./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 21:14:08,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:14:08,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:14:08,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:14:08,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:14:08,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:14:08,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:14:08,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:14:08,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:14:08,127 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:14:08,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:14:08,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:14:08,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:14:08,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:14:08,130 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:14:08,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:14:08,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:14:08,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:14:08,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:14:08,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:14:08,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:14:08,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:14:08,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:14:08,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:14:08,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:14:08,136 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:14:08,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:14:08,137 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:14:08,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:14:08,137 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:14:08,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:14:08,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:14:08,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:14:08,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:14:08,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:14:08,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:14:08,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:14:08,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:14:08,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:14:08,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:14:08,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:14:08,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:14:08,142 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:14:08,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:14:08,142 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2024-10-11 21:14:08,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:14:08,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:14:08,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:14:08,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:14:08,433 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:14:08,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-10-11 21:14:09,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:14:10,028 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:14:10,029 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-10-11 21:14:10,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c7b3ecabf/d93364ecf7ba4f87b1e78c503356a10c/FLAG7c6dc969a [2024-10-11 21:14:10,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c7b3ecabf/d93364ecf7ba4f87b1e78c503356a10c [2024-10-11 21:14:10,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:14:10,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:14:10,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:14:10,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:14:10,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:14:10,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4b6be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10, skipping insertion in model container [2024-10-11 21:14:10,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:14:10,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:14:10,256 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:14:10,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:14:10,285 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:14:10,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10 WrapperNode [2024-10-11 21:14:10,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:14:10,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:14:10,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:14:10,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:14:10,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,311 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-10-11 21:14:10,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:14:10,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:14:10,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:14:10,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:14:10,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,331 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 21:14:10,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:14:10,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:14:10,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:14:10,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:14:10,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (1/1) ... [2024-10-11 21:14:10,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:14:10,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:10,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:14:10,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:14:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:14:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:14:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-10-11 21:14:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-10-11 21:14:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-10-11 21:14:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-10-11 21:14:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:14:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:14:10,492 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:14:10,496 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:14:10,681 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-10-11 21:14:10,681 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:14:10,753 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:14:10,753 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 21:14:10,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:14:10 BoogieIcfgContainer [2024-10-11 21:14:10,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:14:10,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:14:10,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:14:10,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:14:10,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:14:10" (1/3) ... [2024-10-11 21:14:10,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151b8c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:14:10, skipping insertion in model container [2024-10-11 21:14:10,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:14:10" (2/3) ... [2024-10-11 21:14:10,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151b8c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:14:10, skipping insertion in model container [2024-10-11 21:14:10,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:14:10" (3/3) ... [2024-10-11 21:14:10,767 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-10-11 21:14:10,837 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:14:10,840 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-11 21:14:10,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:14:10,922 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c23c98a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:14:10,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-11 21:14:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 40 states have internal predecessors, (45), 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) [2024-10-11 21:14:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 21:14:10,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:10,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 21:14:10,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:10,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1021543012, now seen corresponding path program 1 times [2024-10-11 21:14:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:10,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111493045] [2024-10-11 21:14:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:10,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111493045] [2024-10-11 21:14:11,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111493045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:11,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:11,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 21:14:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128731046] [2024-10-11 21:14:11,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:11,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 21:14:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 21:14:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 21:14:11,169 INFO L87 Difference]: Start difference. First operand has 48 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 40 states have internal predecessors, (45), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:11,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:11,230 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-10-11 21:14:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 21:14:11,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2024-10-11 21:14:11,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:11,238 INFO L225 Difference]: With dead ends: 52 [2024-10-11 21:14:11,238 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 21:14:11,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 21:14:11,243 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:11,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 21:14:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-10-11 21:14:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.56) internal successors, (39), 35 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 21:14:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-10-11 21:14:11,281 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 6 [2024-10-11 21:14:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:11,281 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-10-11 21:14:11,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-10-11 21:14:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 21:14:11,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:11,283 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:11,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:14:11,283 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:11,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1603062213, now seen corresponding path program 1 times [2024-10-11 21:14:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941469103] [2024-10-11 21:14:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:11,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941469103] [2024-10-11 21:14:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941469103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:11,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:11,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 21:14:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695463784] [2024-10-11 21:14:11,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:11,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:11,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:11,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:11,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:11,356 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2024-10-11 21:14:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:11,466 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2024-10-11 21:14:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2024-10-11 21:14:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:11,468 INFO L225 Difference]: With dead ends: 63 [2024-10-11 21:14:11,470 INFO L226 Difference]: Without dead ends: 57 [2024-10-11 21:14:11,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:14:11,473 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 26 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:11,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 157 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-11 21:14:11,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-10-11 21:14:11,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 45 states have internal predecessors, (51), 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) [2024-10-11 21:14:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-10-11 21:14:11,485 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2024-10-11 21:14:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:11,486 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-10-11 21:14:11,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2024-10-11 21:14:11,486 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-10-11 21:14:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-11 21:14:11,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:11,487 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:11,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:14:11,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:11,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1070030294, now seen corresponding path program 1 times [2024-10-11 21:14:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961427258] [2024-10-11 21:14:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:11,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:11,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961427258] [2024-10-11 21:14:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961427258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:11,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:11,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 21:14:11,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234047013] [2024-10-11 21:14:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:11,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 21:14:11,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 21:14:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 21:14:11,545 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-10-11 21:14:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:11,577 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-10-11 21:14:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 21:14:11,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2024-10-11 21:14:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:11,579 INFO L225 Difference]: With dead ends: 57 [2024-10-11 21:14:11,579 INFO L226 Difference]: Without dead ends: 55 [2024-10-11 21:14:11,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 21:14:11,580 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:11,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-11 21:14:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-10-11 21:14:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 43 states have internal predecessors, (49), 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) [2024-10-11 21:14:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-10-11 21:14:11,590 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2024-10-11 21:14:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:11,590 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-10-11 21:14:11,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-10-11 21:14:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-10-11 21:14:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 21:14:11,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:11,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:11,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:14:11,592 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:11,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1188799193, now seen corresponding path program 1 times [2024-10-11 21:14:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:11,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186277080] [2024-10-11 21:14:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:11,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:11,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186277080] [2024-10-11 21:14:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186277080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:11,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:14:11,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339264036] [2024-10-11 21:14:11,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:11,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:14:11,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:11,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:14:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:14:11,721 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2024-10-11 21:14:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:11,894 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2024-10-11 21:14:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:14:11,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 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 [2024-10-11 21:14:11,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:11,896 INFO L225 Difference]: With dead ends: 57 [2024-10-11 21:14:11,896 INFO L226 Difference]: Without dead ends: 53 [2024-10-11 21:14:11,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:14:11,897 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:11,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 91 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-11 21:14:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-10-11 21:14:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 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) [2024-10-11 21:14:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2024-10-11 21:14:11,914 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 13 [2024-10-11 21:14:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:11,915 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2024-10-11 21:14:11,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2024-10-11 21:14:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2024-10-11 21:14:11,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 21:14:11,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:11,920 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:11,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 21:14:11,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:11,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1317113808, now seen corresponding path program 1 times [2024-10-11 21:14:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827659395] [2024-10-11 21:14:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:12,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:12,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-11 21:14:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:14:12,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:12,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827659395] [2024-10-11 21:14:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827659395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:12,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:12,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:12,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707901558] [2024-10-11 21:14:12,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:12,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:12,130 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:12,201 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-10-11 21:14:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 22 [2024-10-11 21:14:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:12,204 INFO L225 Difference]: With dead ends: 73 [2024-10-11 21:14:12,204 INFO L226 Difference]: Without dead ends: 68 [2024-10-11 21:14:12,204 INFO L431 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 [2024-10-11 21:14:12,206 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:12,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-11 21:14:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2024-10-11 21:14:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 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) [2024-10-11 21:14:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-10-11 21:14:12,231 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 22 [2024-10-11 21:14:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:12,232 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-10-11 21:14:12,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-10-11 21:14:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 21:14:12,233 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:12,233 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:12,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 21:14:12,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:12,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2108197165, now seen corresponding path program 1 times [2024-10-11 21:14:12,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:12,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568648133] [2024-10-11 21:14:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:12,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:12,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-11 21:14:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 21:14:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568648133] [2024-10-11 21:14:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568648133] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171897007] [2024-10-11 21:14:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:12,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:12,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:12,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:12,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:14:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:12,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 21:14:12,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:12,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:14:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171897007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:12,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:14:12,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-10-11 21:14:12,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578500989] [2024-10-11 21:14:12,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:12,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:14:12,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:12,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:14:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-11 21:14:12,587 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-10-11 21:14:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:12,705 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2024-10-11 21:14:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:14:12,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 23 [2024-10-11 21:14:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:12,707 INFO L225 Difference]: With dead ends: 112 [2024-10-11 21:14:12,707 INFO L226 Difference]: Without dead ends: 62 [2024-10-11 21:14:12,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:14:12,709 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:12,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 142 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:12,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-11 21:14:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2024-10-11 21:14:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 46 states have internal predecessors, (52), 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) [2024-10-11 21:14:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-10-11 21:14:12,722 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 23 [2024-10-11 21:14:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:12,723 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-10-11 21:14:12,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-10-11 21:14:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-10-11 21:14:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 21:14:12,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:12,724 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:12,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 21:14:12,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:12,926 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:12,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1308693282, now seen corresponding path program 1 times [2024-10-11 21:14:12,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:12,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978610593] [2024-10-11 21:14:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 21:14:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:14:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978610593] [2024-10-11 21:14:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978610593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:13,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751162513] [2024-10-11 21:14:13,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:13,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:13,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:13,064 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:13,107 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2024-10-11 21:14:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:13,108 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 24 [2024-10-11 21:14:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:13,109 INFO L225 Difference]: With dead ends: 82 [2024-10-11 21:14:13,109 INFO L226 Difference]: Without dead ends: 77 [2024-10-11 21:14:13,110 INFO L431 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 [2024-10-11 21:14:13,110 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:13,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-11 21:14:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2024-10-11 21:14:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.18) internal successors, (59), 54 states have internal predecessors, (59), 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) [2024-10-11 21:14:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2024-10-11 21:14:13,128 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 24 [2024-10-11 21:14:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:13,128 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2024-10-11 21:14:13,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:14:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2024-10-11 21:14:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 21:14:13,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:13,131 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:13,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 21:14:13,131 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:13,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1559204346, now seen corresponding path program 1 times [2024-10-11 21:14:13,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:13,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063396496] [2024-10-11 21:14:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:13,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-11 21:14:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:14:13,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:13,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063396496] [2024-10-11 21:14:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063396496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:13,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:13,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566108560] [2024-10-11 21:14:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:13,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:13,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:13,214 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-10-11 21:14:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:13,247 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2024-10-11 21:14:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:13,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 28 [2024-10-11 21:14:13,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:13,249 INFO L225 Difference]: With dead ends: 82 [2024-10-11 21:14:13,249 INFO L226 Difference]: Without dead ends: 80 [2024-10-11 21:14:13,249 INFO L431 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 [2024-10-11 21:14:13,250 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 109 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 [2024-10-11 21:14:13,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 109 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-11 21:14:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2024-10-11 21:14:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 61 states have internal predecessors, (66), 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) [2024-10-11 21:14:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2024-10-11 21:14:13,268 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 28 [2024-10-11 21:14:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:13,268 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2024-10-11 21:14:13,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-10-11 21:14:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2024-10-11 21:14:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 21:14:13,269 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:13,269 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:13,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 21:14:13,270 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:13,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:13,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1102557063, now seen corresponding path program 1 times [2024-10-11 21:14:13,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:13,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949639574] [2024-10-11 21:14:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-11 21:14:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 21:14:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:13,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949639574] [2024-10-11 21:14:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949639574] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:13,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008695352] [2024-10-11 21:14:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:13,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:13,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:13,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:14:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:13,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:14:13,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:13,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 21:14:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008695352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:13,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-10-11 21:14:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079418349] [2024-10-11 21:14:13,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:13,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 21:14:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 21:14:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:14:13,692 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 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) [2024-10-11 21:14:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:14,087 INFO L93 Difference]: Finished difference Result 203 states and 274 transitions. [2024-10-11 21:14:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 21:14:14,088 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 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 29 [2024-10-11 21:14:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:14,090 INFO L225 Difference]: With dead ends: 203 [2024-10-11 21:14:14,090 INFO L226 Difference]: Without dead ends: 134 [2024-10-11 21:14:14,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-10-11 21:14:14,092 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 135 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:14,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 504 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:14:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-11 21:14:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2024-10-11 21:14:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.164835164835165) internal successors, (106), 96 states have internal predecessors, (106), 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) [2024-10-11 21:14:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 156 transitions. [2024-10-11 21:14:14,107 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 156 transitions. Word has length 29 [2024-10-11 21:14:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:14,108 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 156 transitions. [2024-10-11 21:14:14,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 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) [2024-10-11 21:14:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 