid, 4587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:13,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3198 Valid, 668 Invalid, 6241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1654 Valid, 4587 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-16 17:47:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2022-10-16 17:47:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 9818. [2022-10-16 17:47:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9818 states, 7843 states have (on average 1.1276297335203367) internal successors, (8844), 7600 states have internal predecessors, (8844), 1034 states have call successors, (1034), 216 states have call predecessors, (1034), 937 states have return successors, (7072), 2001 states have call predecessors, (7072), 1033 states have call successors, (7072) [2022-10-16 17:47:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9818 states to 9818 states and 16950 transitions. [2022-10-16 17:47:14,863 INFO L78 Accepts]: Start accepts. Automaton has 9818 states and 16950 transitions. Word has length 262 [2022-10-16 17:47:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:14,864 INFO L495 AbstractCegarLoop]: Abstraction has 9818 states and 16950 transitions. [2022-10-16 17:47:14,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.5) internal successors, (203), 38 states have internal predecessors, (203), 30 states have call successors, (37), 22 states have call predecessors, (37), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2022-10-16 17:47:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 9818 states and 16950 transitions. [2022-10-16 17:47:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-10-16 17:47:14,869 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:14,869 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 16, 16, 14, 14, 14, 14, 13, 13, 13, 13, 8, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 17:47:14,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:15,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:15,082 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:15,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:15,083 INFO L85 PathProgramCache]: Analyzing trace with hash -915590142, now seen corresponding path program 3 times [2022-10-16 17:47:15,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:15,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650107181] [2022-10-16 17:47:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:15,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:47:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-10-16 17:47:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1471 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2022-10-16 17:47:16,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:16,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650107181] [2022-10-16 17:47:16,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650107181] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:16,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880953417] [2022-10-16 17:47:16,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:47:16,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:16,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:16,315 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:16,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 17:47:16,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:47:16,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:16,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:47:16,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1471 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2022-10-16 17:47:16,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1471 backedges. 74 proven. 51 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2022-10-16 17:47:17,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880953417] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:17,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:17,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2022-10-16 17:47:17,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104232889] [2022-10-16 17:47:17,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:17,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-16 17:47:17,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:17,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-16 17:47:17,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:47:17,888 INFO L87 Difference]: Start difference. First operand 9818 states and 16950 transitions. Second operand has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-10-16 17:47:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:19,166 INFO L93 Difference]: Finished difference Result 18227 states and 38980 transitions. [2022-10-16 17:47:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-16 17:47:19,167 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 262 [2022-10-16 17:47:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:19,314 INFO L225 Difference]: With dead ends: 18227 [2022-10-16 17:47:19,314 INFO L226 Difference]: Without dead ends: 18225 [2022-10-16 17:47:19,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 528 SyntacticMatches, 16 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=508, Invalid=3152, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:47:19,349 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 72 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:19,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 774 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:47:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18225 states. [2022-10-16 17:47:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18225 to 12446. [2022-10-16 17:47:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12446 states, 9949 states have (on average 1.1052367072067544) internal successors, (10996), 9604 states have internal predecessors, (10996), 1276 states have call successors, (1276), 216 states have call predecessors, (1276), 1217 states have return successors, (13257), 2625 states have call predecessors, (13257), 1275 states have call successors, (13257) [2022-10-16 17:47:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12446 states to 12446 states and 25529 transitions. [2022-10-16 17:47:21,056 INFO L78 Accepts]: Start accepts. Automaton has 12446 states and 25529 transitions. Word has length 262 [2022-10-16 17:47:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:21,056 INFO L495 AbstractCegarLoop]: Abstraction has 12446 states and 25529 transitions. [2022-10-16 17:47:21,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-10-16 17:47:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12446 states and 25529 transitions. [2022-10-16 17:47:21,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-10-16 17:47:21,061 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:21,061 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 20, 19, 17, 17, 17, 17, 14, 14, 14, 14, 14, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:21,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-10-16 17:47:21,276 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:21,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1612340866, now seen corresponding path program 2 times [2022-10-16 17:47:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:21,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373038349] [2022-10-16 17:47:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:47:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-16 17:47:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-10-16 17:47:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:47:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-16 17:47:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 264 proven. 1602 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2022-10-16 17:47:23,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:23,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373038349] [2022-10-16 17:47:23,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373038349] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:23,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515792275] [2022-10-16 17:47:23,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:47:23,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:23,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:23,277 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:23,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 17:47:23,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:47:23,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:23,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:47:23,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 1507 proven. 723 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-10-16 17:47:25,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 637 proven. 1261 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2022-10-16 17:47:28,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515792275] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:28,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:28,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 49, 51] total 103 [2022-10-16 17:47:28,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858282263] [2022-10-16 17:47:28,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:28,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-10-16 17:47:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-10-16 17:47:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=9784, Unknown=0, NotChecked=0, Total=10506 [2022-10-16 17:47:28,204 INFO L87 Difference]: Start difference. First operand 12446 states and 25529 transitions. Second operand has 103 states, 101 states have (on average 3.4257425742574257) internal successors, (346), 63 states have internal predecessors, (346), 54 states have call successors, (67), 42 states have call predecessors, (67), 9 states have return successors, (29), 15 states have call predecessors, (29), 14 states have call successors, (29) [2022-10-16 17:47:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:56,824 INFO L93 Difference]: Finished difference Result 67087 states and 301052 transitions. [2022-10-16 17:47:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2022-10-16 17:47:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 101 states have (on average 3.4257425742574257) internal successors, (346), 63 states have internal predecessors, (346), 54 states have call successors, (67), 42 states have call predecessors, (67), 9 states have return successors, (29), 15 states have call predecessors, (29), 14 states have call successors, (29) Word has length 357 [2022-10-16 17:47:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:57,718 INFO L225 Difference]: With dead ends: 67087 [2022-10-16 17:47:57,718 INFO L226 Difference]: Without dead ends: 54432 [2022-10-16 17:47:58,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 749 SyntacticMatches, 45 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39887 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=8061, Invalid=96591, Unknown=0, NotChecked=0, Total=104652 [2022-10-16 17:47:58,189 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 11841 mSDsluCounter, 4101 mSDsCounter, 0 mSdLazyCounter, 23270 mSolverCounterSat, 8778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11841 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 32048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8778 IncrementalHoareTripleChecker+Valid, 23270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:58,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11841 Valid, 4317 Invalid, 32048 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8778 Valid, 23270 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-10-16 17:47:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54432 states. [2022-10-16 17:48:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54432 to 50194. [2022-10-16 17:48:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50194 states, 40132 states have (on average 1.1379946177613873) internal successors, (45670), 38873 states have internal predecessors, (45670), 5185 states have call successors, (5185), 944 states have call predecessors, (5185), 4873 states have return successors, (118141), 10376 states have call predecessors, (118141), 5175 states have call successors, (118141) [2022-10-16 17:48:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50194 states to 50194 states and 168996 transitions. [2022-10-16 17:48:05,923 INFO L78 Accepts]: Start accepts. Automaton has 50194 states and 168996 transitions. Word has length 357 [2022-10-16 17:48:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:05,924 INFO L495 AbstractCegarLoop]: Abstraction has 50194 states and 168996 transitions. [2022-10-16 17:48:05,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 101 states have (on average 3.4257425742574257) internal successors, (346), 63 states have internal predecessors, (346), 54 states have call successors, (67), 42 states have call predecessors, (67), 9 states have return successors, (29), 15 states have call predecessors, (29), 14 states have call successors, (29) [2022-10-16 17:48:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 50194 states and 168996 transitions. [2022-10-16 17:48:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-10-16 17:48:05,929 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:05,930 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 20, 19, 16, 16, 16, 16, 15, 15, 15, 15, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 2, 1, 1, 1, 1] [2022-10-16 17:48:05,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-10-16 17:48:06,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:06,144 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:06,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -574313991, now seen corresponding path program 3 times [2022-10-16 17:48:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059016278] [2022-10-16 17:48:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:48:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-10-16 17:48:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:48:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 17:48:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:48:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 764 proven. 1029 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2022-10-16 17:48:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:08,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059016278] [2022-10-16 17:48:08,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059016278] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:08,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240222205] [2022-10-16 17:48:08,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:48:08,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:08,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:08,169 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:08,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 17:48:08,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 17:48:08,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:08,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:48:08,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 2171 trivial. 0 not checked. [2022-10-16 17:48:08,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:48:08,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240222205] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:48:08,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:48:08,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [48] total 52 [2022-10-16 17:48:08,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549585576] [2022-10-16 17:48:08,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:48:08,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:48:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:48:08,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=2337, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:48:08,389 INFO L87 Difference]: Start difference. First operand 50194 states and 168996 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-16 17:48:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:12,002 INFO L93 Difference]: Finished difference Result 69544 states and 257384 transitions. [2022-10-16 17:48:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:48:12,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 354 [2022-10-16 17:48:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:12,169 INFO L225 Difference]: With dead ends: 69544 [2022-10-16 17:48:12,170 INFO L226 Difference]: Without dead ends: 19537 [2022-10-16 17:48:13,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=2427, Unknown=0, NotChecked=0, Total=2756 [2022-10-16 17:48:13,452 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:13,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 83 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:48:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19537 states. [2022-10-16 17:48:14,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19537 to 19537. [2022-10-16 17:48:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19537 states, 15551 states have (on average 1.0744646646517908) internal successors, (16709), 15423 states have internal predecessors, (16709), 2425 states have call successors, (2425), 944 states have call predecessors, (2425), 1559 states have return successors, (17187), 3169 states have call predecessors, (17187), 2415 states have call successors, (17187) [2022-10-16 17:48:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19537 states to 19537 states and 36321 transitions. [2022-10-16 17:48:14,718 INFO L78 Accepts]: Start accepts. Automaton has 19537 states and 36321 transitions. Word has length 354 [2022-10-16 17:48:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:14,719 INFO L495 AbstractCegarLoop]: Abstraction has 19537 states and 36321 transitions. [2022-10-16 17:48:14,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-16 17:48:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19537 states and 36321 transitions. [2022-10-16 17:48:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-10-16 17:48:14,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:14,723 INFO L195 NwaCegarLoop]: trace histogram [24, 22, 21, 20, 16, 16, 16, 16, 16, 16, 16, 16, 14, 12, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1] [2022-10-16 17:48:14,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:14,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:14,933 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash 85945564, now seen corresponding path program 4 times [2022-10-16 17:48:14,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:14,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679984587] [2022-10-16 17:48:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:14,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:48:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-10-16 17:48:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 17:48:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 844 proven. 1152 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2022-10-16 17:48:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:17,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679984587] [2022-10-16 17:48:17,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679984587] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:17,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999461232] [2022-10-16 17:48:17,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:48:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:17,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:17,477 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:17,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 17:48:17,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:48:17,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:17,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-16 17:48:17,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 665 proven. 443 refuted. 0 times theorem prover too weak. 1586 trivial. 0 not checked. [2022-10-16 17:48:18,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2694 backedges. 665 proven. 469 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-10-16 17:48:20,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999461232] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:20,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:20,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17, 23] total 73 [2022-10-16 17:48:20,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300172637] [2022-10-16 17:48:20,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:20,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-10-16 17:48:20,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-10-16 17:48:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=4805, Unknown=0, NotChecked=0, Total=5256 [2022-10-16 17:48:20,279 INFO L87 Difference]: Start difference. First operand 19537 states and 36321 transitions. Second operand has 73 states, 72 states have (on average 4.055555555555555) internal successors, (292), 53 states have internal predecessors, (292), 47 states have call successors, (53), 21 states have call predecessors, (53), 12 states have return successors, (40), 14 states have call predecessors, (40), 27 states have call successors, (40) [2022-10-16 17:48:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:27,233 INFO L93 Difference]: Finished difference Result 34653 states and 69962 transitions. [2022-10-16 17:48:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-10-16 17:48:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 4.055555555555555) internal successors, (292), 53 states have internal predecessors, (292), 47 states have call successors, (53), 21 states have call predecessors, (53), 12 states have return successors, (40), 14 states have call predecessors, (40), 27 states have call successors, (40) Word has length 374 [2022-10-16 17:48:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:27,322 INFO L225 Difference]: With dead ends: 34653 [2022-10-16 17:48:27,322 INFO L226 Difference]: Without dead ends: 14944 [2022-10-16 17:48:27,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 788 SyntacticMatches, 11 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9656 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3961, Invalid=25451, Unknown=0, NotChecked=0, Total=29412 [2022-10-16 17:48:27,672 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2320 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 6064 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 7140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 6064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:27,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 715 Invalid, 7140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 6064 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-10-16 17:48:27,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14944 states. [2022-10-16 17:48:28,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14944 to 14036. [2022-10-16 17:48:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14036 states, 11207 states have (on average 1.081199250468457) internal successors, (12117), 11145 states have internal predecessors, (12117), 1814 states have call successors, (1814), 848 states have call predecessors, (1814), 1013 states have return successors, (6020), 2042 states have call predecessors, (6020), 1813 states have call successors, (6020) [2022-10-16 17:48:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14036 states to 14036 states and 19951 transitions. [2022-10-16 17:48:28,624 INFO L78 Accepts]: Start accepts. Automaton has 14036 states and 19951 transitions. Word has length 374 [2022-10-16 17:48:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:28,625 INFO L495 AbstractCegarLoop]: Abstraction has 14036 states and 19951 transitions. [2022-10-16 17:48:28,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 4.055555555555555) internal successors, (292), 53 states have internal predecessors, (292), 47 states have call successors, (53), 21 states have call predecessors, (53), 12 states have return successors, (40), 14 states have call predecessors, (40), 27 states have call successors, (40) [2022-10-16 17:48:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 14036 states and 19951 transitions. [2022-10-16 17:48:28,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-10-16 17:48:28,628 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:28,628 INFO L195 NwaCegarLoop]: trace histogram [24, 22, 20, 20, 17, 17, 17, 17, 15, 15, 15, 15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1] [2022-10-16 17:48:28,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:28,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:28,843 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:28,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1839461611, now seen corresponding path program 5 times [2022-10-16 17:48:28,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:28,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113208528] [2022-10-16 17:48:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:28,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:48:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-10-16 17:48:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 17:48:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 853 proven. 1130 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-10-16 17:48:30,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:30,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113208528] [2022-10-16 17:48:30,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113208528] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:30,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562231332] [2022-10-16 17:48:30,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:48:30,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:30,857 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:30,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 17:48:31,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-10-16 17:48:31,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:31,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 17:48:31,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 592 proven. 327 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-10-16 17:48:31,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 592 proven. 340 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2022-10-16 17:48:32,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562231332] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:32,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:32,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 15, 19] total 70 [2022-10-16 17:48:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669749014] [2022-10-16 17:48:32,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:32,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-10-16 17:48:32,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-10-16 17:48:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=4366, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 17:48:32,910 INFO L87 Difference]: Start difference. First operand 14036 states and 19951 transitions. Second operand has 70 states, 69 states have (on average 4.043478260869565) internal successors, (279), 50 states have internal predecessors, (279), 41 states have call successors, (51), 21 states have call predecessors, (51), 11 states have return successors, (36), 17 states have call predecessors, (36), 21 states have call successors, (36) [2022-10-16 17:48:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:39,308 INFO L93 Difference]: Finished difference Result 34218 states and 59208 transitions. [2022-10-16 17:48:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-10-16 17:48:39,309 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 4.043478260869565) internal successors, (279), 50 states have internal predecessors, (279), 41 states have call successors, (51), 21 states have call predecessors, (51), 11 states have return successors, (36), 17 states have call predecessors, (36), 21 states have call successors, (36) Word has length 373 [2022-10-16 17:48:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:39,567 INFO L225 Difference]: With dead ends: 34218 [2022-10-16 17:48:39,567 INFO L226 Difference]: Without dead ends: 20326 [2022-10-16 17:48:39,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 791 SyntacticMatches, 9 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9156 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3853, Invalid=23869, Unknown=0, NotChecked=0, Total=27722 [2022-10-16 17:48:39,688 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 2135 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 5536 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 6559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 5536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:39,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 798 Invalid, 6559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 5536 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-16 17:48:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20326 states. [2022-10-16 17:48:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20326 to 18915. [2022-10-16 17:48:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18915 states, 15099 states have (on average 1.0819921849129082) internal successors, (16337), 15053 states have internal predecessors, (16337), 2481 states have call successors, (2481), 1170 states have call predecessors, (2481), 1333 states have return successors, (10212), 2691 states have call predecessors, (10212), 2480 states have call successors, (10212) [2022-10-16 17:48:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18915 states to 18915 states and 29030 transitions. [2022-10-16 17:48:40,847 INFO L78 Accepts]: Start accepts. Automaton has 18915 states and 29030 transitions. Word has length 373 [2022-10-16 17:48:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:40,848 INFO L495 AbstractCegarLoop]: Abstraction has 18915 states and 29030 transitions. [2022-10-16 17:48:40,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 4.043478260869565) internal successors, (279), 50 states have internal predecessors, (279), 41 states have call successors, (51), 21 states have call predecessors, (51), 11 states have return successors, (36), 17 states have call predecessors, (36), 21 states have call successors, (36) [2022-10-16 17:48:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 18915 states and 29030 transitions. [2022-10-16 17:48:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-10-16 17:48:40,851 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:40,852 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 20, 19, 16, 16, 16, 16, 15, 15, 15, 15, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2022-10-16 17:48:40,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:41,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:41,065 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1670911877, now seen corresponding path program 6 times [2022-10-16 17:48:41,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:41,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671815004] [2022-10-16 17:48:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:41,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:48:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-10-16 17:48:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 2105 trivial. 0 not checked. [2022-10-16 17:48:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:43,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671815004] [2022-10-16 17:48:43,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671815004] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:43,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047760050] [2022-10-16 17:48:43,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:48:43,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:43,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:43,230 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:43,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 17:48:43,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-10-16 17:48:43,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:43,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 49 conjunts are in the unsatisfiable core [2022-10-16 17:48:43,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 2105 trivial. 0 not checked. [2022-10-16 17:48:43,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 218 proven. 155 refuted. 0 times theorem prover too weak. 2056 trivial. 0 not checked. [2022-10-16 17:48:46,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047760050] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:46,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:46,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2022-10-16 17:48:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611380362] [2022-10-16 17:48:46,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:46,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:48:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:46,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:48:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:48:46,869 INFO L87 Difference]: Start difference. First operand 18915 states and 29030 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-10-16 17:48:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:47,806 INFO L93 Difference]: Finished difference Result 19511 states and 30236 transitions. [2022-10-16 17:48:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 17:48:47,807 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 354 [2022-10-16 17:48:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:47,874 INFO L225 Difference]: With dead ends: 19511 [2022-10-16 17:48:47,874 INFO L226 Difference]: Without dead ends: 19509 [2022-10-16 17:48:47,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 724 SyntacticMatches, 33 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=2320, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:48:47,888 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 46 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:47,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 705 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:48:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19509 states. [2022-10-16 17:48:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19509 to 19095. [2022-10-16 17:48:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19095 states, 15251 states have (on average 1.078289948200118) internal successors, (16445), 15185 states have internal predecessors, (16445), 2481 states have call successors, (2481), 1170 states have call predecessors, (2481), 1361 states have return successors, (10599), 2739 states have call predecessors, (10599), 2480 states have call successors, (10599) [2022-10-16 17:48:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19095 states to 19095 states and 29525 transitions. [2022-10-16 17:48:49,041 INFO L78 Accepts]: Start accepts. Automaton has 19095 states and 29525 transitions. Word has length 354 [2022-10-16 17:48:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:49,042 INFO L495 AbstractCegarLoop]: Abstraction has 19095 states and 29525 transitions. [2022-10-16 17:48:49,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-10-16 17:48:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19095 states and 29525 transitions. [2022-10-16 17:48:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-10-16 17:48:49,047 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:49,047 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 27, 26, 22, 20, 20, 20, 20, 20, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 4, 1, 1, 1, 1] [2022-10-16 17:48:49,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:49,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-10-16 17:48:49,262 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1439602119, now seen corresponding path program 4 times [2022-10-16 17:48:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:49,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682187880] [2022-10-16 17:48:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:48:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:50,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-10-16 17:48:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5091 backedges. 269 proven. 2865 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2022-10-16 17:48:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:51,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682187880] [2022-10-16 17:48:51,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682187880] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:51,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281247031] [2022-10-16 17:48:51,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:48:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:51,666 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:51,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 17:48:51,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:48:51,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:51,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 17:48:51,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5091 backedges. 2874 proven. 236 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2022-10-16 17:48:52,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5091 backedges. 548 proven. 943 refuted. 0 times theorem prover too weak. 3600 trivial. 0 not checked. [2022-10-16 17:48:54,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281247031] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:54,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:54,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 15, 19] total 70 [2022-10-16 17:48:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614666720] [2022-10-16 17:48:54,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:54,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-10-16 17:48:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:54,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-10-16 17:48:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=4294, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 17:48:54,128 INFO L87 Difference]: Start difference. First operand 19095 states and 29525 transitions. Second operand has 70 states, 69 states have (on average 4.260869565217392) internal successors, (294), 51 states have internal predecessors, (294), 45 states have call successors, (55), 21 states have call predecessors, (55), 11 states have return successors, (41), 15 states have call predecessors, (41), 26 states have call successors, (41) [2022-10-16 17:48:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:58,603 INFO L93 Difference]: Finished difference Result 43493 states and 81662 transitions. [2022-10-16 17:48:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 17:48:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 4.260869565217392) internal successors, (294), 51 states have internal predecessors, (294), 45 states have call successors, (55), 21 states have call predecessors, (55), 11 states have return successors, (41), 15 states have call predecessors, (41), 26 states have call successors, (41) Word has length 525 [2022-10-16 17:48:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:58,731 INFO L225 Difference]: With dead ends: 43493 [2022-10-16 17:48:58,732 INFO L226 Difference]: Without dead ends: 24531 [2022-10-16 17:48:58,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1129 SyntacticMatches, 9 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2584 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1248, Invalid=8258, Unknown=0, NotChecked=0, Total=9506 [2022-10-16 17:48:58,840 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1002 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 3729 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 3729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:58,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 2201 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 3729 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-16 17:48:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24531 states. [2022-10-16 17:49:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24531 to 24319. [2022-10-16 17:49:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24319 states, 19418 states have (on average 1.0788958698115152) internal successors, (20950), 19361 states have internal predecessors, (20950), 3188 states have call successors, (3188), 1493 states have call predecessors, (3188), 1711 states have return successors, (16417), 3464 states have call predecessors, (16417), 3187 states have call successors, (16417) [2022-10-16 17:49:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24319 states to 24319 states and 40555 transitions. [2022-10-16 17:49:00,411 INFO L78 Accepts]: Start accepts. Automaton has 24319 states and 40555 transitions. Word has length 525 [2022-10-16 17:49:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:49:00,412 INFO L495 AbstractCegarLoop]: Abstraction has 24319 states and 40555 transitions. [2022-10-16 17:49:00,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 4.260869565217392) internal successors, (294), 51 states have internal predecessors, (294), 45 states have call successors, (55), 21 states have call predecessors, (55), 11 states have return successors, (41), 15 states have call predecessors, (41), 26 states have call successors, (41) [2022-10-16 17:49:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 24319 states and 40555 transitions. [2022-10-16 17:49:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-10-16 17:49:00,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:49:00,415 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 26, 25, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2022-10-16 17:49:00,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 17:49:00,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-10-16 17:49:00,617 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:49:00,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:49:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1212102080, now seen corresponding path program 5 times [2022-10-16 17:49:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:49:00,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503580263] [2022-10-16 17:49:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:49:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:49:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:49:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat