/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:46:27,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:46:27,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:46:27,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:46:27,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:46:27,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:46:27,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:46:27,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:46:27,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:46:27,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:46:27,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:46:27,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:46:27,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:46:27,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:46:27,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:46:27,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:46:27,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:46:27,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:46:27,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:46:27,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:46:27,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:46:27,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:46:27,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:46:27,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:46:27,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 17:46:27,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:46:27,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:46:27,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:46:27,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:46:27,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:46:27,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:46:27,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:46:27,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:46:27,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:46:27,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:46:27,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:46:27,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:46:27,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:46:27,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:46:27,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:46:27,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:46:27,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:46:27,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:46:27,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:46:27,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:46:27,479 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:46:27,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:46:27,480 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:46:27,480 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:46:27,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:46:27,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:46:27,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:46:27,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:46:27,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:46:27,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:46:27,482 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:46:27,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:46:27,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:46:27,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:46:27,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:46:27,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:46:27,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:46:27,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:46:27,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:46:27,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:46:27,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:46:27,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:46:27,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:46:27,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:46:27,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:46:27,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:46:27,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:46:28,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:46:28,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:46:28,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:46:28,029 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:46:28,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-10-16 17:46:28,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b411a206/d4e2131c196546f28f6318f858c0921a/FLAG7b8017362 [2022-10-16 17:46:28,784 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:46:28,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-10-16 17:46:28,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b411a206/d4e2131c196546f28f6318f858c0921a/FLAG7b8017362 [2022-10-16 17:46:29,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b411a206/d4e2131c196546f28f6318f858c0921a [2022-10-16 17:46:29,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:46:29,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:46:29,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:46:29,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:46:29,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:46:29,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5815a063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29, skipping insertion in model container [2022-10-16 17:46:29,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:46:29,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:46:29,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-10-16 17:46:29,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:46:29,363 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:46:29,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-10-16 17:46:29,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:46:29,423 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:46:29,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29 WrapperNode [2022-10-16 17:46:29,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:46:29,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:46:29,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:46:29,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:46:29,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,474 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-16 17:46:29,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:46:29,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:46:29,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:46:29,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:46:29,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:46:29,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:46:29,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:46:29,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:46:29,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (1/1) ... [2022-10-16 17:46:29,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:46:29,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:29,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 17:46:29,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 17:46:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:46:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:46:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-16 17:46:29,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-16 17:46:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-16 17:46:29,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-16 17:46:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:46:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:46:29,764 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:46:29,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:46:30,019 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:46:30,034 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:46:30,034 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 17:46:30,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:46:30 BoogieIcfgContainer [2022-10-16 17:46:30,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:46:30,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:46:30,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:46:30,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:46:30,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:46:29" (1/3) ... [2022-10-16 17:46:30,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a58a0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:46:30, skipping insertion in model container [2022-10-16 17:46:30,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:46:29" (2/3) ... [2022-10-16 17:46:30,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a58a0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:46:30, skipping insertion in model container [2022-10-16 17:46:30,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:46:30" (3/3) ... [2022-10-16 17:46:30,063 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2022-10-16 17:46:30,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:46:30,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:46:30,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:46:30,221 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;@7aa7fa5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:46:30,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:46:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 17:46:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:46:30,236 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:30,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:30,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-10-16 17:46:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:30,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212158934] [2022-10-16 17:46:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:30,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:30,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212158934] [2022-10-16 17:46:30,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212158934] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:30,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:30,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:30,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420514797] [2022-10-16 17:46:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:30,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:30,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:30,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:30,544 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:30,670 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-10-16 17:46:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:46:30,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 17:46:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:30,686 INFO L225 Difference]: With dead ends: 79 [2022-10-16 17:46:30,687 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 17:46:30,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:46:30,696 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 40 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:30,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 178 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 17:46:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-10-16 17:46:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 48 states have internal predecessors, (56), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-10-16 17:46:30,760 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2022-10-16 17:46:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:30,761 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-10-16 17:46:30,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-10-16 17:46:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 17:46:30,762 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:30,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:30,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:46:30,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-10-16 17:46:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:30,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120313779] [2022-10-16 17:46:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:30,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:30,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120313779] [2022-10-16 17:46:30,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120313779] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:30,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:30,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:46:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131823021] [2022-10-16 17:46:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:46:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:46:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:46:30,819 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:30,858 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-10-16 17:46:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:46:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 17:46:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:30,861 INFO L225 Difference]: With dead ends: 60 [2022-10-16 17:46:30,861 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 17:46:30,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:46:30,866 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:30,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:30,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 17:46:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-10-16 17:46:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-10-16 17:46:30,901 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-10-16 17:46:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:30,903 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-10-16 17:46:30,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-10-16 17:46:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 17:46:30,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:30,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:30,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:46:30,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-10-16 17:46:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:30,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397151402] [2022-10-16 17:46:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:31,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397151402] [2022-10-16 17:46:31,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397151402] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:31,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:31,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 17:46:31,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536591066] [2022-10-16 17:46:31,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:46:31,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:46:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:46:31,081 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:31,287 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-10-16 17:46:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:46:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-16 17:46:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:31,292 INFO L225 Difference]: With dead ends: 56 [2022-10-16 17:46:31,292 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:46:31,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:31,297 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 17:46:31,299 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 17:46:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:46:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-16 17:46:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 42 states have internal predecessors, (48), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-10-16 17:46:31,331 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 13 [2022-10-16 17:46:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:31,336 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-10-16 17:46:31,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-10-16 17:46:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 17:46:31,341 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:31,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:31,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:46:31,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-10-16 17:46:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:31,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24840362] [2022-10-16 17:46:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:31,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:31,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24840362] [2022-10-16 17:46:31,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24840362] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:31,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:31,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:46:31,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026528462] [2022-10-16 17:46:31,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:46:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:46:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:46:31,502 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:31,536 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-10-16 17:46:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:46:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-16 17:46:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:31,541 INFO L225 Difference]: With dead ends: 54 [2022-10-16 17:46:31,541 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:46:31,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:46:31,544 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:31,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 66 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:46:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-10-16 17:46:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:46:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-10-16 17:46:31,573 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-10-16 17:46:31,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:31,574 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-10-16 17:46:31,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-10-16 17:46:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 17:46:31,579 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:31,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:31,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:46:31,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-10-16 17:46:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:31,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494984449] [2022-10-16 17:46:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:46:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:31,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:31,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494984449] [2022-10-16 17:46:31,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494984449] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:31,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:31,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:31,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644538868] [2022-10-16 17:46:31,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:31,861 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:31,916 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-10-16 17:46:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:31,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-10-16 17:46:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:31,920 INFO L225 Difference]: With dead ends: 76 [2022-10-16 17:46:31,920 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 17:46:31,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:31,922 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:31,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 17:46:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-10-16 17:46:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2022-10-16 17:46:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-10-16 17:46:31,937 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-10-16 17:46:31,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:31,938 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-10-16 17:46:31,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:31,938 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-10-16 17:46:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 17:46:31,940 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:31,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 17:46:31,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-10-16 17:46:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:31,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792833203] [2022-10-16 17:46:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:46:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 17:46:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:32,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792833203] [2022-10-16 17:46:32,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792833203] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:32,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883627111] [2022-10-16 17:46:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:32,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:32,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:32,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:32,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:46:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:46:32,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:32,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:32,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883627111] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:32,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:32,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:46:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294560141] [2022-10-16 17:46:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:46:32,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:32,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:46:32,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:46:32,301 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:32,419 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-10-16 17:46:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:46:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-10-16 17:46:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:32,421 INFO L225 Difference]: With dead ends: 111 [2022-10-16 17:46:32,421 INFO L226 Difference]: Without dead ends: 61 [2022-10-16 17:46:32,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:46:32,425 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:32,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 121 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-16 17:46:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-10-16 17:46:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-16 17:46:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-10-16 17:46:32,437 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-10-16 17:46:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:32,438 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-10-16 17:46:32,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-10-16 17:46:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 17:46:32,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:32,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:32,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:32,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 17:46:32,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:32,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-10-16 17:46:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:32,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446941152] [2022-10-16 17:46:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:46:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:32,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:32,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446941152] [2022-10-16 17:46:32,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446941152] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:32,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:32,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:32,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104364332] [2022-10-16 17:46:32,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:32,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:32,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:32,910 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:32,964 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:46:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:32,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-10-16 17:46:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:32,969 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:46:32,969 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 17:46:32,973 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 17:46:32,980 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:32,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 17:46:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-10-16 17:46:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2022-10-16 17:46:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-10-16 17:46:33,016 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-10-16 17:46:33,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:33,017 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-10-16 17:46:33,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-10-16 17:46:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:46:33,020 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:33,020 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:33,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:46:33,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-10-16 17:46:33,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:33,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203129764] [2022-10-16 17:46:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:46:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:46:33,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:33,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203129764] [2022-10-16 17:46:33,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203129764] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:33,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:33,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:33,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170655993] [2022-10-16 17:46:33,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:33,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:33,153 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:33,191 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:46:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:33,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-10-16 17:46:33,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:33,193 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:46:33,194 INFO L226 Difference]: Without dead ends: 83 [2022-10-16 17:46:33,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:33,196 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:33,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-10-16 17:46:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-10-16 17:46:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2022-10-16 17:46:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-10-16 17:46:33,231 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-10-16 17:46:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:33,231 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-10-16 17:46:33,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-10-16 17:46:33,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 17:46:33,234 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:33,234 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:33,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 17:46:33,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:33,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash 900334698, now seen corresponding path program 1 times [2022-10-16 17:46:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:33,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901821278] [2022-10-16 17:46:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:46:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-16 17:46:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 17:46:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:33,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901821278] [2022-10-16 17:46:33,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901821278] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:33,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204551224] [2022-10-16 17:46:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:33,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:33,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:46:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:46:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:33,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:33,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204551224] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:33,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:33,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:46:33,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045507385] [2022-10-16 17:46:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:33,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:46:33,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:33,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:46:33,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:46:33,512 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:33,631 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-10-16 17:46:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:46:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-10-16 17:46:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:33,635 INFO L225 Difference]: With dead ends: 141 [2022-10-16 17:46:33,635 INFO L226 Difference]: Without dead ends: 76 [2022-10-16 17:46:33,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:46:33,644 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:33,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 152 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:33,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-16 17:46:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-10-16 17:46:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2022-10-16 17:46:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-10-16 17:46:33,672 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2022-10-16 17:46:33,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:33,673 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-10-16 17:46:33,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-10-16 17:46:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:46:33,675 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:33,675 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:33,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 17:46:33,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-16 17:46:33,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:33,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-10-16 17:46:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:33,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024010620] [2022-10-16 17:46:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:33,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:46:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:46:34,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:34,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024010620] [2022-10-16 17:46:34,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024010620] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:34,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751776997] [2022-10-16 17:46:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:34,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:34,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:34,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:34,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:46:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:34,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:46:34,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:34,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:34,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751776997] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:34,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:34,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-10-16 17:46:34,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966892087] [2022-10-16 17:46:34,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:34,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:46:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:34,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:46:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:46:34,349 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:34,763 INFO L93 Difference]: Finished difference Result 185 states and 242 transitions. [2022-10-16 17:46:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:46:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-10-16 17:46:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:34,766 INFO L225 Difference]: With dead ends: 185 [2022-10-16 17:46:34,766 INFO L226 Difference]: Without dead ends: 120 [2022-10-16 17:46:34,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:46:34,768 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 121 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:34,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 356 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-16 17:46:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2022-10-16 17:46:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.1625) internal successors, (93), 85 states have internal predecessors, (93), 14 states have call successors, (14), 5 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2022-10-16 17:46:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2022-10-16 17:46:34,782 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 30 [2022-10-16 17:46:34,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:34,782 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2022-10-16 17:46:34,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2022-10-16 17:46:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 17:46:34,784 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:34,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:34,820 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 17:46:34,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:35,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:35,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash -781616985, now seen corresponding path program 1 times [2022-10-16 17:46:35,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:35,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858936222] [2022-10-16 17:46:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:35,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:46:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 17:46:35,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:35,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858936222] [2022-10-16 17:46:35,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858936222] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:35,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:35,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994380534] [2022-10-16 17:46:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:35,170 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:35,229 INFO L93 Difference]: Finished difference Result 140 states and 189 transitions. [2022-10-16 17:46:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:35,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-10-16 17:46:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:35,231 INFO L225 Difference]: With dead ends: 140 [2022-10-16 17:46:35,231 INFO L226 Difference]: Without dead ends: 138 [2022-10-16 17:46:35,232 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 17:46:35,233 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:35,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-10-16 17:46:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2022-10-16 17:46:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.1368421052631579) internal successors, (108), 98 states have internal predecessors, (108), 17 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (40), 20 states have call predecessors, (40), 16 states have call successors, (40) [2022-10-16 17:46:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2022-10-16 17:46:35,248 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 31 [2022-10-16 17:46:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:35,248 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2022-10-16 17:46:35,249 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 17:46:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2022-10-16 17:46:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:46:35,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:35,250 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:35,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 17:46:35,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash -744072932, now seen corresponding path program 1 times [2022-10-16 17:46:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:35,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719588235] [2022-10-16 17:46:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 17:46:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:35,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719588235] [2022-10-16 17:46:35,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719588235] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:35,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883412456] [2022-10-16 17:46:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:35,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:35,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:35,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:35,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:46:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:35,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 17:46:35,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:35,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:35,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883412456] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:35,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:35,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 16 [2022-10-16 17:46:35,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063606159] [2022-10-16 17:46:35,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:35,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:46:35,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:46:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:46:35,673 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-16 17:46:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:36,057 INFO L93 Difference]: Finished difference Result 265 states and 352 transitions. [2022-10-16 17:46:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:46:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2022-10-16 17:46:36,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:36,060 INFO L225 Difference]: With dead ends: 265 [2022-10-16 17:46:36,060 INFO L226 Difference]: Without dead ends: 156 [2022-10-16 17:46:36,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-10-16 17:46:36,062 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 112 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:36,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 406 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-16 17:46:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2022-10-16 17:46:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 110 states have internal predecessors, (122), 19 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (45), 22 states have call predecessors, (45), 18 states have call successors, (45) [2022-10-16 17:46:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-10-16 17:46:36,077 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 36 [2022-10-16 17:46:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:36,078 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-10-16 17:46:36,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-16 17:46:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2022-10-16 17:46:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:46:36,079 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:36,079 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:36,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-16 17:46:36,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:36,294 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:36,295 INFO L85 PathProgramCache]: Analyzing trace with hash -949317654, now seen corresponding path program 2 times [2022-10-16 17:46:36,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:36,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127395683] [2022-10-16 17:46:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:46:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:36,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127395683] [2022-10-16 17:46:36,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127395683] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:36,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877391519] [2022-10-16 17:46:36,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:36,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:36,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:36,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:36,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:46:36,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:36,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:36,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:36,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:36,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:36,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877391519] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:36,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:36,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:46:36,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014229036] [2022-10-16 17:46:36,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:36,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:36,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:36,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:36,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:36,478 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:36,519 INFO L93 Difference]: Finished difference Result 150 states and 199 transitions. [2022-10-16 17:46:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-10-16 17:46:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:36,526 INFO L225 Difference]: With dead ends: 150 [2022-10-16 17:46:36,526 INFO L226 Difference]: Without dead ends: 149 [2022-10-16 17:46:36,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:36,529 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:36,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-10-16 17:46:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2022-10-16 17:46:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 111 states have (on average 1.135135135135135) internal successors, (126), 112 states have internal predecessors, (126), 19 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (45), 24 states have call predecessors, (45), 18 states have call successors, (45) [2022-10-16 17:46:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2022-10-16 17:46:36,551 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 36 [2022-10-16 17:46:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:36,552 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2022-10-16 17:46:36,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2022-10-16 17:46:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 17:46:36,553 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:36,553 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:36,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:36,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 17:46:36,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash 635923895, now seen corresponding path program 1 times [2022-10-16 17:46:36,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:36,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633867496] [2022-10-16 17:46:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:36,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:46:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:36,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:36,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633867496] [2022-10-16 17:46:36,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633867496] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:36,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081501938] [2022-10-16 17:46:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:36,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:36,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:36,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:46:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:36,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:36,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:36,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:46:37,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081501938] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:37,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:37,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-10-16 17:46:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398805304] [2022-10-16 17:46:37,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:37,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:46:37,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:46:37,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:46:37,030 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:37,113 INFO L93 Difference]: Finished difference Result 164 states and 216 transitions. [2022-10-16 17:46:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 17:46:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2022-10-16 17:46:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:37,116 INFO L225 Difference]: With dead ends: 164 [2022-10-16 17:46:37,116 INFO L226 Difference]: Without dead ends: 163 [2022-10-16 17:46:37,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:46:37,117 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:37,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-10-16 17:46:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 143. [2022-10-16 17:46:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 111 states have internal predecessors, (129), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (42), 25 states have call predecessors, (42), 17 states have call successors, (42) [2022-10-16 17:46:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2022-10-16 17:46:37,131 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 37 [2022-10-16 17:46:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:37,132 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2022-10-16 17:46:37,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2022-10-16 17:46:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 17:46:37,133 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:37,133 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:37,172 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 17:46:37,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:37,347 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1004191886, now seen corresponding path program 2 times [2022-10-16 17:46:37,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:37,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030945381] [2022-10-16 17:46:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:46:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:46:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:37,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:37,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030945381] [2022-10-16 17:46:37,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030945381] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:37,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708988837] [2022-10-16 17:46:37,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:37,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:37,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:37,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:37,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:46:37,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:37,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:37,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:37,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:37,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708988837] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:37,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:37,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:46:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906992389] [2022-10-16 17:46:37,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:37,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:37,554 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:37,583 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2022-10-16 17:46:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-10-16 17:46:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:37,586 INFO L225 Difference]: With dead ends: 154 [2022-10-16 17:46:37,586 INFO L226 Difference]: Without dead ends: 153 [2022-10-16 17:46:37,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:37,587 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:37,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:37,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-10-16 17:46:37,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2022-10-16 17:46:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 116 states have (on average 1.146551724137931) internal successors, (133), 113 states have internal predecessors, (133), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (42), 27 states have call predecessors, (42), 17 states have call successors, (42) [2022-10-16 17:46:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2022-10-16 17:46:37,599 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 51 [2022-10-16 17:46:37,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:37,600 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2022-10-16 17:46:37,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:46:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2022-10-16 17:46:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-16 17:46:37,601 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:37,601 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:37,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:37,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:37,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1065177323, now seen corresponding path program 1 times [2022-10-16 17:46:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:37,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98456161] [2022-10-16 17:46:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:46:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 17:46:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:37,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:37,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98456161] [2022-10-16 17:46:37,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98456161] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:37,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431342786] [2022-10-16 17:46:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:37,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:37,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:46:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 17:46:37,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:38,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:38,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431342786] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:38,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:38,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 15 [2022-10-16 17:46:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968514082] [2022-10-16 17:46:38,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:38,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 17:46:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 17:46:38,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-10-16 17:46:38,201 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:46:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:38,587 INFO L93 Difference]: Finished difference Result 283 states and 380 transitions. [2022-10-16 17:46:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:46:38,590 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2022-10-16 17:46:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:38,592 INFO L225 Difference]: With dead ends: 283 [2022-10-16 17:46:38,592 INFO L226 Difference]: Without dead ends: 161 [2022-10-16 17:46:38,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:46:38,594 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 89 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:38,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 163 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-10-16 17:46:38,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2022-10-16 17:46:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 108 states have (on average 1.1203703703703705) internal successors, (121), 109 states have internal predecessors, (121), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (31), 22 states have call predecessors, (31), 16 states have call successors, (31) [2022-10-16 17:46:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2022-10-16 17:46:38,606 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 169 transitions. Word has length 52 [2022-10-16 17:46:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:38,606 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 169 transitions. [2022-10-16 17:46:38,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 7 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 17:46:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 169 transitions. [2022-10-16 17:46:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-16 17:46:38,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:38,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:38,645 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 17:46:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:46:38,823 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash -738631343, now seen corresponding path program 1 times [2022-10-16 17:46:38,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:38,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517345027] [2022-10-16 17:46:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:46:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:46:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:38,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517345027] [2022-10-16 17:46:38,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517345027] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:38,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:38,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 17:46:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077319477] [2022-10-16 17:46:38,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:38,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 17:46:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 17:46:38,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:46:38,991 INFO L87 Difference]: Start difference. First operand 139 states and 169 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 17:46:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:39,081 INFO L93 Difference]: Finished difference Result 187 states and 242 transitions. [2022-10-16 17:46:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:46:39,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2022-10-16 17:46:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:39,084 INFO L225 Difference]: With dead ends: 187 [2022-10-16 17:46:39,084 INFO L226 Difference]: Without dead ends: 186 [2022-10-16 17:46:39,084 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 17:46:39,085 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:39,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 289 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:39,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-10-16 17:46:39,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 157. [2022-10-16 17:46:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 121 states have (on average 1.1074380165289257) internal successors, (134), 123 states have internal predecessors, (134), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (50), 26 states have call predecessors, (50), 19 states have call successors, (50) [2022-10-16 17:46:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2022-10-16 17:46:39,099 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 50 [2022-10-16 17:46:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:39,100 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2022-10-16 17:46:39,100 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 17:46:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2022-10-16 17:46:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 17:46:39,101 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:39,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:39,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-16 17:46:39,102 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1422735082, now seen corresponding path program 1 times [2022-10-16 17:46:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:39,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557534220] [2022-10-16 17:46:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:39,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:46:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:39,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:39,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557534220] [2022-10-16 17:46:39,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557534220] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:39,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:39,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:39,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745209728] [2022-10-16 17:46:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:39,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:39,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:39,188 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:39,219 INFO L93 Difference]: Finished difference Result 179 states and 230 transitions. [2022-10-16 17:46:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-10-16 17:46:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:39,221 INFO L225 Difference]: With dead ends: 179 [2022-10-16 17:46:39,221 INFO L226 Difference]: Without dead ends: 178 [2022-10-16 17:46:39,221 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 17:46:39,222 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:39,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-10-16 17:46:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2022-10-16 17:46:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 128 states have (on average 1.125) internal successors, (144), 127 states have internal predecessors, (144), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (50), 29 states have call predecessors, (50), 19 states have call successors, (50) [2022-10-16 17:46:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 214 transitions. [2022-10-16 17:46:39,235 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 214 transitions. Word has length 51 [2022-10-16 17:46:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:39,235 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 214 transitions. [2022-10-16 17:46:39,236 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 17:46:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 214 transitions. [2022-10-16 17:46:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 17:46:39,237 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:39,237 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:39,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 17:46:39,237 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -103078069, now seen corresponding path program 1 times [2022-10-16 17:46:39,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:39,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764288356] [2022-10-16 17:46:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:46:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:46:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 17:46:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:39,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764288356] [2022-10-16 17:46:39,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764288356] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:39,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169496854] [2022-10-16 17:46:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:39,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:39,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:39,324 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 17:46:39,346 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 17:46:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:46:39,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:39,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:39,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169496854] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:39,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:39,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2022-10-16 17:46:39,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087648886] [2022-10-16 17:46:39,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:39,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:46:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:46:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:46:39,770 INFO L87 Difference]: Start difference. First operand 164 states and 214 transitions. Second operand has 26 states, 24 states have (on average 3.875) internal successors, (93), 18 states have internal predecessors, (93), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 17:46:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:40,254 INFO L93 Difference]: Finished difference Result 275 states and 365 transitions. [2022-10-16 17:46:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 17:46:40,254 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.875) internal successors, (93), 18 states have internal predecessors, (93), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 60 [2022-10-16 17:46:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:40,256 INFO L225 Difference]: With dead ends: 275 [2022-10-16 17:46:40,256 INFO L226 Difference]: Without dead ends: 147 [2022-10-16 17:46:40,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2022-10-16 17:46:40,258 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 181 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:40,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 217 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-10-16 17:46:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2022-10-16 17:46:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.102803738317757) internal successors, (118), 110 states have internal predecessors, (118), 17 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (23), 21 states have call predecessors, (23), 16 states have call successors, (23) [2022-10-16 17:46:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2022-10-16 17:46:40,270 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 60 [2022-10-16 17:46:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:40,271 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2022-10-16 17:46:40,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.875) internal successors, (93), 18 states have internal predecessors, (93), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 17:46:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2022-10-16 17:46:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 17:46:40,272 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:40,272 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:40,309 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 17:46:40,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:40,486 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1160941452, now seen corresponding path program 1 times [2022-10-16 17:46:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:40,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412216298] [2022-10-16 17:46:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 17:46:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:46:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 17:46:40,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:40,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412216298] [2022-10-16 17:46:40,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412216298] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:40,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:40,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:40,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117164845] [2022-10-16 17:46:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:40,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:40,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:40,567 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:40,595 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2022-10-16 17:46:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-10-16 17:46:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:40,596 INFO L225 Difference]: With dead ends: 141 [2022-10-16 17:46:40,597 INFO L226 Difference]: Without dead ends: 140 [2022-10-16 17:46:40,597 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 17:46:40,598 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:40,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 143 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-10-16 17:46:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2022-10-16 17:46:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 105 states have internal predecessors, (110), 16 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (22), 19 states have call predecessors, (22), 15 states have call successors, (22) [2022-10-16 17:46:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 148 transitions. [2022-10-16 17:46:40,608 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 148 transitions. Word has length 55 [2022-10-16 17:46:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:40,609 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 148 transitions. [2022-10-16 17:46:40,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 148 transitions. [2022-10-16 17:46:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 17:46:40,610 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:40,610 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:40,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 17:46:40,611 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:40,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:40,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1620774316, now seen corresponding path program 1 times [2022-10-16 17:46:40,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:40,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40931023] [2022-10-16 17:46:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:40,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-16 17:46:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:46:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 17:46:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:40,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40931023] [2022-10-16 17:46:40,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40931023] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:40,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759569895] [2022-10-16 17:46:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:40,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:40,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:40,824 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 17:46:40,826 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 17:46:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 17:46:40,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 27 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:40,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 27 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:46:41,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759569895] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:41,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:41,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-10-16 17:46:41,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717576179] [2022-10-16 17:46:41,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:41,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:46:41,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:41,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:46:41,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:46:41,303 INFO L87 Difference]: Start difference. First operand 132 states and 148 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:46:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:41,577 INFO L93 Difference]: Finished difference Result 209 states and 230 transitions. [2022-10-16 17:46:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:46:41,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 87 [2022-10-16 17:46:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:41,580 INFO L225 Difference]: With dead ends: 209 [2022-10-16 17:46:41,580 INFO L226 Difference]: Without dead ends: 129 [2022-10-16 17:46:41,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 180 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-10-16 17:46:41,583 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 122 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:41,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 142 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:46:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-10-16 17:46:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-10-16 17:46:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 98 states have (on average 1.0714285714285714) internal successors, (105), 103 states have internal predecessors, (105), 16 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (20), 18 states have call predecessors, (20), 15 states have call successors, (20) [2022-10-16 17:46:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2022-10-16 17:46:41,599 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 87 [2022-10-16 17:46:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:41,600 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2022-10-16 17:46:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-10-16 17:46:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2022-10-16 17:46:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 17:46:41,602 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:41,603 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:41,660 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 17:46:41,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-10-16 17:46:41,816 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:41,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1424711268, now seen corresponding path program 1 times [2022-10-16 17:46:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:41,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791739984] [2022-10-16 17:46:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:41,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:41,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:46:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-16 17:46:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-16 17:46:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:42,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791739984] [2022-10-16 17:46:42,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791739984] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:42,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549987839] [2022-10-16 17:46:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:42,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:42,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:42,041 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 17:46:42,065 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 17:46:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:46:42,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 17:46:42,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 17:46:42,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549987839] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:42,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:42,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 26 [2022-10-16 17:46:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297076626] [2022-10-16 17:46:42,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:46:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:46:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:46:42,648 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-10-16 17:46:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:43,467 INFO L93 Difference]: Finished difference Result 216 states and 238 transitions. [2022-10-16 17:46:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 17:46:43,470 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 68 [2022-10-16 17:46:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:43,471 INFO L225 Difference]: With dead ends: 216 [2022-10-16 17:46:43,471 INFO L226 Difference]: Without dead ends: 120 [2022-10-16 17:46:43,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:46:43,473 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 115 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:43,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 173 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:46:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-16 17:46:43,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2022-10-16 17:46:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 81 states have internal predecessors, (82), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-10-16 17:46:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2022-10-16 17:46:43,483 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 68 [2022-10-16 17:46:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:43,483 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2022-10-16 17:46:43,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-10-16 17:46:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2022-10-16 17:46:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-16 17:46:43,485 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:43,485 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:43,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-10-16 17:46:43,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-16 17:46:43,700 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:43,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash 58474788, now seen corresponding path program 1 times [2022-10-16 17:46:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:43,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051272877] [2022-10-16 17:46:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:46:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 17:46:44,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:44,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051272877] [2022-10-16 17:46:44,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051272877] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:44,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456745397] [2022-10-16 17:46:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:44,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:44,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:44,071 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 17:46:44,087 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 17:46:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:44,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:46:44,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 17:46:44,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 17:46:44,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456745397] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:44,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:44,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-10-16 17:46:44,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704241240] [2022-10-16 17:46:44,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:44,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:46:44,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:46:44,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:46:44,770 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:44,869 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2022-10-16 17:46:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:46:44,870 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 83 [2022-10-16 17:46:44,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:44,871 INFO L225 Difference]: With dead ends: 101 [2022-10-16 17:46:44,871 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 17:46:44,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 165 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:46:44,873 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 26 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:44,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 366 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 17:46:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-10-16 17:46:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.051948051948052) internal successors, (81), 80 states have internal predecessors, (81), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2022-10-16 17:46:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-10-16 17:46:44,881 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 83 [2022-10-16 17:46:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:44,882 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-10-16 17:46:44,882 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 17:46:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-10-16 17:46:44,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-16 17:46:44,883 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:44,883 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:44,922 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 17:46:45,098 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 17:46:45,099 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:45,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1812718525, now seen corresponding path program 1 times [2022-10-16 17:46:45,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:45,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539745578] [2022-10-16 17:46:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:45,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:46:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:46:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 17:46:45,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:45,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539745578] [2022-10-16 17:46:45,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539745578] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:45,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477893375] [2022-10-16 17:46:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:45,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:45,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:45,518 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 17:46:45,539 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 17:46:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:46:45,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 17:46:45,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 17:46:46,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477893375] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:46,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:46,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-10-16 17:46:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302738999] [2022-10-16 17:46:46,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:46,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-16 17:46:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-16 17:46:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-10-16 17:46:46,214 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:46,406 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2022-10-16 17:46:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-16 17:46:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 84 [2022-10-16 17:46:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:46,407 INFO L225 Difference]: With dead ends: 121 [2022-10-16 17:46:46,407 INFO L226 Difference]: Without dead ends: 0 [2022-10-16 17:46:46,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 167 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 17:46:46,409 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:46,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 477 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-16 17:46:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-16 17:46:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:46:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-16 17:46:46,411 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2022-10-16 17:46:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:46,411 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-16 17:46:46,412 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 17:46:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-16 17:46:46,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-16 17:46:46,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-10-16 17:46:46,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-10-16 17:46:46,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-10-16 17:46:46,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-10-16 17:46:46,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-10-16 17:46:46,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-10-16 17:46:46,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-10-16 17:46:46,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-10-16 17:46:46,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-10-16 17:46:46,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-10-16 17:46:46,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-10-16 17:46:46,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-10-16 17:46:46,457 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 17:46:46,633 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 17:46:46,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-16 17:46:47,529 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-16 17:46:47,529 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-10-16 17:46:47,529 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-16 17:46:47,529 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-10-16 17:46:47,529 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 4) [2022-10-16 17:46:47,529 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-10-16 17:46:47,529 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-10-16 17:46:47,530 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 4) (<= 4 |ULTIMATE.start_main_~x~0#1|)) [2022-10-16 17:46:47,530 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-10-16 17:46:47,530 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-10-16 17:46:47,530 INFO L902 garLoopResultBuilder]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2022-10-16 17:46:47,530 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,531 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,531 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,531 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,531 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (not (<= |fibo2_#in~n| 3)))) (and (or (and (< 1 fibo2_~n) (<= fibo2_~n |fibo2_#in~n|)) .cse0) (or (<= |fibo2_#in~n| fibo2_~n) .cse0))) [2022-10-16 17:46:47,531 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,531 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,532 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,532 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse0 (not (<= |fibo2_#in~n| 3)))) (and (or (and (<= |fibo2_#in~n| fibo2_~n) (<= 1 |fibo2_#t~ret6|)) .cse0 (not (<= 3 |fibo2_#in~n|))) (or (and (< 0 (+ |fibo2_#t~ret6| 3)) (<= |fibo2_#t~ret6| 1) (< 1 fibo2_~n) (<= fibo2_~n |fibo2_#in~n|)) .cse0))) [2022-10-16 17:46:47,532 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,532 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,532 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,532 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-10-16 17:46:47,533 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,534 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,534 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,534 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,534 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (not (<= |fibo1_#in~n| 4)) (not (<= 4 |fibo1_#in~n|)) .cse0) (or (and (< 1 fibo1_~n) .cse0) (not (<= |fibo1_#in~n| 2))))) [2022-10-16 17:46:47,534 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,534 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,535 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,535 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-10-16 17:46:47,535 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,535 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (not (<= |fibo1_#in~n| 2)))) (and (or (and (<= fibo1_~n |fibo1_#in~n|) (not (<= fibo1_~n 1))) .cse0) (or (= |fibo1_#t~ret4| 1) .cse0) (or (not (<= |fibo1_#in~n| 4)) (not (<= 4 |fibo1_#in~n|)) (and (<= 2 |fibo1_#t~ret4|) (= fibo1_~n |fibo1_#in~n|) (<= |fibo1_#t~ret4| 2))))) [2022-10-16 17:46:47,535 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,535 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,535 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,536 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,536 INFO L902 garLoopResultBuilder]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2022-10-16 17:46:47,536 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,536 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-10-16 17:46:47,536 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-10-16 17:46:47,536 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-10-16 17:46:47,537 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-10-16 17:46:47,540 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:47,543 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 17:46:47,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:46:47 BoogieIcfgContainer [2022-10-16 17:46:47,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 17:46:47,559 INFO L158 Benchmark]: Toolchain (without parser) took 18406.42ms. Allocated memory was 162.5MB in the beginning and 244.3MB in the end (delta: 81.8MB). Free memory was 136.8MB in the beginning and 94.9MB in the end (delta: 41.9MB). Peak memory consumption was 134.6MB. Max. memory is 8.0GB. [2022-10-16 17:46:47,560 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 162.5MB. Free memory was 137.0MB in the beginning and 136.9MB in the end (delta: 139.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 17:46:47,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.50ms. Allocated memory is still 162.5MB. Free memory was 136.7MB in the beginning and 126.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-16 17:46:47,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.29ms. Allocated memory is still 162.5MB. Free memory was 126.6MB in the beginning and 125.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 17:46:47,561 INFO L158 Benchmark]: Boogie Preprocessor took 52.72ms. Allocated memory is still 162.5MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 17:46:47,562 INFO L158 Benchmark]: RCFGBuilder took 510.30ms. Allocated memory is still 162.5MB. Free memory was 124.2MB in the beginning and 112.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-10-16 17:46:47,562 INFO L158 Benchmark]: TraceAbstraction took 17513.17ms. Allocated memory was 162.5MB in the beginning and 244.3MB in the end (delta: 81.8MB). Free memory was 111.7MB in the beginning and 94.9MB in the end (delta: 16.8MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. [2022-10-16 17:46:47,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 162.5MB. Free memory was 137.0MB in the beginning and 136.9MB in the end (delta: 139.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 269.50ms. Allocated memory is still 162.5MB. Free memory was 136.7MB in the beginning and 126.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.29ms. Allocated memory is still 162.5MB. Free memory was 126.6MB in the beginning and 125.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.72ms. Allocated memory is still 162.5MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 510.30ms. Allocated memory is still 162.5MB. Free memory was 124.2MB in the beginning and 112.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 17513.17ms. Allocated memory was 162.5MB in the beginning and 244.3MB in the end (delta: 81.8MB). Free memory was 111.7MB in the beginning and 94.9MB in the end (delta: 16.8MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 17.4s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1102 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1054 mSDsluCounter, 4525 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3664 mSDsCounter, 311 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4840 IncrementalHoareTripleChecker+Invalid, 5151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 311 mSolverCounterUnsat, 861 mSDtfsCounter, 4840 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1600 GetRequests, 1251 SyntacticMatches, 41 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=18, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 215 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 290 PreInvPairs, 384 NumberOfFragments, 136 HoareAnnotationTreeSize, 290 FomulaSimplifications, 1725 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3379 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 1680 NumberOfCodeBlocks, 1680 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2171 ConstructedInterpolants, 0 QuantifiedInterpolants, 4816 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1583 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 46 InterpolantComputations, 15 PerfectInterpolantSequences, 1172/1535 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: x <= 4 RESULT: Ultimate proved your program to be correct! [2022-10-16 17:46:47,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...