156 transitions. [2024-10-11 21:14:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 21:14:14,109 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:14,109 INFO L215 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] [2024-10-11 21:14:14,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:14,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:14,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:14,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1810923195, now seen corresponding path program 2 times [2024-10-11 21:14:14,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:14,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188182265] [2024-10-11 21:14:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:14,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:14,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 21:14:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:14:14,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188182265] [2024-10-11 21:14:14,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188182265] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740924604] [2024-10-11 21:14:14,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:14:14,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:14,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:14,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:14,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:14:14,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:14:14,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:14,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 21:14:14,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:14:14,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:14:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740924604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:14,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:14:14,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 21:14:14,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447111173] [2024-10-11 21:14:14,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:14,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:14,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:14,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:14,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:14:14,502 INFO L87 Difference]: Start difference. First operand 120 states and 156 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-10-11 21:14:14,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:14,535 INFO L93 Difference]: Finished difference Result 129 states and 168 transitions. [2024-10-11 21:14:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:14,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 41 [2024-10-11 21:14:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:14,536 INFO L225 Difference]: With dead ends: 129 [2024-10-11 21:14:14,536 INFO L226 Difference]: Without dead ends: 128 [2024-10-11 21:14:14,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:14:14,537 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:14,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-11 21:14:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2024-10-11 21:14:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 98 states have internal predecessors, (110), 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) [2024-10-11 21:14:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 160 transitions. [2024-10-11 21:14:14,563 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 160 transitions. Word has length 41 [2024-10-11 21:14:14,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:14,564 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 160 transitions. [2024-10-11 21:14:14,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-10-11 21:14:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2024-10-11 21:14:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-11 21:14:14,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:14,565 INFO L215 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] [2024-10-11 21:14:14,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 21:14:14,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:14,767 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:14,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash 304044270, now seen corresponding path program 1 times [2024-10-11 21:14:14,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:14,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605342600] [2024-10-11 21:14:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:14,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:14,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:14,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 21:14:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:14:14,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:14,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605342600] [2024-10-11 21:14:14,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605342600] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:14,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394252994] [2024-10-11 21:14:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:14,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:14,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:14,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:14,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:14:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:14,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 21:14:14,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:15,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 21:14:15,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394252994] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:15,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:15,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2024-10-11 21:14:15,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065246557] [2024-10-11 21:14:15,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:15,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 21:14:15,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 21:14:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-10-11 21:14:15,271 INFO L87 Difference]: Start difference. First operand 124 states and 160 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:14:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:15,734 INFO L93 Difference]: Finished difference Result 298 states and 387 transitions. [2024-10-11 21:14:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 21:14:15,735 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 42 [2024-10-11 21:14:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:15,736 INFO L225 Difference]: With dead ends: 298 [2024-10-11 21:14:15,737 INFO L226 Difference]: Without dead ends: 188 [2024-10-11 21:14:15,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-10-11 21:14:15,738 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 113 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:15,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 667 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:14:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-10-11 21:14:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2024-10-11 21:14:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 130 states have (on average 1.146153846153846) internal successors, (149), 131 states have internal predecessors, (149), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 27 states have call predecessors, (48), 21 states have call successors, (48) [2024-10-11 21:14:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2024-10-11 21:14:15,754 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 42 [2024-10-11 21:14:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:15,755 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2024-10-11 21:14:15,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:14:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2024-10-11 21:14:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-11 21:14:15,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:15,756 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:15,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 21:14:15,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 21:14:15,961 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:15,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -145283649, now seen corresponding path program 1 times [2024-10-11 21:14:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30594452] [2024-10-11 21:14:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:16,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 21:14:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:16,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-11 21:14:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 21:14:16,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:16,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30594452] [2024-10-11 21:14:16,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30594452] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:16,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854058910] [2024-10-11 21:14:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:16,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:16,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:16,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:16,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:14:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:16,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 21:14:16,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:14:16,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 21:14:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854058910] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:16,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2024-10-11 21:14:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36688256] [2024-10-11 21:14:16,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:16,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 21:14:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 21:14:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-10-11 21:14:16,499 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:14:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:16,948 INFO L93 Difference]: Finished difference Result 355 states and 467 transitions. [2024-10-11 21:14:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 21:14:16,949 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 47 [2024-10-11 21:14:16,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:16,950 INFO L225 Difference]: With dead ends: 355 [2024-10-11 21:14:16,950 INFO L226 Difference]: Without dead ends: 208 [2024-10-11 21:14:16,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-10-11 21:14:16,953 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 155 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:16,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 654 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:14:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-10-11 21:14:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 189. [2024-10-11 21:14:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.1418918918918919) internal successors, (169), 148 states have internal predecessors, (169), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 31 states have call predecessors, (55), 24 states have call successors, (55) [2024-10-11 21:14:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2024-10-11 21:14:16,972 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 47 [2024-10-11 21:14:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:16,972 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2024-10-11 21:14:16,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:14:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2024-10-11 21:14:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-11 21:14:16,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:16,974 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:16,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:17,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 21:14:17,175 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:17,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash -350528371, now seen corresponding path program 2 times [2024-10-11 21:14:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465321935] [2024-10-11 21:14:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:17,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 21:14:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:17,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 21:14:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 21:14:17,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:17,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465321935] [2024-10-11 21:14:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465321935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:17,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505254591] [2024-10-11 21:14:17,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:14:17,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:17,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:17,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:17,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:14:17,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:14:17,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:17,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 21:14:17,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 21:14:17,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:14:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505254591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:17,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:14:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 21:14:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380085268] [2024-10-11 21:14:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:17,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:17,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:14:17,331 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-10-11 21:14:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:17,360 INFO L93 Difference]: Finished difference Result 202 states and 269 transitions. [2024-10-11 21:14:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:17,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 47 [2024-10-11 21:14:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:17,362 INFO L225 Difference]: With dead ends: 202 [2024-10-11 21:14:17,363 INFO L226 Difference]: Without dead ends: 201 [2024-10-11 21:14:17,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:14:17,364 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:17,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 101 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-11 21:14:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2024-10-11 21:14:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 156 states have (on average 1.1346153846153846) internal successors, (177), 152 states have internal predecessors, (177), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 35 states have call predecessors, (55), 24 states have call successors, (55) [2024-10-11 21:14:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 257 transitions. [2024-10-11 21:14:17,377 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 257 transitions. Word has length 47 [2024-10-11 21:14:17,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:17,377 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 257 transitions. [2024-10-11 21:14:17,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-10-11 21:14:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 257 transitions. [2024-10-11 21:14:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-11 21:14:17,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:17,378 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:17,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:17,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 21:14:17,579 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:17,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2018522486, now seen corresponding path program 1 times [2024-10-11 21:14:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056805256] [2024-10-11 21:14:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:17,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 21:14:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:17,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 21:14:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 21:14:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:17,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056805256] [2024-10-11 21:14:17,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056805256] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:17,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157915470] [2024-10-11 21:14:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:17,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:17,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:17,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:17,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 21:14:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:17,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 21:14:17,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 21:14:17,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:14:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157915470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:17,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:14:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-10-11 21:14:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256584749] [2024-10-11 21:14:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:17,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:14:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:14:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:14:17,749 INFO L87 Difference]: Start difference. First operand 197 states and 257 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2024-10-11 21:14:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:17,787 INFO L93 Difference]: Finished difference Result 213 states and 278 transitions. [2024-10-11 21:14:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:14:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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 48 [2024-10-11 21:14:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:17,789 INFO L225 Difference]: With dead ends: 213 [2024-10-11 21:14:17,790 INFO L226 Difference]: Without dead ends: 212 [2024-10-11 21:14:17,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:14:17,791 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:17,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 143 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-11 21:14:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2024-10-11 21:14:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 149 states have internal predecessors, (174), 24 states have call successors, (24), 9 states have call predecessors, (24), 12 states have return successors, (52), 34 states have call predecessors, (52), 23 states have call successors, (52) [2024-10-11 21:14:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 250 transitions. [2024-10-11 21:14:17,804 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 250 transitions. Word has length 48 [2024-10-11 21:14:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:17,804 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 250 transitions. [2024-10-11 21:14:17,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2024-10-11 21:14:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 250 transitions. [2024-10-11 21:14:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 21:14:17,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:17,806 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:17,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 21:14:18,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:18,010 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:18,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1384488167, now seen corresponding path program 1 times [2024-10-11 21:14:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:18,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107406747] [2024-10-11 21:14:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:18,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 21:14:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:14:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-11 21:14:18,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107406747] [2024-10-11 21:14:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107406747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:18,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:18,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606679160] [2024-10-11 21:14:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:18,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:18,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:18,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:18,107 INFO L87 Difference]: Start difference. First operand 193 states and 250 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) [2024-10-11 21:14:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:18,164 INFO L93 Difference]: Finished difference Result 209 states and 271 transitions. [2024-10-11 21:14:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:18,165 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 55 [2024-10-11 21:14:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:18,166 INFO L225 Difference]: With dead ends: 209 [2024-10-11 21:14:18,166 INFO L226 Difference]: Without dead ends: 208 [2024-10-11 21:14:18,166 INFO L431 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 [2024-10-11 21:14:18,167 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 2 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:18,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 161 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-10-11 21:14:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 189. [2024-10-11 21:14:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 150 states have (on average 1.14) internal successors, (171), 146 states have internal predecessors, (171), 23 states have call successors, (23), 9 states have call predecessors, (23), 12 states have return successors, (49), 33 states have call predecessors, (49), 22 states have call successors, (49) [2024-10-11 21:14:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 243 transitions. [2024-10-11 21:14:18,181 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 243 transitions. Word has length 55 [2024-10-11 21:14:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:18,183 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 243 transitions. [2024-10-11 21:14:18,183 INFO L472 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) [2024-10-11 21:14:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 243 transitions. [2024-10-11 21:14:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-11 21:14:18,184 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:18,184 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:18,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 21:14:18,185 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:18,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash 525191420, now seen corresponding path program 1 times [2024-10-11 21:14:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:18,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081996986] [2024-10-11 21:14:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 21:14:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 21:14:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-11 21:14:18,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:18,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081996986] [2024-10-11 21:14:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081996986] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:18,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749215901] [2024-10-11 21:14:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:18,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:18,261 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:18,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 21:14:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:18,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 21:14:18,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:14:18,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:14:18,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749215901] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:18,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:18,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 19 [2024-10-11 21:14:18,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558796003] [2024-10-11 21:14:18,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:18,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 21:14:18,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 21:14:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:14:18,690 INFO L87 Difference]: Start difference. First operand 189 states and 243 transitions. Second operand has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 21:14:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:19,188 INFO L93 Difference]: Finished difference Result 450 states and 614 transitions. [2024-10-11 21:14:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 21:14:19,188 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2024-10-11 21:14:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:19,190 INFO L225 Difference]: With dead ends: 450 [2024-10-11 21:14:19,192 INFO L226 Difference]: Without dead ends: 281 [2024-10-11 21:14:19,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 120 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2024-10-11 21:14:19,195 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 171 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:19,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 282 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:14:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-10-11 21:14:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 256. [2024-10-11 21:14:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 204 states have (on average 1.1323529411764706) internal successors, (231), 198 states have internal predecessors, (231), 32 states have call successors, (32), 12 states have call predecessors, (32), 16 states have return successors, (64), 45 states have call predecessors, (64), 31 states have call successors, (64) [2024-10-11 21:14:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 327 transitions. [2024-10-11 21:14:19,229 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 327 transitions. Word has length 67 [2024-10-11 21:14:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:19,229 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 327 transitions. [2024-10-11 21:14:19,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 21:14:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 327 transitions. [2024-10-11 21:14:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 21:14:19,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:19,231 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:19,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 21:14:19,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 21:14:19,436 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:19,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash -93027204, now seen corresponding path program 1 times [2024-10-11 21:14:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633485550] [2024-10-11 21:14:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-11 21:14:19,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633485550] [2024-10-11 21:14:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633485550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:19,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:19,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137437975] [2024-10-11 21:14:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:19,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:19,523 INFO L87 Difference]: Start difference. First operand 256 states and 327 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:14:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:19,562 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2024-10-11 21:14:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:19,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2024-10-11 21:14:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:19,564 INFO L225 Difference]: With dead ends: 278 [2024-10-11 21:14:19,565 INFO L226 Difference]: Without dead ends: 277 [2024-10-11 21:14:19,565 INFO L431 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 [2024-10-11 21:14:19,566 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 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 [2024-10-11 21:14:19,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-10-11 21:14:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 264. [2024-10-11 21:14:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 211 states have (on average 1.127962085308057) internal successors, (238), 204 states have internal predecessors, (238), 32 states have call successors, (32), 12 states have call predecessors, (32), 17 states have return successors, (65), 47 states have call predecessors, (65), 31 states have call successors, (65) [2024-10-11 21:14:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 335 transitions. [2024-10-11 21:14:19,589 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 335 transitions. Word has length 61 [2024-10-11 21:14:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:19,591 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 335 transitions. [2024-10-11 21:14:19,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:14:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 335 transitions. [2024-10-11 21:14:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 21:14:19,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:19,593 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:19,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 21:14:19,594 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:19,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1778862165, now seen corresponding path program 1 times [2024-10-11 21:14:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:19,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144273321] [2024-10-11 21:14:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 21:14:19,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:19,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144273321] [2024-10-11 21:14:19,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144273321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:19,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:19,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 21:14:19,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445660477] [2024-10-11 21:14:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:19,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 21:14:19,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 21:14:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:14:19,744 INFO L87 Difference]: Start difference. First operand 264 states and 335 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) [2024-10-11 21:14:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:19,838 INFO L93 Difference]: Finished difference Result 345 states and 452 transitions. [2024-10-11 21:14:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 21:14:19,839 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 62 [2024-10-11 21:14:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:19,841 INFO L225 Difference]: With dead ends: 345 [2024-10-11 21:14:19,841 INFO L226 Difference]: Without dead ends: 344 [2024-10-11 21:14:19,842 INFO L431 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 [2024-10-11 21:14:19,842 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:19,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 212 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-11 21:14:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 281. [2024-10-11 21:14:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 218 states have internal predecessors, (250), 34 states have call successors, (34), 12 states have call predecessors, (34), 20 states have return successors, (81), 50 states have call predecessors, (81), 33 states have call successors, (81) [2024-10-11 21:14:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 365 transitions. [2024-10-11 21:14:19,860 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 365 transitions. Word has length 62 [2024-10-11 21:14:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:19,861 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 365 transitions. [2024-10-11 21:14:19,861 INFO L472 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) [2024-10-11 21:14:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 365 transitions. [2024-10-11 21:14:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 21:14:19,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:19,862 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:19,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 21:14:19,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:19,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1017747310, now seen corresponding path program 1 times [2024-10-11 21:14:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238409346] [2024-10-11 21:14:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 21:14:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:14:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-11 21:14:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-11 21:14:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238409346] [2024-10-11 21:14:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238409346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:19,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735884144] [2024-10-11 21:14:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:19,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:19,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:19,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:19,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 21:14:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:19,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 21:14:19,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 87 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:14:20,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 39 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:14:20,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735884144] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:20,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:20,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 18 [2024-10-11 21:14:20,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197905349] [2024-10-11 21:14:20,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:20,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 21:14:20,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 21:14:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-11 21:14:20,341 INFO L87 Difference]: Start difference. First operand 281 states and 365 transitions. Second operand has 18 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 12 states have internal predecessors, (84), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-11 21:14:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:20,772 INFO L93 Difference]: Finished difference Result 360 states and 459 transitions. [2024-10-11 21:14:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 21:14:20,773 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 12 states have internal predecessors, (84), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 80 [2024-10-11 21:14:20,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:20,775 INFO L225 Difference]: With dead ends: 360 [2024-10-11 21:14:20,775 INFO L226 Difference]: Without dead ends: 301 [2024-10-11 21:14:20,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 148 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:14:20,777 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 152 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:20,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 315 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:14:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-10-11 21:14:20,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 289. [2024-10-11 21:14:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 229 states have (on average 1.1179039301310043) internal successors, (256), 224 states have internal predecessors, (256), 35 states have call successors, (35), 13 states have call predecessors, (35), 21 states have return successors, (85), 51 states have call predecessors, (85), 34 states have call successors, (85) [2024-10-11 21:14:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 376 transitions. [2024-10-11 21:14:20,795 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 376 transitions. Word has length 80 [2024-10-11 21:14:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:20,795 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 376 transitions. [2024-10-11 21:14:20,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 12 states have internal predecessors, (84), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-11 21:14:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 376 transitions. [2024-10-11 21:14:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-11 21:14:20,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:20,797 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:20,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:21,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:21,002 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:21,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash -293281765, now seen corresponding path program 1 times [2024-10-11 21:14:21,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:21,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865898947] [2024-10-11 21:14:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:21,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:21,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 21:14:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:21,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-11 21:14:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:21,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:21,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-11 21:14:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865898947] [2024-10-11 21:14:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865898947] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752053268] [2024-10-11 21:14:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:21,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:21,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:21,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:21,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 21:14:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:21,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 21:14:21,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:14:21,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:14:21,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752053268] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:21,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:21,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 34 [2024-10-11 21:14:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46867323] [2024-10-11 21:14:21,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:21,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 21:14:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 21:14:21,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 21:14:21,589 INFO L87 Difference]: Start difference. First operand 289 states and 376 transitions. Second operand has 34 states, 32 states have (on average 3.5625) internal successors, (114), 22 states have internal predecessors, (114), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-11 21:14:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:22,336 INFO L93 Difference]: Finished difference Result 555 states and 743 transitions. [2024-10-11 21:14:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 21:14:22,337 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 22 states have internal predecessors, (114), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 72 [2024-10-11 21:14:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:22,339 INFO L225 Difference]: With dead ends: 555 [2024-10-11 21:14:22,339 INFO L226 Difference]: Without dead ends: 309 [2024-10-11 21:14:22,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=2340, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 21:14:22,342 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 351 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:22,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 455 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:14:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-10-11 21:14:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 282. [2024-10-11 21:14:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 222 states have (on average 1.1081081081081081) internal successors, (246), 221 states have internal predecessors, (246), 34 states have call successors, (34), 14 states have call predecessors, (34), 22 states have return successors, (65), 46 states have call predecessors, (65), 33 states have call successors, (65) [2024-10-11 21:14:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 345 transitions. [2024-10-11 21:14:22,359 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 345 transitions. Word has length 72 [2024-10-11 21:14:22,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:22,360 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 345 transitions. [2024-10-11 21:14:22,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 22 states have internal predecessors, (114), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-11 21:14:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 345 transitions. [2024-10-11 21:14:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 21:14:22,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:22,361 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:22,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 21:14:22,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:22,566 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:22,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2066237387, now seen corresponding path program 1 times [2024-10-11 21:14:22,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:22,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037997401] [2024-10-11 21:14:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:22,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 21:14:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:14:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 21:14:22,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037997401] [2024-10-11 21:14:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037997401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:14:22,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:14:22,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:14:22,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583229548] [2024-10-11 21:14:22,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:14:22,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:14:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:22,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:14:22,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:14:22,628 INFO L87 Difference]: Start difference. First operand 282 states and 345 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-10-11 21:14:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:22,659 INFO L93 Difference]: Finished difference Result 296 states and 361 transitions. [2024-10-11 21:14:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:14:22,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 66 [2024-10-11 21:14:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:22,662 INFO L225 Difference]: With dead ends: 296 [2024-10-11 21:14:22,662 INFO L226 Difference]: Without dead ends: 295 [2024-10-11 21:14:22,663 INFO L431 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 [2024-10-11 21:14:22,664 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 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 [2024-10-11 21:14:22,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:14:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-10-11 21:14:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2024-10-11 21:14:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 219 states have (on average 1.1004566210045663) internal successors, (241), 218 states have internal predecessors, (241), 33 states have call successors, (33), 14 states have call predecessors, (33), 22 states have return successors, (64), 45 states have call predecessors, (64), 32 states have call successors, (64) [2024-10-11 21:14:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 338 transitions. [2024-10-11 21:14:22,679 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 338 transitions. Word has length 66 [2024-10-11 21:14:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:22,679 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 338 transitions. [2024-10-11 21:14:22,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-10-11 21:14:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 338 transitions. [2024-10-11 21:14:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-11 21:14:22,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:22,680 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:22,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 21:14:22,681 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:22,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1593347563, now seen corresponding path program 1 times [2024-10-11 21:14:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:22,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627346116] [2024-10-11 21:14:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-11 21:14:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:14:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627346116] [2024-10-11 21:14:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627346116] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552766989] [2024-10-11 21:14:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:22,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:22,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:22,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:22,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 21:14:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:22,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 21:14:22,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 21:14:23,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 21:14:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552766989] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:23,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2024-10-11 21:14:23,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402427477] [2024-10-11 21:14:23,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:23,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 21:14:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 21:14:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-11 21:14:23,359 INFO L87 Difference]: Start difference. First operand 278 states and 338 transitions. Second operand has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 16 states have internal predecessors, (92), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2024-10-11 21:14:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:23,675 INFO L93 Difference]: Finished difference Result 500 states and 606 transitions. [2024-10-11 21:14:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 21:14:23,676 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 16 states have internal predecessors, (92), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 98 [2024-10-11 21:14:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:23,678 INFO L225 Difference]: With dead ends: 500 [2024-10-11 21:14:23,679 INFO L226 Difference]: Without dead ends: 285 [2024-10-11 21:14:23,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 198 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2024-10-11 21:14:23,681 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 176 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:23,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 204 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:14:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-10-11 21:14:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 280. [2024-10-11 21:14:23,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 220 states have (on average 1.1) internal successors, (242), 220 states have internal predecessors, (242), 33 states have call successors, (33), 15 states have call predecessors, (33), 23 states have return successors, (62), 44 states have call predecessors, (62), 32 states have call successors, (62) [2024-10-11 21:14:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 337 transitions. [2024-10-11 21:14:23,698 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 337 transitions. Word has length 98 [2024-10-11 21:14:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:23,698 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 337 transitions. [2024-10-11 21:14:23,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 16 states have internal predecessors, (92), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2024-10-11 21:14:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 337 transitions. [2024-10-11 21:14:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 21:14:23,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:23,700 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:23,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 21:14:23,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 21:14:23,901 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:23,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash -446635783, now seen corresponding path program 1 times [2024-10-11 21:14:23,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:23,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903113538] [2024-10-11 21:14:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:23,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:23,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:14:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 21:14:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-11 21:14:24,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903113538] [2024-10-11 21:14:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903113538] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89701378] [2024-10-11 21:14:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:24,130 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:24,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 21:14:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:24,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 21:14:24,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 21:14:24,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 21:14:24,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89701378] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:24,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:24,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2024-10-11 21:14:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589896864] [2024-10-11 21:14:24,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:24,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 21:14:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:24,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 21:14:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-10-11 21:14:24,490 INFO L87 Difference]: Start difference. First operand 280 states and 337 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-10-11 21:14:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:24,772 INFO L93 Difference]: Finished difference Result 517 states and 625 transitions. [2024-10-11 21:14:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 21:14:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 75 [2024-10-11 21:14:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:24,775 INFO L225 Difference]: With dead ends: 517 [2024-10-11 21:14:24,775 INFO L226 Difference]: Without dead ends: 276 [2024-10-11 21:14:24,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 152 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2024-10-11 21:14:24,777 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 128 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:24,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 430 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:14:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-10-11 21:14:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 266. [2024-10-11 21:14:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 210 states have (on average 1.0952380952380953) internal successors, (230), 208 states have internal predecessors, (230), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (52), 42 states have call predecessors, (52), 30 states have call successors, (52) [2024-10-11 21:14:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 313 transitions. [2024-10-11 21:14:24,793 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 313 transitions. Word has length 75 [2024-10-11 21:14:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:24,793 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 313 transitions. [2024-10-11 21:14:24,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-10-11 21:14:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 313 transitions. [2024-10-11 21:14:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 21:14:24,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:24,794 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:24,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:24,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:24,995 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:24,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:24,995 INFO L85 PathProgramCache]: Analyzing trace with hash -94407406, now seen corresponding path program 1 times [2024-10-11 21:14:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:24,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615712495] [2024-10-11 21:14:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:24,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:14:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 21:14:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:14:25,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:25,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615712495] [2024-10-11 21:14:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615712495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:25,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823787026] [2024-10-11 21:14:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:25,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:25,117 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:25,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 21:14:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 21:14:25,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:14:25,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:14:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823787026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:25,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:25,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-10-11 21:14:25,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454162019] [2024-10-11 21:14:25,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:25,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 21:14:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:25,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 21:14:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:14:25,379 INFO L87 Difference]: Start difference. First operand 266 states and 313 transitions. Second operand has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:14:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:25,511 INFO L93 Difference]: Finished difference Result 460 states and 539 transitions. [2024-10-11 21:14:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 21:14:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-10-11 21:14:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:25,513 INFO L225 Difference]: With dead ends: 460 [2024-10-11 21:14:25,513 INFO L226 Difference]: Without dead ends: 270 [2024-10-11 21:14:25,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-11 21:14:25,515 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 112 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:25,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 254 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-11 21:14:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 264. [2024-10-11 21:14:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 208 states have (on average 1.0961538461538463) internal successors, (228), 207 states have internal predecessors, (228), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (51), 41 states have call predecessors, (51), 30 states have call successors, (51) [2024-10-11 21:14:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 310 transitions. [2024-10-11 21:14:25,528 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 310 transitions. Word has length 76 [2024-10-11 21:14:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:25,529 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 310 transitions. [2024-10-11 21:14:25,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:14:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 310 transitions. [2024-10-11 21:14:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 21:14:25,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:25,530 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:25,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 21:14:25,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:25,731 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:25,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:25,733 INFO L85 PathProgramCache]: Analyzing trace with hash -701357590, now seen corresponding path program 1 times [2024-10-11 21:14:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:25,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270066837] [2024-10-11 21:14:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:25,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 21:14:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-11 21:14:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-11 21:14:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 21:14:25,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270066837] [2024-10-11 21:14:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270066837] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472742368] [2024-10-11 21:14:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:25,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:25,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:25,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:25,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 21:14:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:25,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 21:14:25,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-11 21:14:26,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 21:14:26,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472742368] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:26,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:26,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2024-10-11 21:14:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203836380] [2024-10-11 21:14:26,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:26,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-11 21:14:26,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-11 21:14:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2024-10-11 21:14:26,497 INFO L87 Difference]: Start difference. First operand 264 states and 310 transitions. Second operand has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:14:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:27,305 INFO L93 Difference]: Finished difference Result 479 states and 574 transitions. [2024-10-11 21:14:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 21:14:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 80 [2024-10-11 21:14:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:27,308 INFO L225 Difference]: With dead ends: 479 [2024-10-11 21:14:27,308 INFO L226 Difference]: Without dead ends: 260 [2024-10-11 21:14:27,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 164 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=2811, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 21:14:27,310 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 200 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:27,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 325 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:14:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-10-11 21:14:27,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 230. [2024-10-11 21:14:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 180 states have (on average 1.0833333333333333) internal successors, (195), 182 states have internal predecessors, (195), 26 states have call successors, (26), 15 states have call predecessors, (26), 20 states have return successors, (37), 32 states have call predecessors, (37), 25 states have call successors, (37) [2024-10-11 21:14:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 258 transitions. [2024-10-11 21:14:27,324 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 258 transitions. Word has length 80 [2024-10-11 21:14:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:27,325 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 258 transitions. [2024-10-11 21:14:27,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:14:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 258 transitions. [2024-10-11 21:14:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-11 21:14:27,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:27,326 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-11 21:14:27,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 21:14:27,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-11 21:14:27,531 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:27,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1172080739, now seen corresponding path program 1 times [2024-10-11 21:14:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:27,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380273998] [2024-10-11 21:14:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:14:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 21:14:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-11 21:14:27,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380273998] [2024-10-11 21:14:27,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380273998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360210056] [2024-10-11 21:14:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:27,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:27,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:27,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:27,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 21:14:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:27,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 21:14:27,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-10-11 21:14:28,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-11 21:14:28,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360210056] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:28,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:28,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2024-10-11 21:14:28,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732035625] [2024-10-11 21:14:28,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:28,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 21:14:28,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:28,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 21:14:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-10-11 21:14:28,445 INFO L87 Difference]: Start difference. First operand 230 states and 258 transitions. Second operand has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 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) [2024-10-11 21:14:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:28,608 INFO L93 Difference]: Finished difference Result 244 states and 276 transitions. [2024-10-11 21:14:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 21:14:28,609 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 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 94 [2024-10-11 21:14:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:28,610 INFO L225 Difference]: With dead ends: 244 [2024-10-11 21:14:28,610 INFO L226 Difference]: Without dead ends: 242 [2024-10-11 21:14:28,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 21:14:28,611 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:28,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 467 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-10-11 21:14:28,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 222. [2024-10-11 21:14:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 175 states have (on average 1.0571428571428572) internal successors, (185), 176 states have internal predecessors, (185), 26 states have call successors, (26), 15 states have call predecessors, (26), 19 states have return successors, (35), 30 states have call predecessors, (35), 25 states have call successors, (35) [2024-10-11 21:14:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 246 transitions. [2024-10-11 21:14:28,627 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 246 transitions. Word has length 94 [2024-10-11 21:14:28,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:28,630 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 246 transitions. [2024-10-11 21:14:28,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 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) [2024-10-11 21:14:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 246 transitions. [2024-10-11 21:14:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-11 21:14:28,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:28,633 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:14:28,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:28,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 21:14:28,834 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:28,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1974764640, now seen corresponding path program 1 times [2024-10-11 21:14:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:28,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874410399] [2024-10-11 21:14:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:28,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:28,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 21:14:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:28,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 21:14:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-11 21:14:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874410399] [2024-10-11 21:14:29,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874410399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774677511] [2024-10-11 21:14:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:29,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:29,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:29,108 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:29,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 21:14:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:29,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 21:14:29,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-11 21:14:29,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-11 21:14:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774677511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:29,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2024-10-11 21:14:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150068861] [2024-10-11 21:14:29,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:29,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 21:14:29,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 21:14:29,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:14:29,770 INFO L87 Difference]: Start difference. First operand 222 states and 246 transitions. Second operand has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 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) [2024-10-11 21:14:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:29,949 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2024-10-11 21:14:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 21:14:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 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 95 [2024-10-11 21:14:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:29,951 INFO L225 Difference]: With dead ends: 256 [2024-10-11 21:14:29,952 INFO L226 Difference]: Without dead ends: 254 [2024-10-11 21:14:29,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 189 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-10-11 21:14:29,952 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:29,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 417 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-10-11 21:14:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 216. [2024-10-11 21:14:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 170 states have (on average 1.0411764705882354) internal successors, (177), 172 states have internal predecessors, (177), 24 states have call successors, (24), 15 states have call predecessors, (24), 20 states have return successors, (32), 28 states have call predecessors, (32), 23 states have call successors, (32) [2024-10-11 21:14:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 233 transitions. [2024-10-11 21:14:29,966 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 233 transitions. Word has length 95 [2024-10-11 21:14:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:29,967 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 233 transitions. [2024-10-11 21:14:29,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 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) [2024-10-11 21:14:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 233 transitions. [2024-10-11 21:14:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-11 21:14:29,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:29,969 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-10-11 21:14:29,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 21:14:30,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 21:14:30,174 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:30,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:30,174 INFO L85 PathProgramCache]: Analyzing trace with hash -341892502, now seen corresponding path program 1 times [2024-10-11 21:14:30,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:30,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812390925] [2024-10-11 21:14:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:30,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-11 21:14:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-11 21:14:30,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812390925] [2024-10-11 21:14:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812390925] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574098159] [2024-10-11 21:14:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:30,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:30,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:30,761 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:30,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 21:14:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:30,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 21:14:30,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-11 21:14:31,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-11 21:14:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574098159] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:32,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:32,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2024-10-11 21:14:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829286109] [2024-10-11 21:14:32,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:32,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-11 21:14:32,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-11 21:14:32,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 21:14:32,134 INFO L87 Difference]: Start difference. First operand 216 states and 233 transitions. Second operand has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 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) [2024-10-11 21:14:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:32,270 INFO L93 Difference]: Finished difference Result 228 states and 244 transitions. [2024-10-11 21:14:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 21:14:32,270 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 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 148 [2024-10-11 21:14:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:32,272 INFO L225 Difference]: With dead ends: 228 [2024-10-11 21:14:32,272 INFO L226 Difference]: Without dead ends: 218 [2024-10-11 21:14:32,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 300 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=1282, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 21:14:32,273 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:32,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 386 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-11 21:14:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 204. [2024-10-11 21:14:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 160 states have (on average 1.03125) internal successors, (165), 163 states have internal predecessors, (165), 24 states have call successors, (24), 15 states have call predecessors, (24), 19 states have return successors, (30), 25 states have call predecessors, (30), 23 states have call successors, (30) [2024-10-11 21:14:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 219 transitions. [2024-10-11 21:14:32,286 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 219 transitions. Word has length 148 [2024-10-11 21:14:32,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:32,286 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 219 transitions. [2024-10-11 21:14:32,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 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) [2024-10-11 21:14:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 219 transitions. [2024-10-11 21:14:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-11 21:14:32,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:32,288 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1] [2024-10-11 21:14:32,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:32,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 21:14:32,493 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:32,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2064765440, now seen corresponding path program 2 times [2024-10-11 21:14:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:32,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403517750] [2024-10-11 21:14:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-11 21:14:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-11 21:14:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 21:14:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 178 proven. 56 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-10-11 21:14:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403517750] [2024-10-11 21:14:32,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403517750] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908548116] [2024-10-11 21:14:32,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 21:14:32,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:32,740 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:32,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 21:14:32,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 21:14:32,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:32,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 21:14:32,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 360 proven. 58 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-10-11 21:14:32,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 109 proven. 121 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2024-10-11 21:14:33,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908548116] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:33,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 19 [2024-10-11 21:14:33,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004010761] [2024-10-11 21:14:33,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:33,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 21:14:33,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 21:14:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:14:33,387 INFO L87 Difference]: Start difference. First operand 204 states and 219 transitions. Second operand has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2024-10-11 21:14:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:33,589 INFO L93 Difference]: Finished difference Result 331 states and 365 transitions. [2024-10-11 21:14:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:14:33,590 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) Word has length 201 [2024-10-11 21:14:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:33,591 INFO L225 Difference]: With dead ends: 331 [2024-10-11 21:14:33,591 INFO L226 Difference]: Without dead ends: 195 [2024-10-11 21:14:33,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 427 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-10-11 21:14:33,593 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 76 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:33,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 176 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:14:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-10-11 21:14:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 190. [2024-10-11 21:14:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 151 states have internal predecessors, (154), 23 states have call successors, (23), 16 states have call predecessors, (23), 16 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-10-11 21:14:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 200 transitions. [2024-10-11 21:14:33,605 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 200 transitions. Word has length 201 [2024-10-11 21:14:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:33,605 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 200 transitions. [2024-10-11 21:14:33,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2024-10-11 21:14:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 200 transitions. [2024-10-11 21:14:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-11 21:14:33,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:33,607 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1] [2024-10-11 21:14:33,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:33,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 21:14:33,808 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:33,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash 204398661, now seen corresponding path program 3 times [2024-10-11 21:14:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:33,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093054644] [2024-10-11 21:14:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:33,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:33,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-11 21:14:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-11 21:14:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 246 proven. 62 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2024-10-11 21:14:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:34,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093054644] [2024-10-11 21:14:34,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093054644] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:34,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796553209] [2024-10-11 21:14:34,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 21:14:34,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:34,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:34,239 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:34,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 21:14:34,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 21:14:34,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:34,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:14:34,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 210 proven. 7 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-10-11 21:14:34,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 210 proven. 7 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-10-11 21:14:34,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796553209] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:34,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:34,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 21 [2024-10-11 21:14:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319201740] [2024-10-11 21:14:34,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:34,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 21:14:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 21:14:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:14:34,777 INFO L87 Difference]: Start difference. First operand 190 states and 200 transitions. Second operand has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2024-10-11 21:14:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:34,931 INFO L93 Difference]: Finished difference Result 205 states and 213 transitions. [2024-10-11 21:14:34,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:14:34,932 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) Word has length 221 [2024-10-11 21:14:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:34,933 INFO L225 Difference]: With dead ends: 205 [2024-10-11 21:14:34,933 INFO L226 Difference]: Without dead ends: 192 [2024-10-11 21:14:34,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 474 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-10-11 21:14:34,934 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 40 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:34,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 279 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-11 21:14:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2024-10-11 21:14:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 151 states have internal predecessors, (152), 23 states have call successors, (23), 16 states have call predecessors, (23), 16 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-10-11 21:14:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 198 transitions. [2024-10-11 21:14:34,943 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 198 transitions. Word has length 221 [2024-10-11 21:14:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:34,944 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 198 transitions. [2024-10-11 21:14:34,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2024-10-11 21:14:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 198 transitions. [2024-10-11 21:14:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-11 21:14:34,945 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:34,945 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 1, 1, 1] [2024-10-11 21:14:34,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:35,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:35,150 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:35,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:35,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1937441536, now seen corresponding path program 4 times [2024-10-11 21:14:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:35,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77480935] [2024-10-11 21:14:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-11 21:14:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-11 21:14:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 21:14:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 155 proven. 3 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2024-10-11 21:14:35,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77480935] [2024-10-11 21:14:35,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77480935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064518604] [2024-10-11 21:14:35,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 21:14:35,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:35,369 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:35,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 21:14:35,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 21:14:35,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:35,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 21:14:35,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 201 proven. 318 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2024-10-11 21:14:35,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 201 proven. 331 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-10-11 21:14:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064518604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:36,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 19] total 26 [2024-10-11 21:14:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325502629] [2024-10-11 21:14:36,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:36,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 21:14:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 21:14:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2024-10-11 21:14:36,804 INFO L87 Difference]: Start difference. First operand 190 states and 198 transitions. Second operand has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2024-10-11 21:14:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:37,196 INFO L93 Difference]: Finished difference Result 215 states and 223 transitions. [2024-10-11 21:14:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 21:14:37,197 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) Word has length 239 [2024-10-11 21:14:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:37,198 INFO L225 Difference]: With dead ends: 215 [2024-10-11 21:14:37,198 INFO L226 Difference]: Without dead ends: 190 [2024-10-11 21:14:37,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 500 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 21:14:37,199 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 93 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:37,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 454 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:14:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-10-11 21:14:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-10-11 21:14:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.0067114093959733) internal successors, (150), 149 states have internal predecessors, (150), 23 states have call successors, (23), 16 states have call predecessors, (23), 15 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-11 21:14:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 195 transitions. [2024-10-11 21:14:37,211 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 195 transitions. Word has length 239 [2024-10-11 21:14:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:37,211 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 195 transitions. [2024-10-11 21:14:37,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2024-10-11 21:14:37,212 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 195 transitions. [2024-10-11 21:14:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-11 21:14:37,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:14:37,214 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1] [2024-10-11 21:14:37,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-11 21:14:37,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:37,415 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-11 21:14:37,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:14:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2061307917, now seen corresponding path program 5 times [2024-10-11 21:14:37,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:14:37,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14474845] [2024-10-11 21:14:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:14:37,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:14:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:37,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:14:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-11 21:14:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-11 21:14:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 21:14:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 21:14:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 21:14:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 21:14:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:14:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-10-11 21:14:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:14:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14474845] [2024-10-11 21:14:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14474845] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:14:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162022759] [2024-10-11 21:14:38,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 21:14:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:14:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:14:38,578 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:14:38,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 21:14:38,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-11 21:14:38,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 21:14:38,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-11 21:14:38,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:14:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-10-11 21:14:39,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:14:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-10-11 21:14:41,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162022759] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:14:41,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:14:41,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2024-10-11 21:14:41,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685034220] [2024-10-11 21:14:41,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:14:41,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-11 21:14:41,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:14:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-11 21:14:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 21:14:41,660 INFO L87 Difference]: Start difference. First operand 188 states and 195 transitions. Second operand has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 48 states have internal predecessors, (126), 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) [2024-10-11 21:14:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:14:41,786 INFO L93 Difference]: Finished difference Result 188 states and 195 transitions. [2024-10-11 21:14:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 21:14:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 48 states have internal predecessors, (126), 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 240 [2024-10-11 21:14:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:14:41,787 INFO L225 Difference]: With dead ends: 188 [2024-10-11 21:14:41,787 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 21:14:41,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 496 SyntacticMatches, 33 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 21:14:41,789 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:14:41,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 474 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:14:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 21:14:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 21:14:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:14:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 21:14:41,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 240 [2024-10-11 21:14:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:14:41,790 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 21:14:41,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6808510638297873) internal successors, (126), 48 states have internal predecessors, (126), 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) [2024-10-11 21:14:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 21:14:41,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 21:14:41,793 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-10-11 21:14:41,794 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-10-11 21:14:41,794 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-10-11 21:14:41,794 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-10-11 21:14:41,794 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-10-11 21:14:41,794 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-10-11 21:14:41,795 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-10-11 21:14:41,795 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-10-11 21:14:41,795 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-10-11 21:14:41,795 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-10-11 21:14:41,795 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-10-11 21:14:41,795 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-10-11 21:14:41,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-11 21:14:41,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-11 21:14:41,999 INFO L407 BasicCegarLoop]: Path program histogram: [5, 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] [2024-10-11 21:14:42,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 21:14:43,820 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 21:14:43,856 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-11 21:14:43,876 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-11 21:14:43,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 09:14:43 BoogieIcfgContainer [2024-10-11 21:14:43,877 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 21:14:43,878 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 21:14:43,878 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 21:14:43,878 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 21:14:43,878 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:14:10" (3/4) ... [2024-10-11 21:14:43,880 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 21:14:43,884 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-10-11 21:14:43,884 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-10-11 21:14:43,888 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-10-11 21:14:43,888 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 21:14:43,888 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 21:14:43,889 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 21:14:43,975 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 21:14:43,976 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 21:14:43,976 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 21:14:43,976 INFO L158 Benchmark]: Toolchain (without parser) took 33922.62ms. Allocated memory was 161.5MB in the beginning and 352.3MB in the end (delta: 190.8MB). Free memory was 131.3MB in the beginning and 189.1MB in the end (delta: -57.8MB). Peak memory consumption was 133.0MB. Max. memory is 16.1GB. [2024-10-11 21:14:43,977 INFO L158 Benchmark]: CDTParser took 0.99ms. Allocated memory is still 161.5MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 21:14:43,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.02ms. Allocated memory is still 161.5MB. Free memory was 130.5MB in the beginning and 119.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 21:14:43,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.76ms. Allocated memory is still 161.5MB. Free memory was 119.3MB in the beginning and 117.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 21:14:43,977 INFO L158 Benchmark]: Boogie Preprocessor took 26.42ms. Allocated memory is still 161.5MB. Free memory was 117.9MB in the beginning and 115.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 21:14:43,978 INFO L158 Benchmark]: RCFGBuilder took 414.18ms. Allocated memory is still 161.5MB. Free memory was 115.8MB in the beginning and 131.8MB in the end (delta: -15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 21:14:43,978 INFO L158 Benchmark]: TraceAbstraction took 33120.66ms. Allocated memory was 161.5MB in the beginning and 352.3MB in the end (delta: 190.8MB). Free memory was 131.6MB in the beginning and 193.3MB in the end (delta: -61.7MB). Peak memory consumption was 211.4MB. Max. memory is 16.1GB. [2024-10-11 21:14:43,978 INFO L158 Benchmark]: Witness Printer took 98.38ms. Allocated memory is still 352.3MB. Free memory was 193.3MB in the beginning and 189.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 21:14:43,979 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99ms. Allocated memory is still 161.5MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.02ms. Allocated memory is still 161.5MB. Free memory was 130.5MB in the beginning and 119.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.76ms. Allocated memory is still 161.5MB. Free memory was 119.3MB in the beginning and 117.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.42ms. Allocated memory is still 161.5MB. Free memory was 117.9MB in the beginning and 115.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.18ms. Allocated memory is still 161.5MB. Free memory was 115.8MB in the beginning and 131.8MB in the end (delta: -15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 33120.66ms. Allocated memory was 161.5MB in the beginning and 352.3MB in the end (delta: 190.8MB). Free memory was 131.6MB in the beginning and 193.3MB in the end (delta: -61.7MB). Peak memory consumption was 211.4MB. Max. memory is 16.1GB. * Witness Printer took 98.38ms. Allocated memory is still 352.3MB. Free memory was 193.3MB in the beginning and 189.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 48 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 31.1s, OverallIterations: 32, TraceHistogramMax: 13, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2156 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2092 mSDsluCounter, 8626 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7469 mSDsCounter, 604 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9048 IncrementalHoareTripleChecker+Invalid, 9652 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 604 mSolverCounterUnsat, 1157 mSDtfsCounter, 9048 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4803 GetRequests, 4053 SyntacticMatches, 160 SemanticMatches, 590 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6605 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=289occurred in iteration=19, InterpolantAutomatonStates: 422, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 32 MinimizatonAttempts, 421 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 4482 NumberOfCodeBlocks, 4239 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 6316 ConstructedInterpolants, 0 QuantifiedInterpolants, 12624 SizeOfPredicates, 57 NumberOfNonLiveVariables, 3809 ConjunctsInSsa, 293 ConjunctsInUnsatCore, 70 InterpolantComputations, 15 PerfectInterpolantSequences, 11648/14222 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Requires: (n <= 5) Ensures: (((((\result == 1) || (n != 1)) && ((\result == 0) || (0 < n))) && (n <= 5)) && ((2 == \result) || (3 != n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Requires: ((6 == n) || (n < 5)) Ensures: ((6 == n) || (n < 5)) RESULT: Ultimate proved your program to be correct! [2024-10-11 21:14:44,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE