/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_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:44:37,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:44:37,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:44:37,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 17:44:37,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:44:37,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:44:37,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:44:37,758 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 17:44:37,789 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:44:37,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:44:37,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:44:37,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:44:37,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:44:37,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:44:37,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:44:37,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:44:37,795 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:44:37,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:44:37,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:44:37,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:44:37,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:44:37,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:44:37,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:44:37,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:44:37,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:44:37,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:44:37,798 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:44:37,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:44:37,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:44:37,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:44:37,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:44:37,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:44:37,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:44:37,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:44:37,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:44:37,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:44:37,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:44:37,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:44:37,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:44:37,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:44:37,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:44:37,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:44:38,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:44:38,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:44:38,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:44:38,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:44:38,263 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:44:38,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c [2022-10-16 17:44:38,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3556affb4/0ebfb2d007334c15a4ea770e4ec588b5/FLAGff5c21551 [2022-10-16 17:44:38,910 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:44:38,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c [2022-10-16 17:44:38,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3556affb4/0ebfb2d007334c15a4ea770e4ec588b5/FLAGff5c21551 [2022-10-16 17:44:39,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3556affb4/0ebfb2d007334c15a4ea770e4ec588b5 [2022-10-16 17:44:39,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:44:39,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:44:39,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:44:39,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:44:39,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:44:39,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c21bc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39, skipping insertion in model container [2022-10-16 17:44:39,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:44:39,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:44:39,453 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_20-1.c[951,964] [2022-10-16 17:44:39,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:44:39,464 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:44:39,481 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_20-1.c[951,964] [2022-10-16 17:44:39,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:44:39,498 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:44:39,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39 WrapperNode [2022-10-16 17:44:39,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:44:39,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:44:39,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:44:39,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:44:39,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,535 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-16 17:44:39,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:44:39,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:44:39,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:44:39,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:44:39,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,556 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:44:39,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:44:39,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:44:39,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:44:39,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (1/1) ... [2022-10-16 17:44:39,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:44:39,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:39,607 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 17:44:39,629 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 17:44:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:44:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:44:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-16 17:44:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-16 17:44:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-16 17:44:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-16 17:44:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:44:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:44:39,764 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:44:39,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:44:40,102 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:44:40,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:44:40,122 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 17:44:40,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:44:40 BoogieIcfgContainer [2022-10-16 17:44:40,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:44:40,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:44:40,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:44:40,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:44:40,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:44:39" (1/3) ... [2022-10-16 17:44:40,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a2ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:44:40, skipping insertion in model container [2022-10-16 17:44:40,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:44:39" (2/3) ... [2022-10-16 17:44:40,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a2ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:44:40, skipping insertion in model container [2022-10-16 17:44:40,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:44:40" (3/3) ... [2022-10-16 17:44:40,159 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2022-10-16 17:44:40,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:44:40,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:44:40,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:44:40,319 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;@5bf2e403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:44:40,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:44:40,333 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 17:44:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:44:40,354 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:40,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:40,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-10-16 17:44:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:40,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185523892] [2022-10-16 17:44:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:40,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:40,630 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 17:44:40,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:40,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185523892] [2022-10-16 17:44:40,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185523892] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:40,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:40,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:44:40,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190430049] [2022-10-16 17:44:40,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:40,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:44:40,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:44:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:44:40,682 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 17:44:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:40,816 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-10-16 17:44:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:44:40,819 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 17:44:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:40,831 INFO L225 Difference]: With dead ends: 79 [2022-10-16 17:44:40,832 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 17:44:40,836 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 17:44:40,841 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 17:44:40,843 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 17:44:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 17:44:40,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-10-16 17:44:40,896 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 17:44:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-10-16 17:44:40,901 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2022-10-16 17:44:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:40,902 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-10-16 17:44:40,902 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 17:44:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-10-16 17:44:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 17:44:40,903 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:40,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:40,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:44:40,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-10-16 17:44:40,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:40,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552077694] [2022-10-16 17:44:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:40,951 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 17:44:40,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:40,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552077694] [2022-10-16 17:44:40,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552077694] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:40,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:40,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:44:40,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295490999] [2022-10-16 17:44:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:40,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:44:40,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:44:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:44:40,962 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 17:44:41,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:41,001 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-10-16 17:44:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:44:41,002 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 17:44:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:41,004 INFO L225 Difference]: With dead ends: 60 [2022-10-16 17:44:41,004 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 17:44:41,005 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 17:44:41,007 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 17:44:41,008 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 17:44:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 17:44:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-10-16 17:44:41,022 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 17:44:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-10-16 17:44:41,026 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-10-16 17:44:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:41,026 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-10-16 17:44:41,027 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 17:44:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-10-16 17:44:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 17:44:41,028 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:41,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:41,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:44:41,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:41,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-10-16 17:44:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:41,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033325879] [2022-10-16 17:44:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:41,195 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 17:44:41,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:41,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033325879] [2022-10-16 17:44:41,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033325879] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:41,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:41,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 17:44:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509576750] [2022-10-16 17:44:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:44:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:44:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:44:41,200 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 17:44:41,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:41,416 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-10-16 17:44:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:44:41,417 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 17:44:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:41,423 INFO L225 Difference]: With dead ends: 56 [2022-10-16 17:44:41,423 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:44:41,426 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 17:44:41,435 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 17:44:41,437 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 17:44:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:44:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-16 17:44:41,456 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 17:44:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-10-16 17:44:41,458 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 13 [2022-10-16 17:44:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:41,459 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-10-16 17:44:41,459 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 17:44:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-10-16 17:44:41,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 17:44:41,460 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:41,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:44:41,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-10-16 17:44:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:41,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475669299] [2022-10-16 17:44:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:41,553 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 17:44:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:41,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475669299] [2022-10-16 17:44:41,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475669299] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:41,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:41,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:44:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957522662] [2022-10-16 17:44:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:41,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:44:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:41,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:44:41,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:44:41,560 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 17:44:41,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:41,596 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-10-16 17:44:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:44:41,597 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 17:44:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:41,598 INFO L225 Difference]: With dead ends: 54 [2022-10-16 17:44:41,598 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:44:41,599 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 17:44:41,601 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 17:44:41,601 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 17:44:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:44:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-10-16 17:44:41,612 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 17:44:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-10-16 17:44:41,614 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-10-16 17:44:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:41,614 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-10-16 17:44:41,615 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 17:44:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-10-16 17:44:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 17:44:41,616 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:41,616 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 17:44:41,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:44:41,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-10-16 17:44:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:41,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185172773] [2022-10-16 17:44:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:44:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:44:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:41,812 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 17:44:41,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:41,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185172773] [2022-10-16 17:44:41,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185172773] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:41,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:41,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:44:41,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551075278] [2022-10-16 17:44:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:41,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:44:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:41,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:44:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:44:41,817 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 17:44:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:41,874 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-10-16 17:44:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:44:41,876 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 17:44:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:41,881 INFO L225 Difference]: With dead ends: 76 [2022-10-16 17:44:41,882 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 17:44:41,883 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 17:44:41,888 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 17:44:41,889 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 17:44:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 17:44:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-10-16 17:44:41,922 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 17:44:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-10-16 17:44:41,924 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-10-16 17:44:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:41,925 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-10-16 17:44:41,925 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 17:44:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-10-16 17:44:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 17:44:41,929 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:41,929 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 17:44:41,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 17:44:41,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:41,932 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-10-16 17:44:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:41,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163917112] [2022-10-16 17:44:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:41,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:44:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:44:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:42,111 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 17:44:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:42,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163917112] [2022-10-16 17:44:42,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163917112] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716165168] [2022-10-16 17:44:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:42,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:42,115 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 17:44:42,125 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 17:44:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:42,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:44:42,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:42,339 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 17:44:42,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:44:42,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716165168] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:42,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:44:42,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:44:42,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942358393] [2022-10-16 17:44:42,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:42,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:44:42,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:42,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:44:42,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:44:42,344 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 17:44:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:42,501 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-10-16 17:44:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:44:42,502 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 17:44:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:42,504 INFO L225 Difference]: With dead ends: 111 [2022-10-16 17:44:42,504 INFO L226 Difference]: Without dead ends: 61 [2022-10-16 17:44:42,506 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 17:44:42,511 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 17:44:42,512 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 17:44:42,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-16 17:44:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-10-16 17:44:42,530 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 17:44:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-10-16 17:44:42,535 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-10-16 17:44:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:42,536 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-10-16 17:44:42,537 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 17:44:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-10-16 17:44:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 17:44:42,541 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:42,541 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 17:44:42,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 17:44:42,756 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 17:44:42,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-10-16 17:44:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:42,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171789601] [2022-10-16 17:44:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:44:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:44:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:42,902 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 17:44:42,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:42,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171789601] [2022-10-16 17:44:42,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171789601] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:42,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:42,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:44:42,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969403509] [2022-10-16 17:44:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:42,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:44:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:42,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:44:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:44:42,909 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 17:44:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:42,981 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:44:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:44:42,981 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 17:44:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:42,983 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:44:42,983 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 17:44:42,984 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 17:44:42,984 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, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:44:42,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:44:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 17:44:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-10-16 17:44:43,004 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 17:44:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-10-16 17:44:43,006 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-10-16 17:44:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:43,006 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-10-16 17:44:43,006 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 17:44:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-10-16 17:44:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:44:43,009 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:43,009 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 17:44:43,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:44:43,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-10-16 17:44:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:43,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050577147] [2022-10-16 17:44:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:44:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:44:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,169 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 17:44:43,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:43,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050577147] [2022-10-16 17:44:43,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050577147] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:43,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:43,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:44:43,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054897686] [2022-10-16 17:44:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:43,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:44:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:44:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:44:43,178 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 17:44:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:43,217 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:44:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:44:43,217 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 17:44:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:43,220 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:44:43,220 INFO L226 Difference]: Without dead ends: 83 [2022-10-16 17:44:43,222 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 17:44:43,223 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 17:44:43,224 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 17:44:43,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-10-16 17:44:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-10-16 17:44:43,239 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 17:44:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-10-16 17:44:43,241 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-10-16 17:44:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:43,243 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-10-16 17:44:43,244 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 17:44:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-10-16 17:44:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 17:44:43,252 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:43,253 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 17:44:43,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 17:44:43,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:43,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash 900334698, now seen corresponding path program 1 times [2022-10-16 17:44:43,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:43,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173016854] [2022-10-16 17:44:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:43,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:44:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:44:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-16 17:44:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,460 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 17:44:43,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173016854] [2022-10-16 17:44:43,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173016854] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092103784] [2022-10-16 17:44:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:43,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:43,463 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 17:44:43,475 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 17:44:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:44:43,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:43,593 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 17:44:43,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:44:43,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092103784] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:43,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:44:43,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:44:43,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700043341] [2022-10-16 17:44:43,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:43,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:44:43,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:43,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:44:43,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:44:43,596 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 17:44:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:43,707 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-10-16 17:44:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:44:43,707 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 17:44:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:43,709 INFO L225 Difference]: With dead ends: 141 [2022-10-16 17:44:43,709 INFO L226 Difference]: Without dead ends: 76 [2022-10-16 17:44:43,710 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 17:44:43,711 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 17:44:43,711 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 17:44:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-16 17:44:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-10-16 17:44:43,719 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 17:44:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-10-16 17:44:43,721 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2022-10-16 17:44:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:43,721 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-10-16 17:44:43,721 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 17:44:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-10-16 17:44:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:44:43,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:43,723 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 17:44:43,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:44:43,936 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 17:44:43,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:43,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-10-16 17:44:43,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:43,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8621665] [2022-10-16 17:44:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:43,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:44:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:44:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:44,036 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 17:44:44,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:44,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8621665] [2022-10-16 17:44:44,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8621665] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:44,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872334680] [2022-10-16 17:44:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:44,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:44,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:44,039 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 17:44:44,051 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 17:44:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:44,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:44:44,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:44,206 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 17:44:44,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:44:44,390 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 17:44:44,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872334680] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:44:44,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:44:44,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-10-16 17:44:44,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11377974] [2022-10-16 17:44:44,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:44:44,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:44:44,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:44:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:44:44,393 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 17:44:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:44,908 INFO L93 Difference]: Finished difference Result 202 states and 267 transitions. [2022-10-16 17:44:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:44:44,909 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 17:44:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:44,911 INFO L225 Difference]: With dead ends: 202 [2022-10-16 17:44:44,911 INFO L226 Difference]: Without dead ends: 137 [2022-10-16 17:44:44,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-10-16 17:44:44,913 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 143 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:44:44,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:44:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-16 17:44:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2022-10-16 17:44:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2022-10-16 17:44:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2022-10-16 17:44:44,927 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2022-10-16 17:44:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:44,928 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2022-10-16 17:44:44,928 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 17:44:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2022-10-16 17:44:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 17:44:44,929 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:44,929 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:44,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-16 17:44:45,143 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 17:44:45,144 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:45,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1193456114, now seen corresponding path program 2 times [2022-10-16 17:44:45,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:45,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230194183] [2022-10-16 17:44:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:45,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:45,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:44:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:44:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:44:45,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:45,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230194183] [2022-10-16 17:44:45,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230194183] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:45,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276799539] [2022-10-16 17:44:45,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:44:45,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:45,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:45,270 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 17:44:45,280 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 17:44:45,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:44:45,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:44:45,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:44:45,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:44:45,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:44:45,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276799539] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:45,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:44:45,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:44:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672324192] [2022-10-16 17:44:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:45,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:44:45,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:44:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:44:45,360 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:44:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:45,388 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2022-10-16 17:44:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:44:45,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-10-16 17:44:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:45,391 INFO L225 Difference]: With dead ends: 132 [2022-10-16 17:44:45,391 INFO L226 Difference]: Without dead ends: 131 [2022-10-16 17:44:45,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:44:45,392 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 17:44:45,393 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 17:44:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-16 17:44:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2022-10-16 17:44:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2022-10-16 17:44:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2022-10-16 17:44:45,405 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2022-10-16 17:44:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:45,406 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2022-10-16 17:44:45,406 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 17:44:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2022-10-16 17:44:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 17:44:45,407 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:45,407 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:45,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:44:45,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:45,618 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:45,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566201, now seen corresponding path program 1 times [2022-10-16 17:44:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:45,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343474890] [2022-10-16 17:44:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:45,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:44:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:45,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:44:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:44:45,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:45,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343474890] [2022-10-16 17:44:45,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343474890] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:45,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750871921] [2022-10-16 17:44:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:45,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:45,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:45,742 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 17:44:45,745 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 17:44:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:45,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:44:45,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:44:45,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:44:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:44:46,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750871921] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:44:46,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:44:46,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-10-16 17:44:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334047252] [2022-10-16 17:44:46,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:44:46,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:44:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:44:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:44:46,179 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:44:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:47,048 INFO L93 Difference]: Finished difference Result 353 states and 473 transitions. [2022-10-16 17:44:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 17:44:47,049 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2022-10-16 17:44:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:47,051 INFO L225 Difference]: With dead ends: 353 [2022-10-16 17:44:47,051 INFO L226 Difference]: Without dead ends: 243 [2022-10-16 17:44:47,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:44:47,054 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 252 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:44:47,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1061 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:44:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-10-16 17:44:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2022-10-16 17:44:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 171 states have (on average 1.1578947368421053) internal successors, (198), 174 states have internal predecessors, (198), 29 states have call successors, (29), 12 states have call predecessors, (29), 15 states have return successors, (48), 32 states have call predecessors, (48), 28 states have call successors, (48) [2022-10-16 17:44:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 275 transitions. [2022-10-16 17:44:47,074 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 275 transitions. Word has length 43 [2022-10-16 17:44:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:47,074 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 275 transitions. [2022-10-16 17:44:47,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:44:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 275 transitions. [2022-10-16 17:44:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 17:44:47,076 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:47,076 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:47,109 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 17:44:47,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 17:44:47,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:47,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash 512153854, now seen corresponding path program 1 times [2022-10-16 17:44:47,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:47,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972114232] [2022-10-16 17:44:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:47,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:44:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:44:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-10-16 17:44:47,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:47,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972114232] [2022-10-16 17:44:47,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972114232] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:47,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359516780] [2022-10-16 17:44:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:47,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:47,457 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 17:44:47,480 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 17:44:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:47,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-16 17:44:47,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:44:47,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:44:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:44:48,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359516780] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:44:48,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:44:48,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 23, 23] total 47 [2022-10-16 17:44:48,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535122051] [2022-10-16 17:44:48,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:44:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:44:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:48,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:44:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:44:48,437 INFO L87 Difference]: Start difference. First operand 219 states and 275 transitions. Second operand has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:44:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:50,123 INFO L93 Difference]: Finished difference Result 681 states and 909 transitions. [2022-10-16 17:44:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:44:50,124 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 72 [2022-10-16 17:44:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:50,129 INFO L225 Difference]: With dead ends: 681 [2022-10-16 17:44:50,129 INFO L226 Difference]: Without dead ends: 483 [2022-10-16 17:44:50,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=567, Invalid=3855, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:44:50,135 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 617 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:44:50,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2028 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:44:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-10-16 17:44:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 436. [2022-10-16 17:44:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 345 states have (on average 1.1594202898550725) internal successors, (400), 347 states have internal predecessors, (400), 58 states have call successors, (58), 26 states have call predecessors, (58), 29 states have return successors, (81), 62 states have call predecessors, (81), 57 states have call successors, (81) [2022-10-16 17:44:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 539 transitions. [2022-10-16 17:44:50,170 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 539 transitions. Word has length 72 [2022-10-16 17:44:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:50,170 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 539 transitions. [2022-10-16 17:44:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:44:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 539 transitions. [2022-10-16 17:44:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:44:50,172 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:50,172 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:50,210 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 17:44:50,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:50,387 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1802141276, now seen corresponding path program 2 times [2022-10-16 17:44:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:50,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839216782] [2022-10-16 17:44:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:44:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:44:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:44:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:50,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839216782] [2022-10-16 17:44:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839216782] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577192227] [2022-10-16 17:44:50,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:44:50,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:50,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:50,583 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 17:44:50,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:44:50,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:44:50,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:44:50,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:44:50,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:44:50,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:44:50,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577192227] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:50,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:44:50,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:44:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320651670] [2022-10-16 17:44:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:44:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:44:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:44:50,698 INFO L87 Difference]: Start difference. First operand 436 states and 539 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:44:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:50,741 INFO L93 Difference]: Finished difference Result 447 states and 552 transitions. [2022-10-16 17:44:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:44:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 120 [2022-10-16 17:44:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:50,746 INFO L225 Difference]: With dead ends: 447 [2022-10-16 17:44:50,746 INFO L226 Difference]: Without dead ends: 446 [2022-10-16 17:44:50,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:44:50,748 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:44:50,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:44:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-10-16 17:44:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2022-10-16 17:44:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 349 states have (on average 1.157593123209169) internal successors, (404), 349 states have internal predecessors, (404), 58 states have call successors, (58), 26 states have call predecessors, (58), 29 states have return successors, (81), 64 states have call predecessors, (81), 57 states have call successors, (81) [2022-10-16 17:44:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 543 transitions. [2022-10-16 17:44:50,785 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 543 transitions. Word has length 120 [2022-10-16 17:44:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:50,785 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 543 transitions. [2022-10-16 17:44:50,785 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 17:44:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 543 transitions. [2022-10-16 17:44:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-16 17:44:50,787 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:50,787 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:50,830 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 17:44:51,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:51,001 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -31804611, now seen corresponding path program 1 times [2022-10-16 17:44:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:51,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25000573] [2022-10-16 17:44:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:51,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:44:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:44:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:44:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:51,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25000573] [2022-10-16 17:44:51,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25000573] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287501896] [2022-10-16 17:44:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:51,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:51,164 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 17:44:51,184 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 17:44:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:51,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 17:44:51,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 20 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:44:51,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:44:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:44:52,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287501896] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:44:52,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:44:52,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 39, 39] total 79 [2022-10-16 17:44:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032272160] [2022-10-16 17:44:52,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:44:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-10-16 17:44:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-10-16 17:44:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=5441, Unknown=0, NotChecked=0, Total=6162 [2022-10-16 17:44:52,953 INFO L87 Difference]: Start difference. First operand 440 states and 543 transitions. Second operand has 79 states, 77 states have (on average 2.7532467532467533) internal successors, (212), 45 states have internal predecessors, (212), 39 states have call successors, (42), 36 states have call predecessors, (42), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:44:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:55,679 INFO L93 Difference]: Finished difference Result 1893 states and 2484 transitions. [2022-10-16 17:44:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-10-16 17:44:55,679 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 77 states have (on average 2.7532467532467533) internal successors, (212), 45 states have internal predecessors, (212), 39 states have call successors, (42), 36 states have call predecessors, (42), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 121 [2022-10-16 17:44:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:55,689 INFO L225 Difference]: With dead ends: 1893 [2022-10-16 17:44:55,689 INFO L226 Difference]: Without dead ends: 1474 [2022-10-16 17:44:55,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4087 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1667, Invalid=11215, Unknown=0, NotChecked=0, Total=12882 [2022-10-16 17:44:55,700 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1197 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:44:55,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 2331 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2828 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:44:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-10-16 17:44:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1393. [2022-10-16 17:44:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1112 states have (on average 1.164568345323741) internal successors, (1295), 1111 states have internal predecessors, (1295), 184 states have call successors, (184), 90 states have call predecessors, (184), 93 states have return successors, (205), 191 states have call predecessors, (205), 183 states have call successors, (205) [2022-10-16 17:44:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1684 transitions. [2022-10-16 17:44:55,780 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1684 transitions. Word has length 121 [2022-10-16 17:44:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:55,780 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1684 transitions. [2022-10-16 17:44:55,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 77 states have (on average 2.7532467532467533) internal successors, (212), 45 states have internal predecessors, (212), 39 states have call successors, (42), 36 states have call predecessors, (42), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:44:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1684 transitions. [2022-10-16 17:44:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-16 17:44:55,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:55,782 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:44:55,812 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 17:44:55,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 17:44:55,992 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash -940572937, now seen corresponding path program 1 times [2022-10-16 17:44:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:55,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656629782] [2022-10-16 17:44:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:55,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:44:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-16 17:44:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-10-16 17:44:56,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:56,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656629782] [2022-10-16 17:44:56,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656629782] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:44:56,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:44:56,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:44:56,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833924765] [2022-10-16 17:44:56,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:44:56,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:44:56,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:56,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:44:56,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:44:56,191 INFO L87 Difference]: Start difference. First operand 1393 states and 1684 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 17:44:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:44:56,264 INFO L93 Difference]: Finished difference Result 1406 states and 1697 transitions. [2022-10-16 17:44:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:44:56,264 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 127 [2022-10-16 17:44:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:44:56,273 INFO L225 Difference]: With dead ends: 1406 [2022-10-16 17:44:56,273 INFO L226 Difference]: Without dead ends: 1404 [2022-10-16 17:44:56,274 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 17:44:56,275 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 5 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:44:56,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:44:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-10-16 17:44:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1389. [2022-10-16 17:44:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1109 states have (on average 1.1650135256988279) internal successors, (1292), 1108 states have internal predecessors, (1292), 183 states have call successors, (183), 90 states have call predecessors, (183), 93 states have return successors, (202), 190 states have call predecessors, (202), 182 states have call successors, (202) [2022-10-16 17:44:56,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1677 transitions. [2022-10-16 17:44:56,363 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1677 transitions. Word has length 127 [2022-10-16 17:44:56,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:44:56,363 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 1677 transitions. [2022-10-16 17:44:56,364 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 17:44:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1677 transitions. [2022-10-16 17:44:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-16 17:44:56,366 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:44:56,366 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 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 17:44:56,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-16 17:44:56,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:44:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:44:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash -325383419, now seen corresponding path program 1 times [2022-10-16 17:44:56,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:44:56,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417565314] [2022-10-16 17:44:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:44:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:44:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-10-16 17:44:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:44:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:44:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-10-16 17:44:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:44:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417565314] [2022-10-16 17:44:56,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417565314] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:44:56,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011501442] [2022-10-16 17:44:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:44:56,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:44:56,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:44:56,524 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 17:44:56,547 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 17:44:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:44:56,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-16 17:44:56,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:44:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 94 proven. 450 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:44:57,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:44:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 0 proven. 543 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:44:58,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011501442] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:44:58,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:44:58,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 41, 41] total 82 [2022-10-16 17:44:58,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484715692] [2022-10-16 17:44:58,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:44:58,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-10-16 17:44:58,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:44:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-10-16 17:44:58,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=5847, Unknown=0, NotChecked=0, Total=6642 [2022-10-16 17:44:58,441 INFO L87 Difference]: Start difference. First operand 1389 states and 1677 transitions. Second operand has 82 states, 80 states have (on average 2.9375) internal successors, (235), 46 states have internal predecessors, (235), 41 states have call successors, (47), 38 states have call predecessors, (47), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 17:45:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:01,388 INFO L93 Difference]: Finished difference Result 2845 states and 3542 transitions. [2022-10-16 17:45:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-10-16 17:45:01,389 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 2.9375) internal successors, (235), 46 states have internal predecessors, (235), 41 states have call successors, (47), 38 states have call predecessors, (47), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 144 [2022-10-16 17:45:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:01,399 INFO L225 Difference]: With dead ends: 2845 [2022-10-16 17:45:01,399 INFO L226 Difference]: Without dead ends: 1513 [2022-10-16 17:45:01,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4518 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1844, Invalid=11962, Unknown=0, NotChecked=0, Total=13806 [2022-10-16 17:45:01,414 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1253 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 3669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:01,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 2694 Invalid, 3669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-16 17:45:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-10-16 17:45:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1435. [2022-10-16 17:45:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1146 states have (on average 1.1631762652705062) internal successors, (1333), 1144 states have internal predecessors, (1333), 190 states have call successors, (190), 92 states have call predecessors, (190), 95 states have return successors, (217), 198 states have call predecessors, (217), 189 states have call successors, (217) [2022-10-16 17:45:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1740 transitions. [2022-10-16 17:45:01,489 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1740 transitions. Word has length 144 [2022-10-16 17:45:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:01,490 INFO L495 AbstractCegarLoop]: Abstraction has 1435 states and 1740 transitions. [2022-10-16 17:45:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 2.9375) internal successors, (235), 46 states have internal predecessors, (235), 41 states have call successors, (47), 38 states have call predecessors, (47), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 17:45:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1740 transitions. [2022-10-16 17:45:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-10-16 17:45:01,492 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:01,493 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:01,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-16 17:45:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:45:01,707 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1690900223, now seen corresponding path program 1 times [2022-10-16 17:45:01,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:01,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941033524] [2022-10-16 17:45:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:01,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:45:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-16 17:45:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 562 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:45:02,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:02,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941033524] [2022-10-16 17:45:02,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941033524] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45368798] [2022-10-16 17:45:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:02,925 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 17:45:02,940 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 17:45:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:03,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-16 17:45:03,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 104 proven. 459 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:45:03,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 562 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:45:03,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45368798] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:03,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:03,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 43 [2022-10-16 17:45:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315706174] [2022-10-16 17:45:03,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:03,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-16 17:45:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-16 17:45:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1566, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:45:03,851 INFO L87 Difference]: Start difference. First operand 1435 states and 1740 transitions. Second operand has 43 states, 42 states have (on average 3.357142857142857) internal successors, (141), 25 states have internal predecessors, (141), 21 states have call successors, (25), 20 states have call predecessors, (25), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-16 17:45:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:05,374 INFO L93 Difference]: Finished difference Result 3299 states and 3974 transitions. [2022-10-16 17:45:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:45:05,375 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 3.357142857142857) internal successors, (141), 25 states have internal predecessors, (141), 21 states have call successors, (25), 20 states have call predecessors, (25), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 146 [2022-10-16 17:45:05,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:05,387 INFO L225 Difference]: With dead ends: 3299 [2022-10-16 17:45:05,387 INFO L226 Difference]: Without dead ends: 1921 [2022-10-16 17:45:05,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 278 SyntacticMatches, 38 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=561, Invalid=3221, Unknown=0, NotChecked=0, Total=3782 [2022-10-16 17:45:05,395 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 557 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:05,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1872 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:45:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2022-10-16 17:45:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1885. [2022-10-16 17:45:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1506 states have (on average 1.1640106241699868) internal successors, (1753), 1504 states have internal predecessors, (1753), 250 states have call successors, (250), 122 states have call predecessors, (250), 125 states have return successors, (279), 258 states have call predecessors, (279), 249 states have call successors, (279) [2022-10-16 17:45:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2282 transitions. [2022-10-16 17:45:05,495 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2282 transitions. Word has length 146 [2022-10-16 17:45:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:05,495 INFO L495 AbstractCegarLoop]: Abstraction has 1885 states and 2282 transitions. [2022-10-16 17:45:05,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 3.357142857142857) internal successors, (141), 25 states have internal predecessors, (141), 21 states have call successors, (25), 20 states have call predecessors, (25), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-16 17:45:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2282 transitions. [2022-10-16 17:45:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-10-16 17:45:05,498 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:05,498 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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 17:45:05,536 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 17:45:05,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 17:45:05,711 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1673230989, now seen corresponding path program 1 times [2022-10-16 17:45:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:05,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895249860] [2022-10-16 17:45:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:05,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:45:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-10-16 17:45:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-10-16 17:45:05,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:05,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895249860] [2022-10-16 17:45:05,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895249860] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:05,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806649134] [2022-10-16 17:45:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:05,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:05,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:05,855 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 17:45:05,878 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 17:45:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:05,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjunts are in the unsatisfiable core [2022-10-16 17:45:05,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:45:06,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:06,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806649134] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:06,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:06,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4] total 48 [2022-10-16 17:45:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928551232] [2022-10-16 17:45:06,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:06,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-10-16 17:45:06,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-10-16 17:45:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1962, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:45:06,757 INFO L87 Difference]: Start difference. First operand 1885 states and 2282 transitions. Second operand has 45 states, 44 states have (on average 2.909090909090909) internal successors, (128), 24 states have internal predecessors, (128), 22 states have call successors, (25), 22 states have call predecessors, (25), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:45:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:08,502 INFO L93 Difference]: Finished difference Result 4287 states and 5537 transitions. [2022-10-16 17:45:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 17:45:08,502 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.909090909090909) internal successors, (128), 24 states have internal predecessors, (128), 22 states have call successors, (25), 22 states have call predecessors, (25), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2022-10-16 17:45:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:08,518 INFO L225 Difference]: With dead ends: 4287 [2022-10-16 17:45:08,518 INFO L226 Difference]: Without dead ends: 2513 [2022-10-16 17:45:08,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1092, Invalid=5550, Unknown=0, NotChecked=0, Total=6642 [2022-10-16 17:45:08,535 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 981 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 2641 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:08,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 439 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2641 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:45:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-10-16 17:45:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2479. [2022-10-16 17:45:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1982 states have (on average 1.1599394550958628) internal successors, (2299), 1968 states have internal predecessors, (2299), 323 states have call successors, (323), 151 states have call predecessors, (323), 170 states have return successors, (437), 359 states have call predecessors, (437), 322 states have call successors, (437) [2022-10-16 17:45:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3059 transitions. [2022-10-16 17:45:08,665 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3059 transitions. Word has length 162 [2022-10-16 17:45:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:08,666 INFO L495 AbstractCegarLoop]: Abstraction has 2479 states and 3059 transitions. [2022-10-16 17:45:08,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.909090909090909) internal successors, (128), 24 states have internal predecessors, (128), 22 states have call successors, (25), 22 states have call predecessors, (25), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:45:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3059 transitions. [2022-10-16 17:45:08,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-10-16 17:45:08,668 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:08,668 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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 17:45:08,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:08,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1779356439, now seen corresponding path program 2 times [2022-10-16 17:45:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862486605] [2022-10-16 17:45:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:45:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-10-16 17:45:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2022-10-16 17:45:09,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:09,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862486605] [2022-10-16 17:45:09,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862486605] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:09,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024686580] [2022-10-16 17:45:09,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:45:09,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:09,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:09,024 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 17:45:09,046 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 17:45:09,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:45:09,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:45:09,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 42 conjunts are in the unsatisfiable core [2022-10-16 17:45:09,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 98 proven. 504 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:45:09,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 601 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:45:10,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024686580] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:10,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:10,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 43, 43] total 47 [2022-10-16 17:45:10,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849152250] [2022-10-16 17:45:10,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:10,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:45:10,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:45:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:45:10,780 INFO L87 Difference]: Start difference. First operand 2479 states and 3059 transitions. Second operand has 47 states, 46 states have (on average 3.239130434782609) internal successors, (149), 28 states have internal predecessors, (149), 23 states have call successors, (29), 21 states have call predecessors, (29), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:45:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:12,747 INFO L93 Difference]: Finished difference Result 4965 states and 6123 transitions. [2022-10-16 17:45:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-16 17:45:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.239130434782609) internal successors, (149), 28 states have internal predecessors, (149), 23 states have call successors, (29), 21 states have call predecessors, (29), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 150 [2022-10-16 17:45:12,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:12,769 INFO L225 Difference]: With dead ends: 4965 [2022-10-16 17:45:12,769 INFO L226 Difference]: Without dead ends: 2597 [2022-10-16 17:45:12,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 245 SyntacticMatches, 40 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=608, Invalid=3814, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:45:12,781 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 549 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:12,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 2591 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:45:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2022-10-16 17:45:12,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2523. [2022-10-16 17:45:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2017 states have (on average 1.158155676747645) internal successors, (2336), 2001 states have internal predecessors, (2336), 331 states have call successors, (331), 152 states have call predecessors, (331), 171 states have return successors, (460), 369 states have call predecessors, (460), 330 states have call successors, (460) [2022-10-16 17:45:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3127 transitions. [2022-10-16 17:45:12,942 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3127 transitions. Word has length 150 [2022-10-16 17:45:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:12,942 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 3127 transitions. [2022-10-16 17:45:12,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.239130434782609) internal successors, (149), 28 states have internal predecessors, (149), 23 states have call successors, (29), 21 states have call predecessors, (29), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:45:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3127 transitions. [2022-10-16 17:45:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-10-16 17:45:12,946 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:12,946 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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 17:45:12,975 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 17:45:13,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:13,160 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1205717458, now seen corresponding path program 1 times [2022-10-16 17:45:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:13,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764076056] [2022-10-16 17:45:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:14,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:45:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-16 17:45:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 489 proven. 124 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:45:14,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:14,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764076056] [2022-10-16 17:45:14,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764076056] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:14,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436919792] [2022-10-16 17:45:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:14,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:14,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:14,259 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 17:45:14,277 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 17:45:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:14,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjunts are in the unsatisfiable core [2022-10-16 17:45:14,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 490 proven. 121 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:45:14,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 490 proven. 121 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:45:15,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436919792] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:15,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:15,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 43, 43] total 48 [2022-10-16 17:45:15,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250113836] [2022-10-16 17:45:15,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:15,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:45:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:45:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1988, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:45:15,363 INFO L87 Difference]: Start difference. First operand 2523 states and 3127 transitions. Second operand has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 29 states have internal predecessors, (137), 23 states have call successors, (25), 20 states have call predecessors, (25), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:45:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:17,957 INFO L93 Difference]: Finished difference Result 5198 states and 6810 transitions. [2022-10-16 17:45:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-10-16 17:45:17,957 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 29 states have internal predecessors, (137), 23 states have call successors, (25), 20 states have call predecessors, (25), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 151 [2022-10-16 17:45:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:17,976 INFO L225 Difference]: With dead ends: 5198 [2022-10-16 17:45:17,977 INFO L226 Difference]: Without dead ends: 2774 [2022-10-16 17:45:17,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 298 SyntacticMatches, 40 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3848 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1694, Invalid=8008, Unknown=0, NotChecked=0, Total=9702 [2022-10-16 17:45:17,994 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1294 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:17,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 506 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 17:45:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-10-16 17:45:18,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2588. [2022-10-16 17:45:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2588 states, 2066 states have (on average 1.159244917715392) internal successors, (2395), 2057 states have internal predecessors, (2395), 339 states have call successors, (339), 158 states have call predecessors, (339), 179 states have return successors, (457), 372 states have call predecessors, (457), 338 states have call successors, (457) [2022-10-16 17:45:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3191 transitions. [2022-10-16 17:45:18,141 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3191 transitions. Word has length 151 [2022-10-16 17:45:18,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:18,141 INFO L495 AbstractCegarLoop]: Abstraction has 2588 states and 3191 transitions. [2022-10-16 17:45:18,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.9148936170212765) internal successors, (137), 29 states have internal predecessors, (137), 23 states have call successors, (25), 20 states have call predecessors, (25), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:45:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3191 transitions. [2022-10-16 17:45:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-10-16 17:45:18,143 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:18,144 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:18,185 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 17:45:18,359 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,SelfDestructingSolverStorable20 [2022-10-16 17:45:18,360 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1820072193, now seen corresponding path program 2 times [2022-10-16 17:45:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72089581] [2022-10-16 17:45:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:45:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-10-16 17:45:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2022-10-16 17:45:18,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:18,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72089581] [2022-10-16 17:45:18,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72089581] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:18,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:18,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 17:45:18,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556814850] [2022-10-16 17:45:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:18,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 17:45:18,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 17:45:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:45:18,603 INFO L87 Difference]: Start difference. First operand 2588 states and 3191 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 17:45:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:18,753 INFO L93 Difference]: Finished difference Result 2797 states and 3516 transitions. [2022-10-16 17:45:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:45:18,756 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 146 [2022-10-16 17:45:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:18,776 INFO L225 Difference]: With dead ends: 2797 [2022-10-16 17:45:18,776 INFO L226 Difference]: Without dead ends: 2796 [2022-10-16 17:45:18,778 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 17:45:18,779 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:18,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 255 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:45:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2022-10-16 17:45:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2662. [2022-10-16 17:45:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2125 states have (on average 1.1548235294117648) internal successors, (2454), 2111 states have internal predecessors, (2454), 350 states have call successors, (350), 158 states have call predecessors, (350), 183 states have return successors, (524), 392 states have call predecessors, (524), 349 states have call successors, (524) [2022-10-16 17:45:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3328 transitions. [2022-10-16 17:45:18,934 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3328 transitions. Word has length 146 [2022-10-16 17:45:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:18,935 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3328 transitions. [2022-10-16 17:45:18,935 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 17:45:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3328 transitions. [2022-10-16 17:45:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-10-16 17:45:18,937 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:18,937 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-16 17:45:18,937 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 587663206, now seen corresponding path program 1 times [2022-10-16 17:45:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:18,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295536608] [2022-10-16 17:45:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:18,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:45:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-10-16 17:45:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-10-16 17:45:19,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:19,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295536608] [2022-10-16 17:45:19,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295536608] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:19,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:19,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:19,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510683800] [2022-10-16 17:45:19,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:19,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:19,069 INFO L87 Difference]: Start difference. First operand 2662 states and 3328 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 17:45:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:19,176 INFO L93 Difference]: Finished difference Result 2763 states and 3462 transitions. [2022-10-16 17:45:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:19,176 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 147 [2022-10-16 17:45:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:19,195 INFO L225 Difference]: With dead ends: 2763 [2022-10-16 17:45:19,195 INFO L226 Difference]: Without dead ends: 2759 [2022-10-16 17:45:19,197 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 17:45:19,198 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:19,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:19,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2022-10-16 17:45:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2692. [2022-10-16 17:45:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2155 states have (on average 1.160092807424594) internal successors, (2500), 2129 states have internal predecessors, (2500), 350 states have call successors, (350), 158 states have call predecessors, (350), 183 states have return successors, (521), 404 states have call predecessors, (521), 349 states have call successors, (521) [2022-10-16 17:45:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3371 transitions. [2022-10-16 17:45:19,378 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3371 transitions. Word has length 147 [2022-10-16 17:45:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:19,379 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 3371 transitions. [2022-10-16 17:45:19,379 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 17:45:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3371 transitions. [2022-10-16 17:45:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-10-16 17:45:19,381 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:19,381 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-10-16 17:45:19,382 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1628909500, now seen corresponding path program 1 times [2022-10-16 17:45:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:19,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493725157] [2022-10-16 17:45:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:45:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-10-16 17:45:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 446 proven. 189 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 17:45:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:20,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493725157] [2022-10-16 17:45:20,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493725157] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503810454] [2022-10-16 17:45:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:20,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:20,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:20,534 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:20,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 17:45:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:20,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:45:20,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-10-16 17:45:20,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:20,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503810454] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:20,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:20,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [43] total 53 [2022-10-16 17:45:20,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930292387] [2022-10-16 17:45:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:20,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:45:20,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:45:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2497, Unknown=0, NotChecked=0, Total=2756 [2022-10-16 17:45:20,909 INFO L87 Difference]: Start difference. First operand 2692 states and 3371 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:45:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:21,131 INFO L93 Difference]: Finished difference Result 3280 states and 4377 transitions. [2022-10-16 17:45:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:45:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 164 [2022-10-16 17:45:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:21,155 INFO L225 Difference]: With dead ends: 3280 [2022-10-16 17:45:21,155 INFO L226 Difference]: Without dead ends: 3279 [2022-10-16 17:45:21,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=2497, Unknown=0, NotChecked=0, Total=2756 [2022-10-16 17:45:21,159 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 18 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:21,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 394 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:45:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-10-16 17:45:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2982. [2022-10-16 17:45:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2389 states have (on average 1.1515278359146086) internal successors, (2751), 2347 states have internal predecessors, (2751), 380 states have call successors, (380), 158 states have call predecessors, (380), 209 states have return successors, (793), 476 states have call predecessors, (793), 379 states have call successors, (793) [2022-10-16 17:45:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 3924 transitions. [2022-10-16 17:45:21,361 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 3924 transitions. Word has length 164 [2022-10-16 17:45:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:21,362 INFO L495 AbstractCegarLoop]: Abstraction has 2982 states and 3924 transitions. [2022-10-16 17:45:21,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:45:21,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 3924 transitions. [2022-10-16 17:45:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-10-16 17:45:21,365 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:21,365 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:21,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:21,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:21,580 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1043412981, now seen corresponding path program 1 times [2022-10-16 17:45:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:21,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156033117] [2022-10-16 17:45:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:45:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-10-16 17:45:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 446 proven. 189 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 17:45:22,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:22,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156033117] [2022-10-16 17:45:22,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156033117] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:22,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898517084] [2022-10-16 17:45:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:22,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:22,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:22,665 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:22,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 17:45:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:22,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:45:22,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2022-10-16 17:45:22,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-10-16 17:45:23,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898517084] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:23,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:23,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 8, 7] total 55 [2022-10-16 17:45:23,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425129138] [2022-10-16 17:45:23,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:23,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-10-16 17:45:23,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-10-16 17:45:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2705, Unknown=0, NotChecked=0, Total=2970 [2022-10-16 17:45:23,337 INFO L87 Difference]: Start difference. First operand 2982 states and 3924 transitions. Second operand has 55 states, 54 states have (on average 3.0) internal successors, (162), 37 states have internal predecessors, (162), 25 states have call successors, (30), 19 states have call predecessors, (30), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:45:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:30,211 INFO L93 Difference]: Finished difference Result 6497 states and 9342 transitions. [2022-10-16 17:45:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-10-16 17:45:30,212 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.0) internal successors, (162), 37 states have internal predecessors, (162), 25 states have call successors, (30), 19 states have call predecessors, (30), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 165 [2022-10-16 17:45:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:30,237 INFO L225 Difference]: With dead ends: 6497 [2022-10-16 17:45:30,237 INFO L226 Difference]: Without dead ends: 3597 [2022-10-16 17:45:30,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10852 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4771, Invalid=28535, Unknown=0, NotChecked=0, Total=33306 [2022-10-16 17:45:30,260 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1263 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 5927 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 6786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 5927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:30,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 450 Invalid, 6786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 5927 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-16 17:45:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2022-10-16 17:45:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 2962. [2022-10-16 17:45:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 2367 states have (on average 1.1478664976763837) internal successors, (2717), 2334 states have internal predecessors, (2717), 379 states have call successors, (379), 158 states have call predecessors, (379), 212 states have return successors, (879), 469 states have call predecessors, (879), 378 states have call successors, (879) [2022-10-16 17:45:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 3975 transitions. [2022-10-16 17:45:30,451 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 3975 transitions. Word has length 165 [2022-10-16 17:45:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:30,452 INFO L495 AbstractCegarLoop]: Abstraction has 2962 states and 3975 transitions. [2022-10-16 17:45:30,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.0) internal successors, (162), 37 states have internal predecessors, (162), 25 states have call successors, (30), 19 states have call predecessors, (30), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:45:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 3975 transitions. [2022-10-16 17:45:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-10-16 17:45:30,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:30,454 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:30,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:30,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:30,668 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1102889100, now seen corresponding path program 1 times [2022-10-16 17:45:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:30,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321167353] [2022-10-16 17:45:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:30,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:30,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:45:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-10-16 17:45:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-10-16 17:45:31,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:31,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321167353] [2022-10-16 17:45:31,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321167353] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:31,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55682682] [2022-10-16 17:45:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:31,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:31,143 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:31,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 17:45:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:31,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:45:31,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-10-16 17:45:31,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-10-16 17:45:31,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55682682] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:31,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:31,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-10-16 17:45:31,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063483187] [2022-10-16 17:45:31,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:31,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:45:31,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:31,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:45:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:45:31,849 INFO L87 Difference]: Start difference. First operand 2962 states and 3975 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 17:45:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:32,361 INFO L93 Difference]: Finished difference Result 4439 states and 6752 transitions. [2022-10-16 17:45:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-10-16 17:45:32,362 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 179 [2022-10-16 17:45:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:32,384 INFO L225 Difference]: With dead ends: 4439 [2022-10-16 17:45:32,384 INFO L226 Difference]: Without dead ends: 4437 [2022-10-16 17:45:32,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 357 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=1510, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:45:32,389 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 62 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:32,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 517 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:45:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2022-10-16 17:45:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 3538. [2022-10-16 17:45:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 2834 states have (on average 1.139378969654199) internal successors, (3229), 2770 states have internal predecessors, (3229), 439 states have call successors, (439), 158 states have call predecessors, (439), 261 states have return successors, (1563), 609 states have call predecessors, (1563), 438 states have call successors, (1563) [2022-10-16 17:45:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5231 transitions. [2022-10-16 17:45:32,697 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5231 transitions. Word has length 179 [2022-10-16 17:45:32,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:32,698 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5231 transitions. [2022-10-16 17:45:32,698 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 17:45:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5231 transitions. [2022-10-16 17:45:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-10-16 17:45:32,701 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:32,701 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:32,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:32,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 17:45:32,915 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 170176365, now seen corresponding path program 1 times [2022-10-16 17:45:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:32,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891615791] [2022-10-16 17:45:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:45:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-10-16 17:45:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-10-16 17:45:33,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:33,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891615791] [2022-10-16 17:45:33,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891615791] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:33,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418242489] [2022-10-16 17:45:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:33,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:33,344 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:33,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 17:45:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:33,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:45:33,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-10-16 17:45:33,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-10-16 17:45:34,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418242489] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:34,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:34,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-10-16 17:45:34,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760646892] [2022-10-16 17:45:34,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-16 17:45:34,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:34,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-16 17:45:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-10-16 17:45:34,082 INFO L87 Difference]: Start difference. First operand 3538 states and 5231 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 17:45:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:34,958 INFO L93 Difference]: Finished difference Result 11343 states and 21450 transitions. [2022-10-16 17:45:34,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:45:34,958 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 180 [2022-10-16 17:45:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:35,036 INFO L225 Difference]: With dead ends: 11343 [2022-10-16 17:45:35,037 INFO L226 Difference]: Without dead ends: 11334 [2022-10-16 17:45:35,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 359 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=369, Invalid=1983, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 17:45:35,051 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 62 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:35,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 694 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:45:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2022-10-16 17:45:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 8029. [2022-10-16 17:45:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8029 states, 6433 states have (on average 1.1259132597543915) internal successors, (7243), 6192 states have internal predecessors, (7243), 851 states have call successors, (851), 158 states have call predecessors, (851), 741 states have return successors, (7388), 1678 states have call predecessors, (7388), 850 states have call successors, (7388) [2022-10-16 17:45:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8029 states to 8029 states and 15482 transitions. [2022-10-16 17:45:35,799 INFO L78 Accepts]: Start accepts. Automaton has 8029 states and 15482 transitions. Word has length 180 [2022-10-16 17:45:35,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:35,800 INFO L495 AbstractCegarLoop]: Abstraction has 8029 states and 15482 transitions. [2022-10-16 17:45:35,800 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 17:45:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 8029 states and 15482 transitions. [2022-10-16 17:45:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-10-16 17:45:35,804 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:35,804 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 14, 13, 13, 13, 13, 12, 11, 11, 11, 11, 10, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:35,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:36,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 17:45:36,017 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:36,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash -669502531, now seen corresponding path program 2 times [2022-10-16 17:45:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:36,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591916522] [2022-10-16 17:45:36,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:36,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-16 17:45:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:45:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:45:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-10-16 17:45:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:45:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-10-16 17:45:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1295 trivial. 0 not checked. [2022-10-16 17:45:36,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:36,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591916522] [2022-10-16 17:45:36,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591916522] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:36,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:36,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:36,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619135719] [2022-10-16 17:45:36,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:36,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:36,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:36,232 INFO L87 Difference]: Start difference. First operand 8029 states and 15482 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 17:45:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:36,523 INFO L93 Difference]: Finished difference Result 8156 states and 15620 transitions. [2022-10-16 17:45:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 263 [2022-10-16 17:45:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:36,578 INFO L225 Difference]: With dead ends: 8156 [2022-10-16 17:45:36,578 INFO L226 Difference]: Without dead ends: 8155 [2022-10-16 17:45:36,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:36,586 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:36,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 109 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:36,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8155 states. [2022-10-16 17:45:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8155 to 8029. [2022-10-16 17:45:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8029 states, 6433 states have (on average 1.1235815327219028) internal successors, (7228), 6192 states have internal predecessors, (7228), 851 states have call successors, (851), 158 states have call predecessors, (851), 741 states have return successors, (7388), 1678 states have call predecessors, (7388), 850 states have call successors, (7388) [2022-10-16 17:45:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8029 states to 8029 states and 15467 transitions. [2022-10-16 17:45:37,391 INFO L78 Accepts]: Start accepts. Automaton has 8029 states and 15467 transitions. Word has length 263 [2022-10-16 17:45:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:37,392 INFO L495 AbstractCegarLoop]: Abstraction has 8029 states and 15467 transitions. [2022-10-16 17:45:37,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 17:45:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8029 states and 15467 transitions. [2022-10-16 17:45:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-10-16 17:45:37,395 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:37,396 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 13, 12, 12, 12, 12, 11, 11, 11, 11, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2022-10-16 17:45:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-10-16 17:45:37,396 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:37,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:37,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1711505527, now seen corresponding path program 3 times [2022-10-16 17:45:37,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:37,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109269309] [2022-10-16 17:45:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-16 17:45:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:45:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-10-16 17:45:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:45:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-10-16 17:45:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2022-10-16 17:45:37,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:37,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109269309] [2022-10-16 17:45:37,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109269309] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:37,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:37,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:37,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237196645] [2022-10-16 17:45:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:37,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:37,602 INFO L87 Difference]: Start difference. First operand 8029 states and 15467 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 17:45:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:37,936 INFO L93 Difference]: Finished difference Result 8206 states and 15675 transitions. [2022-10-16 17:45:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:37,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 246 [2022-10-16 17:45:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:37,993 INFO L225 Difference]: With dead ends: 8206 [2022-10-16 17:45:37,993 INFO L226 Difference]: Without dead ends: 8205 [2022-10-16 17:45:38,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:38,003 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:38,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 145 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:38,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2022-10-16 17:45:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8029. [2022-10-16 17:45:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8029 states, 6433 states have (on average 1.1235815327219028) internal successors, (7228), 6192 states have internal predecessors, (7228), 851 states have call successors, (851), 158 states have call predecessors, (851), 741 states have return successors, (7388), 1678 states have call predecessors, (7388), 850 states have call successors, (7388) [2022-10-16 17:45:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8029 states to 8029 states and 15467 transitions. [2022-10-16 17:45:38,746 INFO L78 Accepts]: Start accepts. Automaton has 8029 states and 15467 transitions. Word has length 246 [2022-10-16 17:45:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:38,747 INFO L495 AbstractCegarLoop]: Abstraction has 8029 states and 15467 transitions. [2022-10-16 17:45:38,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 17:45:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 8029 states and 15467 transitions. [2022-10-16 17:45:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-10-16 17:45:38,750 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:38,750 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:38,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-10-16 17:45:38,750 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -767779223, now seen corresponding path program 1 times [2022-10-16 17:45:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570489456] [2022-10-16 17:45:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:38,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-16 17:45:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:45:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-10-16 17:45:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:45:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:45:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:45:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 455 proven. 523 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-10-16 17:45:39,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570489456] [2022-10-16 17:45:39,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570489456] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817120245] [2022-10-16 17:45:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:39,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:39,864 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:39,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 17:45:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:39,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-16 17:45:39,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 462 proven. 527 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-10-16 17:45:40,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 462 proven. 528 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-10-16 17:45:41,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817120245] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:41,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:41,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40, 41] total 47 [2022-10-16 17:45:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824281783] [2022-10-16 17:45:41,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:41,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:45:41,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:45:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1940, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:45:41,208 INFO L87 Difference]: Start difference. First operand 8029 states and 15467 transitions. Second operand has 47 states, 46 states have (on average 3.847826086956522) internal successors, (177), 31 states have internal predecessors, (177), 25 states have call successors, (32), 17 states have call predecessors, (32), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2022-10-16 17:45:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:44,611 INFO L93 Difference]: Finished difference Result 11313 states and 22630 transitions. [2022-10-16 17:45:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-10-16 17:45:44,611 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.847826086956522) internal successors, (177), 31 states have internal predecessors, (177), 25 states have call successors, (32), 17 states have call predecessors, (32), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) Word has length 250 [2022-10-16 17:45:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:44,632 INFO L225 Difference]: With dead ends: 11313 [2022-10-16 17:45:44,632 INFO L226 Difference]: Without dead ends: 3422 [2022-10-16 17:45:44,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 510 SyntacticMatches, 36 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4625 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2079, Invalid=10577, Unknown=0, NotChecked=0, Total=12656 [2022-10-16 17:45:44,702 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1563 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 3639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:44,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 474 Invalid, 3639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 2973 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:45:44,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-10-16 17:45:45,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3201. [2022-10-16 17:45:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 2542 states have (on average 1.0712037765538946) internal successors, (2723), 2529 states have internal predecessors, (2723), 409 states have call successors, (409), 169 states have call predecessors, (409), 248 states have return successors, (931), 502 states have call predecessors, (931), 408 states have call successors, (931) [2022-10-16 17:45:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4063 transitions. [2022-10-16 17:45:45,034 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4063 transitions. Word has length 250 [2022-10-16 17:45:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:45,036 INFO L495 AbstractCegarLoop]: Abstraction has 3201 states and 4063 transitions. [2022-10-16 17:45:45,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.847826086956522) internal successors, (177), 31 states have internal predecessors, (177), 25 states have call successors, (32), 17 states have call predecessors, (32), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2022-10-16 17:45:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4063 transitions. [2022-10-16 17:45:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-10-16 17:45:45,038 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:45,039 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 13, 11, 11, 11, 11, 11, 11, 11, 11, 8, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 17:45:45,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:45,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:45,253 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1019310644, now seen corresponding path program 2 times [2022-10-16 17:45:45,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:45,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488932584] [2022-10-16 17:45:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:45,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:45,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-16 17:45:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:45:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-10-16 17:45:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-10-16 17:45:46,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:46,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488932584] [2022-10-16 17:45:46,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488932584] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:46,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101694778] [2022-10-16 17:45:46,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:45:46,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:46,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:46,270 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:46,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 17:45:46,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:45:46,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:45:46,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:45:46,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-10-16 17:45:46,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 74 proven. 51 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-10-16 17:45:47,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101694778] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:47,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:47,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2022-10-16 17:45:47,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237745335] [2022-10-16 17:45:47,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:47,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-16 17:45:47,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-16 17:45:47,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:45:47,974 INFO L87 Difference]: Start difference. First operand 3201 states and 4063 transitions. Second operand has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-10-16 17:45:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:48,690 INFO L93 Difference]: Finished difference Result 5291 states and 7663 transitions. [2022-10-16 17:45:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-16 17:45:48,691 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 232 [2022-10-16 17:45:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:48,719 INFO L225 Difference]: With dead ends: 5291 [2022-10-16 17:45:48,720 INFO L226 Difference]: Without dead ends: 5289 [2022-10-16 17:45:48,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 468 SyntacticMatches, 16 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=396, Invalid=2466, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:45:48,727 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 70 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:48,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 695 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:45:48,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2022-10-16 17:45:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 3821. [2022-10-16 17:45:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 3029 states have (on average 1.0577748431825684) internal successors, (3204), 3003 states have internal predecessors, (3204), 479 states have call successors, (479), 169 states have call predecessors, (479), 311 states have return successors, (1597), 648 states have call predecessors, (1597), 478 states have call successors, (1597) [2022-10-16 17:45:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5280 transitions. [2022-10-16 17:45:49,023 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5280 transitions. Word has length 232 [2022-10-16 17:45:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:49,024 INFO L495 AbstractCegarLoop]: Abstraction has 3821 states and 5280 transitions. [2022-10-16 17:45:49,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-10-16 17:45:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5280 transitions. [2022-10-16 17:45:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-10-16 17:45:49,027 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:49,027 INFO L195 NwaCegarLoop]: trace histogram [22, 20, 19, 16, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 1, 1, 1, 1] [2022-10-16 17:45:49,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:49,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:49,242 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1136447436, now seen corresponding path program 2 times [2022-10-16 17:45:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:49,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141804746] [2022-10-16 17:45:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:49,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:45:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:45:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:45:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-10-16 17:45:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:45:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-16 17:45:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 278 proven. 1154 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-10-16 17:45:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:50,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141804746] [2022-10-16 17:45:50,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141804746] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:50,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105504241] [2022-10-16 17:45:50,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:45:50,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:50,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:50,637 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:50,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 17:45:50,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:45:50,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:45:50,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 17:45:50,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1024 proven. 786 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-10-16 17:45:51,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 107 proven. 1256 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-10-16 17:45:52,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105504241] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:52,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:52,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 38, 39] total 50 [2022-10-16 17:45:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707368704] [2022-10-16 17:45:52,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:52,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-10-16 17:45:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-10-16 17:45:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2181, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:45:52,040 INFO L87 Difference]: Start difference. First operand 3821 states and 5280 transitions. Second operand has 50 states, 49 states have (on average 4.26530612244898) internal successors, (209), 35 states have internal predecessors, (209), 26 states have call successors, (39), 17 states have call predecessors, (39), 8 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2022-10-16 17:45:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:55,072 INFO L93 Difference]: Finished difference Result 10823 states and 18601 transitions. [2022-10-16 17:45:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:45:55,073 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.26530612244898) internal successors, (209), 35 states have internal predecessors, (209), 26 states have call successors, (39), 17 states have call predecessors, (39), 8 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 344 [2022-10-16 17:45:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:55,112 INFO L225 Difference]: With dead ends: 10823 [2022-10-16 17:45:55,113 INFO L226 Difference]: Without dead ends: 7109 [2022-10-16 17:45:55,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 714 SyntacticMatches, 34 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1956 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=655, Invalid=4601, Unknown=0, NotChecked=0, Total=5256 [2022-10-16 17:45:55,143 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 654 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 4092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:55,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1787 Invalid, 4092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 17:45:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7109 states. [2022-10-16 17:45:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7109 to 6266. [2022-10-16 17:45:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 4976 states have (on average 1.0753617363344052) internal successors, (5351), 4923 states have internal predecessors, (5351), 784 states have call successors, (784), 282 states have call predecessors, (784), 504 states have return successors, (3293), 1060 states have call predecessors, (3293), 781 states have call successors, (3293) [2022-10-16 17:45:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 9428 transitions. [2022-10-16 17:45:55,693 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 9428 transitions. Word has length 344 [2022-10-16 17:45:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:55,694 INFO L495 AbstractCegarLoop]: Abstraction has 6266 states and 9428 transitions. [2022-10-16 17:45:55,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.26530612244898) internal successors, (209), 35 states have internal predecessors, (209), 26 states have call successors, (39), 17 states have call predecessors, (39), 8 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2022-10-16 17:45:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 9428 transitions. [2022-10-16 17:45:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-10-16 17:45:55,699 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:55,700 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 18, 17, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1] [2022-10-16 17:45:55,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:55,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-10-16 17:45:55,913 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:55,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash 161402670, now seen corresponding path program 3 times [2022-10-16 17:45:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:55,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124920264] [2022-10-16 17:45:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:45:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:45:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:45:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:45:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-10-16 17:45:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:45:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 17:45:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:45:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1948 backedges. 518 proven. 785 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-10-16 17:45:57,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124920264] [2022-10-16 17:45:57,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124920264] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408676925] [2022-10-16 17:45:57,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:45:57,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:57,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:57,198 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:57,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 17:45:57,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-16 17:45:57,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:45:57,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:45:57,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1948 backedges. 539 proven. 4 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2022-10-16 17:45:57,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1948 backedges. 243 proven. 27 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2022-10-16 17:45:57,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408676925] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:57,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:57,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 7, 7] total 42 [2022-10-16 17:45:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383931297] [2022-10-16 17:45:57,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:57,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 17:45:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 17:45:57,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 17:45:57,794 INFO L87 Difference]: Start difference. First operand 6266 states and 9428 transitions. Second operand has 42 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 27 states have internal predecessors, (154), 19 states have call successors, (28), 17 states have call predecessors, (28), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-16 17:45:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:59,584 INFO L93 Difference]: Finished difference Result 12350 states and 21489 transitions. [2022-10-16 17:45:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 17:45:59,584 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 27 states have internal predecessors, (154), 19 states have call successors, (28), 17 states have call predecessors, (28), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 325 [2022-10-16 17:45:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:59,634 INFO L225 Difference]: With dead ends: 12350 [2022-10-16 17:45:59,634 INFO L226 Difference]: Without dead ends: 6201 [2022-10-16 17:45:59,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 708 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=855, Invalid=4257, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 17:45:59,682 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 714 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:59,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 424 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-16 17:45:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6201 states. [2022-10-16 17:46:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6201 to 6158. [2022-10-16 17:46:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 4893 states have (on average 1.073778867770284) internal successors, (5254), 4835 states have internal predecessors, (5254), 770 states have call successors, (770), 276 states have call predecessors, (770), 493 states have return successors, (3251), 1046 states have call predecessors, (3251), 767 states have call successors, (3251) [2022-10-16 17:46:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 9275 transitions. [2022-10-16 17:46:00,235 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 9275 transitions. Word has length 325 [2022-10-16 17:46:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:00,236 INFO L495 AbstractCegarLoop]: Abstraction has 6158 states and 9275 transitions. [2022-10-16 17:46:00,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 27 states have internal predecessors, (154), 19 states have call successors, (28), 17 states have call predecessors, (28), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-16 17:46:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 9275 transitions. [2022-10-16 17:46:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-10-16 17:46:00,239 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:00,240 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 19, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 3, 3, 1, 1, 1, 1] [2022-10-16 17:46:00,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-10-16 17:46:00,455 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash 852382126, now seen corresponding path program 4 times [2022-10-16 17:46:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469652528] [2022-10-16 17:46:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:00,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-10-16 17:46:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 620 proven. 945 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2022-10-16 17:46:02,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:02,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469652528] [2022-10-16 17:46:02,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469652528] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:02,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813441098] [2022-10-16 17:46:02,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:46:02,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:02,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:02,141 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:02,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 17:46:02,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:46:02,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:02,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-16 17:46:02,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 552 proven. 475 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-10-16 17:46:02,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 552 proven. 495 refuted. 0 times theorem prover too weak. 1357 trivial. 0 not checked. [2022-10-16 17:46:04,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813441098] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:04,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:04,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 16, 21] total 63 [2022-10-16 17:46:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311620372] [2022-10-16 17:46:04,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-10-16 17:46:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-10-16 17:46:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3529, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 17:46:04,368 INFO L87 Difference]: Start difference. First operand 6158 states and 9275 transitions. Second operand has 63 states, 62 states have (on average 4.387096774193548) internal successors, (272), 48 states have internal predecessors, (272), 40 states have call successors, (49), 16 states have call predecessors, (49), 13 states have return successors, (40), 17 states have call predecessors, (40), 25 states have call successors, (40) [2022-10-16 17:46:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:09,301 INFO L93 Difference]: Finished difference Result 16654 states and 31230 transitions. [2022-10-16 17:46:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-10-16 17:46:09,302 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.387096774193548) internal successors, (272), 48 states have internal predecessors, (272), 40 states have call successors, (49), 16 states have call predecessors, (49), 13 states have return successors, (40), 17 states have call predecessors, (40), 25 states have call successors, (40) Word has length 363 [2022-10-16 17:46:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:09,372 INFO L225 Difference]: With dead ends: 16654 [2022-10-16 17:46:09,373 INFO L226 Difference]: Without dead ends: 10633 [2022-10-16 17:46:09,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 770 SyntacticMatches, 10 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6712 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2845, Invalid=17747, Unknown=0, NotChecked=0, Total=20592 [2022-10-16 17:46:09,442 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1620 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 4744 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 5452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 4744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:09,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 757 Invalid, 5452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 4744 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-16 17:46:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10633 states. [2022-10-16 17:46:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 9848. [2022-10-16 17:46:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9848 states, 7832 states have (on average 1.08158835546476) internal successors, (8471), 7776 states have internal predecessors, (8471), 1242 states have call successors, (1242), 477 states have call predecessors, (1242), 772 states have return successors, (5311), 1594 states have call predecessors, (5311), 1241 states have call successors, (5311) [2022-10-16 17:46:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9848 states to 9848 states and 15024 transitions. [2022-10-16 17:46:10,288 INFO L78 Accepts]: Start accepts. Automaton has 9848 states and 15024 transitions. Word has length 363 [2022-10-16 17:46:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:10,289 INFO L495 AbstractCegarLoop]: Abstraction has 9848 states and 15024 transitions. [2022-10-16 17:46:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 4.387096774193548) internal successors, (272), 48 states have internal predecessors, (272), 40 states have call successors, (49), 16 states have call predecessors, (49), 13 states have return successors, (40), 17 states have call predecessors, (40), 25 states have call successors, (40) [2022-10-16 17:46:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 9848 states and 15024 transitions. [2022-10-16 17:46:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-10-16 17:46:10,292 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:10,293 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 18, 18, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1] [2022-10-16 17:46:10,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:10,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:10,506 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:10,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:10,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1076566180, now seen corresponding path program 5 times [2022-10-16 17:46:10,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:10,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365908844] [2022-10-16 17:46:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:10,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-10-16 17:46:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 17:46:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2173 backedges. 598 proven. 877 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2022-10-16 17:46:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:11,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365908844] [2022-10-16 17:46:11,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365908844] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:11,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316452437] [2022-10-16 17:46:11,998 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:46:11,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:11,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:12,004 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:12,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 17:46:12,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-10-16 17:46:12,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:12,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-16 17:46:12,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2173 backedges. 566 proven. 350 refuted. 0 times theorem prover too weak. 1257 trivial. 0 not checked. [2022-10-16 17:46:12,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2173 backedges. 566 proven. 369 refuted. 0 times theorem prover too weak. 1238 trivial. 0 not checked. [2022-10-16 17:46:14,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316452437] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:14,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:14,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 16, 21] total 62 [2022-10-16 17:46:14,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541617620] [2022-10-16 17:46:14,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:14,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-16 17:46:14,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-16 17:46:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3452, Unknown=0, NotChecked=0, Total=3782 [2022-10-16 17:46:14,382 INFO L87 Difference]: Start difference. First operand 9848 states and 15024 transitions. Second operand has 62 states, 61 states have (on average 4.245901639344262) internal successors, (259), 47 states have internal predecessors, (259), 39 states have call successors, (47), 16 states have call predecessors, (47), 12 states have return successors, (38), 15 states have call predecessors, (38), 24 states have call successors, (38) [2022-10-16 17:46:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:19,014 INFO L93 Difference]: Finished difference Result 21490 states and 37809 transitions. [2022-10-16 17:46:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-10-16 17:46:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 4.245901639344262) internal successors, (259), 47 states have internal predecessors, (259), 39 states have call successors, (47), 16 states have call predecessors, (47), 12 states have return successors, (38), 15 states have call predecessors, (38), 24 states have call successors, (38) Word has length 344 [2022-10-16 17:46:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:19,088 INFO L225 Difference]: With dead ends: 21490 [2022-10-16 17:46:19,089 INFO L226 Difference]: Without dead ends: 11805 [2022-10-16 17:46:19,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 725 SyntacticMatches, 10 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6017 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2632, Invalid=16550, Unknown=0, NotChecked=0, Total=19182 [2022-10-16 17:46:19,168 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1725 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:19,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 518 Invalid, 4220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-16 17:46:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11805 states. [2022-10-16 17:46:19,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11805 to 10259. [2022-10-16 17:46:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10259 states, 8152 states have (on average 1.0823110893032384) internal successors, (8823), 8107 states have internal predecessors, (8823), 1313 states have call successors, (1313), 509 states have call predecessors, (1313), 792 states have return successors, (5441), 1642 states have call predecessors, (5441), 1312 states have call successors, (5441) [2022-10-16 17:46:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 15577 transitions. [2022-10-16 17:46:20,013 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 15577 transitions. Word has length 344 [2022-10-16 17:46:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:20,014 INFO L495 AbstractCegarLoop]: Abstraction has 10259 states and 15577 transitions. [2022-10-16 17:46:20,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 4.245901639344262) internal successors, (259), 47 states have internal predecessors, (259), 39 states have call successors, (47), 16 states have call predecessors, (47), 12 states have return successors, (38), 15 states have call predecessors, (38), 24 states have call successors, (38) [2022-10-16 17:46:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 15577 transitions. [2022-10-16 17:46:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-10-16 17:46:20,017 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:20,017 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 17, 17, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2022-10-16 17:46:20,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-10-16 17:46:20,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:20,224 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1905107491, now seen corresponding path program 6 times [2022-10-16 17:46:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:20,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316369197] [2022-10-16 17:46:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-10-16 17:46:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 1607 trivial. 0 not checked. [2022-10-16 17:46:22,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:22,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316369197] [2022-10-16 17:46:22,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316369197] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:22,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972352147] [2022-10-16 17:46:22,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:46:22,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:22,093 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:22,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 17:46:22,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-10-16 17:46:22,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:22,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 49 conjunts are in the unsatisfiable core [2022-10-16 17:46:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 1607 trivial. 0 not checked. [2022-10-16 17:46:22,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 218 proven. 155 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2022-10-16 17:46:25,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972352147] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:25,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:25,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2022-10-16 17:46:25,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18516212] [2022-10-16 17:46:25,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:25,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:46:25,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:25,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:46:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:46:25,700 INFO L87 Difference]: Start difference. First operand 10259 states and 15577 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-10-16 17:46:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:26,398 INFO L93 Difference]: Finished difference Result 11528 states and 18137 transitions. [2022-10-16 17:46:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 17:46:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 324 [2022-10-16 17:46:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:26,451 INFO L225 Difference]: With dead ends: 11528 [2022-10-16 17:46:26,452 INFO L226 Difference]: Without dead ends: 11526 [2022-10-16 17:46:26,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 664 SyntacticMatches, 33 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=332, Invalid=2320, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 17:46:26,466 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 39 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:26,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 896 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11526 states. [2022-10-16 17:46:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11526 to 10821. [2022-10-16 17:46:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10821 states, 8616 states have (on average 1.0759052924791086) internal successors, (9270), 8511 states have internal predecessors, (9270), 1361 states have call successors, (1361), 509 states have call predecessors, (1361), 842 states have return successors, (6021), 1800 states have call predecessors, (6021), 1360 states have call successors, (6021) [2022-10-16 17:46:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10821 states to 10821 states and 16652 transitions. [2022-10-16 17:46:27,350 INFO L78 Accepts]: Start accepts. Automaton has 10821 states and 16652 transitions. Word has length 324 [2022-10-16 17:46:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:27,350 INFO L495 AbstractCegarLoop]: Abstraction has 10821 states and 16652 transitions. [2022-10-16 17:46:27,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-10-16 17:46:27,351 INFO L276 IsEmpty]: Start isEmpty. Operand 10821 states and 16652 transitions. [2022-10-16 17:46:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-10-16 17:46:27,355 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:27,356 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 26, 25, 24, 22, 18, 18, 18, 18, 18, 18, 18, 18, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 7, 5, 4, 1, 1, 1, 1] [2022-10-16 17:46:27,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-10-16 17:46:27,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-10-16 17:46:27,568 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1120309674, now seen corresponding path program 3 times [2022-10-16 17:46:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:27,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514422174] [2022-10-16 17:46:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:27,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 17:46:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:46:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-10-16 17:46:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:46:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5135 backedges. 1181 proven. 1509 refuted. 0 times theorem prover too weak. 2445 trivial. 0 not checked. [2022-10-16 17:46:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514422174] [2022-10-16 17:46:29,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514422174] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273382674] [2022-10-16 17:46:29,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:46:29,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:29,547 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:29,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 17:46:29,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-16 17:46:29,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:29,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 17:46:29,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5135 backedges. 1039 proven. 106 refuted. 0 times theorem prover too weak. 3990 trivial. 0 not checked. [2022-10-16 17:46:29,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5135 backedges. 1039 proven. 113 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2022-10-16 17:46:31,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273382674] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:31,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:31,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 13, 15] total 58 [2022-10-16 17:46:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625547545] [2022-10-16 17:46:31,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:31,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:46:31,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:31,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:46:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2981, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:31,330 INFO L87 Difference]: Start difference. First operand 10821 states and 16652 transitions. Second operand has 58 states, 57 states have (on average 4.087719298245614) internal successors, (233), 44 states have internal predecessors, (233), 32 states have call successors, (43), 15 states have call predecessors, (43), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) [2022-10-16 17:46:35,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:35,742 INFO L93 Difference]: Finished difference Result 22998 states and 40525 transitions. [2022-10-16 17:46:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-10-16 17:46:35,743 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 4.087719298245614) internal successors, (233), 44 states have internal predecessors, (233), 32 states have call successors, (43), 15 states have call predecessors, (43), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) Word has length 534 [2022-10-16 17:46:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:35,809 INFO L225 Difference]: With dead ends: 22998 [2022-10-16 17:46:35,809 INFO L226 Difference]: Without dead ends: 12346 [2022-10-16 17:46:35,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1292 GetRequests, 1153 SyntacticMatches, 7 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5691 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2353, Invalid=15469, Unknown=0, NotChecked=0, Total=17822 [2022-10-16 17:46:35,887 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1272 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:35,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 659 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 3725 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-16 17:46:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12346 states. [2022-10-16 17:46:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12346 to 10583. [2022-10-16 17:46:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10583 states, 8431 states have (on average 1.073775352864429) internal successors, (9053), 8359 states have internal predecessors, (9053), 1324 states have call successors, (1324), 537 states have call predecessors, (1324), 826 states have return successors, (5544), 1686 states have call predecessors, (5544), 1323 states have call successors, (5544) [2022-10-16 17:46:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10583 states to 10583 states and 15921 transitions. [2022-10-16 17:46:36,929 INFO L78 Accepts]: Start accepts. Automaton has 10583 states and 15921 transitions. Word has length 534 [2022-10-16 17:46:36,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:36,929 INFO L495 AbstractCegarLoop]: Abstraction has 10583 states and 15921 transitions. [2022-10-16 17:46:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 4.087719298245614) internal successors, (233), 44 states have internal predecessors, (233), 32 states have call successors, (43), 15 states have call predecessors, (43), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) [2022-10-16 17:46:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10583 states and 15921 transitions. [2022-10-16 17:46:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-10-16 17:46:36,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:36,933 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 23, 23, 20, 20, 17, 17, 17, 17, 16, 16, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2022-10-16 17:46:36,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:37,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-10-16 17:46:37,134 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:37,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash 609242956, now seen corresponding path program 4 times [2022-10-16 17:46:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:37,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493013638] [2022-10-16 17:46:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 17:46:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:46:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-10-16 17:46:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 3111 trivial. 0 not checked. [2022-10-16 17:46:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:40,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493013638] [2022-10-16 17:46:40,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493013638] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:40,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807341671] [2022-10-16 17:46:40,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:46:40,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:40,878 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:40,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 17:46:41,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:46:41,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:41,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 81 conjunts are in the unsatisfiable core [2022-10-16 17:46:41,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 3111 trivial. 0 not checked. [2022-10-16 17:46:41,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 585 proven. 459 refuted. 0 times theorem prover too weak. 3015 trivial. 0 not checked. [2022-10-16 17:46:49,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807341671] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:49,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:49,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 37] total 58 [2022-10-16 17:46:49,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619713560] [2022-10-16 17:46:49,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:49,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-10-16 17:46:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:49,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-10-16 17:46:49,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=3007, Unknown=0, NotChecked=0, Total=3422 [2022-10-16 17:46:49,348 INFO L87 Difference]: Start difference. First operand 10583 states and 15921 transitions. Second operand has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-10-16 17:46:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:50,420 INFO L93 Difference]: Finished difference Result 13443 states and 22526 transitions. [2022-10-16 17:46:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-10-16 17:46:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) Word has length 475 [2022-10-16 17:46:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:50,498 INFO L225 Difference]: With dead ends: 13443 [2022-10-16 17:46:50,498 INFO L226 Difference]: Without dead ends: 13441 [2022-10-16 17:46:50,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 990 SyntacticMatches, 62 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=581, Invalid=4249, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 17:46:50,513 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 59 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:50,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1036 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:46:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2022-10-16 17:46:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 11385. [2022-10-16 17:46:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11385 states, 9075 states have (on average 1.0639118457300276) internal successors, (9655), 8957 states have internal predecessors, (9655), 1404 states have call successors, (1404), 537 states have call predecessors, (1404), 904 states have return successors, (6704), 1890 states have call predecessors, (6704), 1403 states have call successors, (6704) [2022-10-16 17:46:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11385 states to 11385 states and 17763 transitions. [2022-10-16 17:46:51,278 INFO L78 Accepts]: Start accepts. Automaton has 11385 states and 17763 transitions. Word has length 475 [2022-10-16 17:46:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:51,278 INFO L495 AbstractCegarLoop]: Abstraction has 11385 states and 17763 transitions. [2022-10-16 17:46:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-10-16 17:46:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11385 states and 17763 transitions. [2022-10-16 17:46:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2022-10-16 17:46:51,285 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:51,286 INFO L195 NwaCegarLoop]: trace histogram [47, 44, 40, 39, 38, 37, 26, 26, 26, 26, 25, 25, 25, 25, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 18, 13, 12, 10, 5, 1, 1, 1, 1] [2022-10-16 17:46:51,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-10-16 17:46:51,487 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1080459870, now seen corresponding path program 7 times [2022-10-16 17:46:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:51,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500005080] [2022-10-16 17:46:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 17:46:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:46:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-10-16 17:46:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-10-16 17:46:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-16 17:46:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-10-16 17:46:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:46:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:46:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12811 backedges. 1936 proven. 2873 refuted. 0 times theorem prover too weak. 8002 trivial. 0 not checked. [2022-10-16 17:46:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:53,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500005080] [2022-10-16 17:46:53,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500005080] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:53,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060809496] [2022-10-16 17:46:53,930 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 17:46:53,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:53,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:53,939 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:53,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 17:46:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:54,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-16 17:46:54,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12811 backedges. 1455 proven. 2722 refuted. 0 times theorem prover too weak. 8634 trivial. 0 not checked. [2022-10-16 17:46:54,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12811 backedges. 1459 proven. 2740 refuted. 0 times theorem prover too weak. 8612 trivial. 0 not checked. [2022-10-16 17:46:57,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060809496] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:57,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:57,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 37, 41] total 58 [2022-10-16 17:46:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811473923] [2022-10-16 17:46:57,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:57,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:46:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:57,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:46:57,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2962, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:57,068 INFO L87 Difference]: Start difference. First operand 11385 states and 17763 transitions. Second operand has 58 states, 57 states have (on average 4.228070175438597) internal successors, (241), 45 states have internal predecessors, (241), 36 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (39), 21 states have call predecessors, (39), 23 states have call successors, (39) [2022-10-16 17:47:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:02,006 INFO L93 Difference]: Finished difference Result 23680 states and 44036 transitions. [2022-10-16 17:47:02,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-10-16 17:47:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 4.228070175438597) internal successors, (241), 45 states have internal predecessors, (241), 36 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (39), 21 states have call predecessors, (39), 23 states have call successors, (39) Word has length 842 [2022-10-16 17:47:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:02,082 INFO L225 Difference]: With dead ends: 23680 [2022-10-16 17:47:02,082 INFO L226 Difference]: Without dead ends: 12440 [2022-10-16 17:47:02,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1984 GetRequests, 1808 SyntacticMatches, 33 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7840 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2717, Invalid=18163, Unknown=0, NotChecked=0, Total=20880 [2022-10-16 17:47:02,163 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1212 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 4212 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 4212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:02,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 926 Invalid, 5002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 4212 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-16 17:47:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12440 states. [2022-10-16 17:47:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12440 to 10363. [2022-10-16 17:47:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10363 states, 8269 states have (on average 1.0671181521344781) internal successors, (8824), 8174 states have internal predecessors, (8824), 1306 states have call successors, (1306), 541 states have call predecessors, (1306), 786 states have return successors, (5729), 1647 states have call predecessors, (5729), 1305 states have call successors, (5729) [2022-10-16 17:47:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10363 states to 10363 states and 15859 transitions. [2022-10-16 17:47:02,995 INFO L78 Accepts]: Start accepts. Automaton has 10363 states and 15859 transitions. Word has length 842 [2022-10-16 17:47:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:02,996 INFO L495 AbstractCegarLoop]: Abstraction has 10363 states and 15859 transitions. [2022-10-16 17:47:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 4.228070175438597) internal successors, (241), 45 states have internal predecessors, (241), 36 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (39), 21 states have call predecessors, (39), 23 states have call successors, (39) [2022-10-16 17:47:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 10363 states and 15859 transitions. [2022-10-16 17:47:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-10-16 17:47:03,001 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:03,001 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 34, 33, 33, 32, 23, 23, 23, 23, 22, 22, 22, 22, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1] [2022-10-16 17:47:03,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-10-16 17:47:03,202 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:03,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash -455410708, now seen corresponding path program 8 times [2022-10-16 17:47:03,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:03,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723521142] [2022-10-16 17:47:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:03,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 17:47:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:47:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-10-16 17:47:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-10-16 17:47:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:47:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9440 backedges. 1237 proven. 1424 refuted. 0 times theorem prover too weak. 6779 trivial. 0 not checked. [2022-10-16 17:47:09,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:09,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723521142] [2022-10-16 17:47:09,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723521142] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:09,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982621768] [2022-10-16 17:47:09,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:47:09,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:09,726 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:09,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 17:47:10,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:47:10,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:10,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 133 conjunts are in the unsatisfiable core [2022-10-16 17:47:10,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9440 backedges. 1237 proven. 1424 refuted. 0 times theorem prover too weak. 6779 trivial. 0 not checked. [2022-10-16 17:47:11,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9440 backedges. 1543 proven. 1300 refuted. 0 times theorem prover too weak. 6597 trivial. 0 not checked. [2022-10-16 17:47:29,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982621768] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:29,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:29,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 46] total 69 [2022-10-16 17:47:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143871773] [2022-10-16 17:47:29,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:29,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-10-16 17:47:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-10-16 17:47:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=4261, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 17:47:29,741 INFO L87 Difference]: Start difference. First operand 10363 states and 15859 transitions. Second operand has 70 states, 69 states have (on average 2.579710144927536) internal successors, (178), 70 states have internal predecessors, (178), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2022-10-16 17:47:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:30,939 INFO L93 Difference]: Finished difference Result 12675 states and 21026 transitions. [2022-10-16 17:47:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-10-16 17:47:30,939 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.579710144927536) internal successors, (178), 70 states have internal predecessors, (178), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) Word has length 724 [2022-10-16 17:47:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:30,990 INFO L225 Difference]: With dead ends: 12675 [2022-10-16 17:47:30,990 INFO L226 Difference]: Without dead ends: 12673 [2022-10-16 17:47:30,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1722 GetRequests, 1532 SyntacticMatches, 111 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9338 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=743, Invalid=5737, Unknown=0, NotChecked=0, Total=6480 [2022-10-16 17:47:30,999 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 83 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:30,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1070 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:47:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12673 states. [2022-10-16 17:47:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12673 to 10954. [2022-10-16 17:47:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10954 states, 8742 states have (on average 1.0555936856554564) internal successors, (9228), 8626 states have internal predecessors, (9228), 1347 states have call successors, (1347), 541 states have call predecessors, (1347), 863 states have return successors, (6822), 1786 states have call predecessors, (6822), 1346 states have call successors, (6822) [2022-10-16 17:47:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10954 states to 10954 states and 17397 transitions. [2022-10-16 17:47:31,654 INFO L78 Accepts]: Start accepts. Automaton has 10954 states and 17397 transitions. Word has length 724 [2022-10-16 17:47:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:31,654 INFO L495 AbstractCegarLoop]: Abstraction has 10954 states and 17397 transitions. [2022-10-16 17:47:31,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.579710144927536) internal successors, (178), 70 states have internal predecessors, (178), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2022-10-16 17:47:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10954 states and 17397 transitions. [2022-10-16 17:47:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2022-10-16 17:47:31,665 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:31,666 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 56, 56, 51, 51, 34, 34, 34, 34, 33, 33, 33, 33, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 27, 27, 18, 17, 11, 11, 1, 1, 1, 1] [2022-10-16 17:47:31,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:31,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-10-16 17:47:31,867 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash -79129934, now seen corresponding path program 5 times [2022-10-16 17:47:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:31,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562932891] [2022-10-16 17:47:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-16 17:47:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:47:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-10-16 17:47:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-10-16 17:47:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:47:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2022-10-16 17:47:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:47:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-10-16 17:47:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-10-16 17:47:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 4168 proven. 3725 refuted. 0 times theorem prover too weak. 16913 trivial. 0 not checked. [2022-10-16 17:47:35,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:35,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562932891] [2022-10-16 17:47:35,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562932891] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:35,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379866581] [2022-10-16 17:47:35,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:47:35,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:35,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:35,394 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:35,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-16 17:47:36,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 38 check-sat command(s) [2022-10-16 17:47:36,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:36,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 17:47:36,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 2769 proven. 2928 refuted. 0 times theorem prover too weak. 19109 trivial. 0 not checked. [2022-10-16 17:47:36,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 2773 proven. 2986 refuted. 0 times theorem prover too weak. 19047 trivial. 0 not checked. [2022-10-16 17:47:40,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379866581] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:40,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:40,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 20, 29] total 74 [2022-10-16 17:47:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547949660] [2022-10-16 17:47:40,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:40,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-10-16 17:47:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-10-16 17:47:40,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=4853, Unknown=0, NotChecked=0, Total=5402 [2022-10-16 17:47:40,861 INFO L87 Difference]: Start difference. First operand 10954 states and 17397 transitions. Second operand has 74 states, 73 states have (on average 4.657534246575342) internal successors, (340), 62 states have internal predecessors, (340), 48 states have call successors, (60), 13 states have call predecessors, (60), 21 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) [2022-10-16 17:47:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:48,287 INFO L93 Difference]: Finished difference Result 24481 states and 45419 transitions. [2022-10-16 17:47:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-10-16 17:47:48,288 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 4.657534246575342) internal successors, (340), 62 states have internal predecessors, (340), 48 states have call successors, (60), 13 states have call predecessors, (60), 21 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) Word has length 1169 [2022-10-16 17:47:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:48,356 INFO L225 Difference]: With dead ends: 24481 [2022-10-16 17:47:48,356 INFO L226 Difference]: Without dead ends: 13697 [2022-10-16 17:47:48,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2726 GetRequests, 2538 SyntacticMatches, 14 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10504 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4332, Invalid=26468, Unknown=0, NotChecked=0, Total=30800 [2022-10-16 17:47:48,436 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1561 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 7393 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 8289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 7393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:48,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 1557 Invalid, 8289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 7393 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-10-16 17:47:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13697 states. [2022-10-16 17:47:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13697 to 11521. [2022-10-16 17:47:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11521 states, 9222 states have (on average 1.0538928648883106) internal successors, (9719), 9143 states have internal predecessors, (9719), 1479 states have call successors, (1479), 712 states have call predecessors, (1479), 818 states have return successors, (5220), 1665 states have call predecessors, (5220), 1478 states have call successors, (5220) [2022-10-16 17:47:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 16418 transitions. [2022-10-16 17:47:49,276 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 16418 transitions. Word has length 1169 [2022-10-16 17:47:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:49,277 INFO L495 AbstractCegarLoop]: Abstraction has 11521 states and 16418 transitions. [2022-10-16 17:47:49,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 4.657534246575342) internal successors, (340), 62 states have internal predecessors, (340), 48 states have call successors, (60), 13 states have call predecessors, (60), 21 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) [2022-10-16 17:47:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 16418 transitions. [2022-10-16 17:47:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2022-10-16 17:47:49,290 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:49,291 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 54, 54, 50, 49, 33, 33, 33, 33, 32, 32, 32, 32, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 17, 17, 11, 10, 1, 1, 1, 1] [2022-10-16 17:47:49,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:49,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:49,506 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash -846871645, now seen corresponding path program 6 times [2022-10-16 17:47:49,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:49,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57043393] [2022-10-16 17:47:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-16 17:47:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-10-16 17:48:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-10-16 17:48:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:02,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2022-10-16 17:48:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat