./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 11:29:23,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 11:29:23,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 11:29:23,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 11:29:23,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 11:29:23,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 11:29:23,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 11:29:23,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 11:29:23,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 11:29:23,654 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 11:29:23,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 11:29:23,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 11:29:23,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 11:29:23,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 11:29:23,655 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 11:29:23,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 11:29:23,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 11:29:23,655 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 11:29:23,656 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 11:29:23,657 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 11:29:23,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 11:29:23,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 11:29:23,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 11:29:23,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:29:23,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 11:29:23,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 11:29:23,658 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/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 -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2025-03-04 11:29:23,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 11:29:23,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 11:29:23,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 11:29:23,878 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 11:29:23,878 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 11:29:23,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2025-03-04 11:29:24,999 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce678f15/e39b246fde3b42ed92f28866b05824e7/FLAG74d9a4eec [2025-03-04 11:29:25,187 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 11:29:25,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2025-03-04 11:29:25,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce678f15/e39b246fde3b42ed92f28866b05824e7/FLAG74d9a4eec [2025-03-04 11:29:25,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce678f15/e39b246fde3b42ed92f28866b05824e7 [2025-03-04 11:29:25,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 11:29:25,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 11:29:25,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 11:29:25,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 11:29:25,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 11:29:25,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2b0628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25, skipping insertion in model container [2025-03-04 11:29:25,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,572 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 11:29:25,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:29:25,684 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 11:29:25,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:29:25,705 INFO L204 MainTranslator]: Completed translation [2025-03-04 11:29:25,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25 WrapperNode [2025-03-04 11:29:25,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 11:29:25,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 11:29:25,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 11:29:25,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 11:29:25,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,727 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-03-04 11:29:25,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 11:29:25,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 11:29:25,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 11:29:25,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 11:29:25,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,745 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]. [2025-03-04 11:29:25,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,748 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 11:29:25,752 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 11:29:25,752 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 11:29:25,752 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 11:29:25,753 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (1/1) ... [2025-03-04 11:29:25,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:29:25,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:25,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 11:29:25,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 11:29:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 11:29:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 11:29:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-03-04 11:29:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-03-04 11:29:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-03-04 11:29:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-03-04 11:29:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 11:29:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 11:29:25,835 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 11:29:25,836 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 11:29:25,921 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-03-04 11:29:25,949 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-03-04 11:29:25,956 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-04 11:29:25,956 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 11:29:25,962 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 11:29:25,963 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 11:29:25,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:29:25 BoogieIcfgContainer [2025-03-04 11:29:25,963 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 11:29:25,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 11:29:25,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 11:29:25,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 11:29:25,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 11:29:25" (1/3) ... [2025-03-04 11:29:25,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2854cab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:29:25, skipping insertion in model container [2025-03-04 11:29:25,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:29:25" (2/3) ... [2025-03-04 11:29:25,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2854cab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:29:25, skipping insertion in model container [2025-03-04 11:29:25,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:29:25" (3/3) ... [2025-03-04 11:29:25,970 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2025-03-04 11:29:25,979 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 11:29:25,981 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_8-2.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-03-04 11:29:26,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 11:29:26,025 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;@3110f1a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 11:29:26,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-04 11:29:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 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) [2025-03-04 11:29:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 11:29:26,031 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:26,032 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:26,032 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:26,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1954105288, now seen corresponding path program 1 times [2025-03-04 11:29:26,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:26,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673498151] [2025-03-04 11:29:26,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:26,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 11:29:26,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 11:29:26,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:26,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:26,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673498151] [2025-03-04 11:29:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673498151] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:26,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:26,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 11:29:26,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297923290] [2025-03-04 11:29:26,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:26,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 11:29:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:26,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 11:29:26,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 11:29:26,169 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 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 3.0) 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) [2025-03-04 11:29:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:26,211 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2025-03-04 11:29:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 11:29:26,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2025-03-04 11:29:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:26,217 INFO L225 Difference]: With dead ends: 59 [2025-03-04 11:29:26,217 INFO L226 Difference]: Without dead ends: 45 [2025-03-04 11:29:26,219 INFO L434 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 [2025-03-04 11:29:26,221 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:26,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:26,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-04 11:29:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-03-04 11:29:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 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) [2025-03-04 11:29:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-03-04 11:29:26,256 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2025-03-04 11:29:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:26,257 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-03-04 11:29:26,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2025-03-04 11:29:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-03-04 11:29:26,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 11:29:26,258 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:26,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:26,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 11:29:26,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:26,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash -447721764, now seen corresponding path program 1 times [2025-03-04 11:29:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:26,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428630895] [2025-03-04 11:29:26,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:26,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 11:29:26,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 11:29:26,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:26,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428630895] [2025-03-04 11:29:26,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428630895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:26,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834886132] [2025-03-04 11:29:26,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:26,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:26,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:26,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:26,314 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 11:29:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:26,377 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2025-03-04 11:29:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 11:29:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:26,377 INFO L225 Difference]: With dead ends: 64 [2025-03-04 11:29:26,378 INFO L226 Difference]: Without dead ends: 58 [2025-03-04 11:29:26,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:29:26,378 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:26,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:26,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-04 11:29:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2025-03-04 11:29:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 11:29:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2025-03-04 11:29:26,386 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2025-03-04 11:29:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:26,387 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2025-03-04 11:29:26,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 11:29:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2025-03-04 11:29:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 11:29:26,388 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:26,388 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:26,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 11:29:26,389 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:26,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:26,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2145956475, now seen corresponding path program 1 times [2025-03-04 11:29:26,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:26,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403284723] [2025-03-04 11:29:26,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:26,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:26,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 11:29:26,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 11:29:26,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:26,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403284723] [2025-03-04 11:29:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403284723] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:26,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:26,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 11:29:26,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850003809] [2025-03-04 11:29:26,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:26,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 11:29:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:26,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 11:29:26,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 11:29:26,439 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-03-04 11:29:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:26,465 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2025-03-04 11:29:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 11:29:26,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2025-03-04 11:29:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:26,467 INFO L225 Difference]: With dead ends: 58 [2025-03-04 11:29:26,467 INFO L226 Difference]: Without dead ends: 56 [2025-03-04 11:29:26,467 INFO L434 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 [2025-03-04 11:29:26,468 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:26,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-04 11:29:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2025-03-04 11:29:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 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) [2025-03-04 11:29:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-03-04 11:29:26,477 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2025-03-04 11:29:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:26,477 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-03-04 11:29:26,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-03-04 11:29:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-03-04 11:29:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 11:29:26,478 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:26,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:26,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 11:29:26,478 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:26,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2100141288, now seen corresponding path program 1 times [2025-03-04 11:29:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:26,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967578180] [2025-03-04 11:29:26,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:26,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:26,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 11:29:26,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 11:29:26,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:26,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:26,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:26,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967578180] [2025-03-04 11:29:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967578180] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:26,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:26,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:29:26,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130730129] [2025-03-04 11:29:26,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:26,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:29:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:26,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:29:26,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:29:26,600 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2025-03-04 11:29:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:26,711 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2025-03-04 11:29:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:29:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2025-03-04 11:29:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:26,713 INFO L225 Difference]: With dead ends: 58 [2025-03-04 11:29:26,713 INFO L226 Difference]: Without dead ends: 54 [2025-03-04 11:29:26,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-04 11:29:26,713 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:26,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:29:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-04 11:29:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2025-03-04 11:29:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 11:29:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-03-04 11:29:26,721 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2025-03-04 11:29:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:26,721 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-03-04 11:29:26,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2025-03-04 11:29:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-03-04 11:29:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-04 11:29:26,722 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:26,722 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:26,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 11:29:26,722 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:26,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1831817774, now seen corresponding path program 1 times [2025-03-04 11:29:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:26,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208910787] [2025-03-04 11:29:26,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:26,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:26,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 11:29:26,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 11:29:26,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:26,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 11:29:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:26,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208910787] [2025-03-04 11:29:26,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208910787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:26,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:26,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:26,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119653732] [2025-03-04 11:29:26,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:26,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:26,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:26,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:26,806 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:29:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:26,839 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2025-03-04 11:29:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-03-04 11:29:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:26,840 INFO L225 Difference]: With dead ends: 74 [2025-03-04 11:29:26,840 INFO L226 Difference]: Without dead ends: 69 [2025-03-04 11:29:26,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:26,841 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 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 [2025-03-04 11:29:26,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-04 11:29:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-03-04 11:29:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2025-03-04 11:29:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2025-03-04 11:29:26,848 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2025-03-04 11:29:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:26,848 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2025-03-04 11:29:26,848 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) [2025-03-04 11:29:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2025-03-04 11:29:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-04 11:29:26,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:26,849 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:26,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 11:29:26,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:26,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash -631666365, now seen corresponding path program 1 times [2025-03-04 11:29:26,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:26,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383021472] [2025-03-04 11:29:26,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:26,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 11:29:26,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 11:29:26,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:26,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 11:29:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383021472] [2025-03-04 11:29:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383021472] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239917225] [2025-03-04 11:29:26,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:26,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:26,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:26,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 11:29:26,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 11:29:26,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 11:29:26,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:26,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:26,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 11:29:26,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:27,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:29:27,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239917225] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:27,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:29:27,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-03-04 11:29:27,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414498233] [2025-03-04 11:29:27,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:27,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:29:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:27,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:29:27,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-04 11:29:27,067 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:29:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:27,165 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2025-03-04 11:29:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:29:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-03-04 11:29:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:27,166 INFO L225 Difference]: With dead ends: 117 [2025-03-04 11:29:27,166 INFO L226 Difference]: Without dead ends: 63 [2025-03-04 11:29:27,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-04 11:29:27,167 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 31 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:27,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 176 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:29:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-03-04 11:29:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2025-03-04 11:29:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.2) internal successors, (54), 49 states have internal predecessors, (54), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2025-03-04 11:29:27,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2025-03-04 11:29:27,172 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 24 [2025-03-04 11:29:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:27,172 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2025-03-04 11:29:27,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:29:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2025-03-04 11:29:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-04 11:29:27,173 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:27,173 INFO L218 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] [2025-03-04 11:29:27,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:27,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-04 11:29:27,377 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:27,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2003454357, now seen corresponding path program 1 times [2025-03-04 11:29:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:27,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884736198] [2025-03-04 11:29:27,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:27,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:27,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-04 11:29:27,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 11:29:27,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:27,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 11:29:27,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884736198] [2025-03-04 11:29:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884736198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:27,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:27,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947834098] [2025-03-04 11:29:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:27,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:27,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:27,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:27,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:27,446 INFO L87 Difference]: Start difference. First operand 61 states and 75 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) [2025-03-04 11:29:27,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:27,473 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2025-03-04 11:29:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:27,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-03-04 11:29:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:27,474 INFO L225 Difference]: With dead ends: 75 [2025-03-04 11:29:27,474 INFO L226 Difference]: Without dead ends: 73 [2025-03-04 11:29:27,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:27,475 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:27,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-04 11:29:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2025-03-04 11:29:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 56 states have internal predecessors, (61), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2025-03-04 11:29:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2025-03-04 11:29:27,481 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 29 [2025-03-04 11:29:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:27,481 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2025-03-04 11:29:27,481 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) [2025-03-04 11:29:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2025-03-04 11:29:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-04 11:29:27,482 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:27,482 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 11:29:27,482 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:27,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1424432597, now seen corresponding path program 1 times [2025-03-04 11:29:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188683199] [2025-03-04 11:29:27,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:27,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:27,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 11:29:27,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 11:29:27,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:27,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 11:29:27,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:27,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188683199] [2025-03-04 11:29:27,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188683199] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:27,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43816634] [2025-03-04 11:29:27,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:27,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:27,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:27,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:27,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 11:29:27,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 11:29:27,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 11:29:27,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:27,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:27,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 11:29:27,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:27,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 11:29:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43816634] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:27,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-04 11:29:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984636954] [2025-03-04 11:29:27,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:27,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 11:29:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:27,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 11:29:27,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-03-04 11:29:27,796 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:29:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:28,174 INFO L93 Difference]: Finished difference Result 192 states and 253 transitions. [2025-03-04 11:29:28,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:29:28,174 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2025-03-04 11:29:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:28,175 INFO L225 Difference]: With dead ends: 192 [2025-03-04 11:29:28,175 INFO L226 Difference]: Without dead ends: 131 [2025-03-04 11:29:28,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:29:28,176 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 122 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:28,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 640 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:29:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-04 11:29:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2025-03-04 11:29:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 92 states have internal predecessors, (103), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (27), 16 states have call predecessors, (27), 14 states have call successors, (27) [2025-03-04 11:29:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2025-03-04 11:29:28,189 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 30 [2025-03-04 11:29:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:28,189 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2025-03-04 11:29:28,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:29:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2025-03-04 11:29:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-04 11:29:28,190 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:28,190 INFO L218 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] [2025-03-04 11:29:28,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 11:29:28,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-04 11:29:28,390 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:28,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2119279126, now seen corresponding path program 2 times [2025-03-04 11:29:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:28,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178076695] [2025-03-04 11:29:28,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:28,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-04 11:29:28,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 11:29:28,408 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:28,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-04 11:29:28,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:28,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178076695] [2025-03-04 11:29:28,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178076695] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:28,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925760135] [2025-03-04 11:29:28,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:28,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:28,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:28,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:28,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 11:29:28,524 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-04 11:29:28,535 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 11:29:28,535 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:28,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:28,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 11:29:28,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-04 11:29:28,567 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:29:28,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925760135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:28,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:29:28,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-03-04 11:29:28,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163451437] [2025-03-04 11:29:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:28,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:28,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:28,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:28,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:29:28,567 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:29:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:28,587 INFO L93 Difference]: Finished difference Result 124 states and 157 transitions. [2025-03-04 11:29:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:28,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2025-03-04 11:29:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:28,591 INFO L225 Difference]: With dead ends: 124 [2025-03-04 11:29:28,591 INFO L226 Difference]: Without dead ends: 123 [2025-03-04 11:29:28,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:29:28,591 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 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 [2025-03-04 11:29:28,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-04 11:29:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2025-03-04 11:29:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 94 states have internal predecessors, (107), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (27), 18 states have call predecessors, (27), 14 states have call successors, (27) [2025-03-04 11:29:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2025-03-04 11:29:28,605 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 42 [2025-03-04 11:29:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:28,605 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2025-03-04 11:29:28,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:29:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2025-03-04 11:29:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-04 11:29:28,606 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:28,606 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:28,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:28,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:28,807 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:28,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1273143481, now seen corresponding path program 1 times [2025-03-04 11:29:28,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:28,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176850698] [2025-03-04 11:29:28,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:28,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:28,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-04 11:29:28,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 11:29:28,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:28,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-04 11:29:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176850698] [2025-03-04 11:29:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176850698] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237568196] [2025-03-04 11:29:28,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:28,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:28,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:28,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:28,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 11:29:28,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-04 11:29:28,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 11:29:28,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:28,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:28,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 11:29:28,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:29,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 11:29:29,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237568196] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:29,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:29,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23 [2025-03-04 11:29:29,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49770298] [2025-03-04 11:29:29,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:29,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 11:29:29,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:29,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 11:29:29,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:29:29,213 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:29:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:29,626 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2025-03-04 11:29:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-04 11:29:29,629 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2025-03-04 11:29:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:29,631 INFO L225 Difference]: With dead ends: 309 [2025-03-04 11:29:29,632 INFO L226 Difference]: Without dead ends: 205 [2025-03-04 11:29:29,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2025-03-04 11:29:29,633 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 194 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:29,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 719 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:29:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-03-04 11:29:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 185. [2025-03-04 11:29:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 146 states have internal predecessors, (168), 24 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (40), 28 states have call predecessors, (40), 23 states have call successors, (40) [2025-03-04 11:29:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 232 transitions. [2025-03-04 11:29:29,645 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 232 transitions. Word has length 43 [2025-03-04 11:29:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:29,645 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 232 transitions. [2025-03-04 11:29:29,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:29:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 232 transitions. [2025-03-04 11:29:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-04 11:29:29,647 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:29,647 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:29,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:29,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:29,851 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:29,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1449509820, now seen corresponding path program 1 times [2025-03-04 11:29:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:29,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237424334] [2025-03-04 11:29:29,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:29,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 11:29:29,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 11:29:29,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:29,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-04 11:29:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237424334] [2025-03-04 11:29:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237424334] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932058836] [2025-03-04 11:29:29,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:29,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:29,906 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:29,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 11:29:29,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 11:29:29,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 11:29:29,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:29,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:29,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 11:29:29,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-04 11:29:29,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-04 11:29:30,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932058836] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:30,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:30,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2025-03-04 11:29:30,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649311944] [2025-03-04 11:29:30,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:30,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 11:29:30,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:30,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 11:29:30,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-03-04 11:29:30,019 INFO L87 Difference]: Start difference. First operand 185 states and 232 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:29:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:30,074 INFO L93 Difference]: Finished difference Result 204 states and 262 transitions. [2025-03-04 11:29:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 11:29:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 60 [2025-03-04 11:29:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:30,076 INFO L225 Difference]: With dead ends: 204 [2025-03-04 11:29:30,076 INFO L226 Difference]: Without dead ends: 202 [2025-03-04 11:29:30,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-03-04 11:29:30,076 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:30,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 241 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-04 11:29:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2025-03-04 11:29:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.1554054054054055) internal successors, (171), 149 states have internal predecessors, (171), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (45), 29 states have call predecessors, (45), 23 states have call successors, (45) [2025-03-04 11:29:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 240 transitions. [2025-03-04 11:29:30,093 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 240 transitions. Word has length 60 [2025-03-04 11:29:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:30,093 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 240 transitions. [2025-03-04 11:29:30,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 11:29:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 240 transitions. [2025-03-04 11:29:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 11:29:30,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:30,098 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:30,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-04 11:29:30,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:30,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -526707704, now seen corresponding path program 1 times [2025-03-04 11:29:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765288747] [2025-03-04 11:29:30,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:30,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 11:29:30,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 11:29:30,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:30,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-04 11:29:30,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765288747] [2025-03-04 11:29:30,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765288747] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112185203] [2025-03-04 11:29:30,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:30,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:30,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:30,366 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:30,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 11:29:30,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 11:29:30,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 11:29:30,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:30,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:30,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 11:29:30,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:29:30,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 11:29:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112185203] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:30,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24 [2025-03-04 11:29:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174121074] [2025-03-04 11:29:30,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:30,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 11:29:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:30,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 11:29:30,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:29:30,814 INFO L87 Difference]: Start difference. First operand 189 states and 240 transitions. Second operand has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 17 states have internal predecessors, (75), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:29:31,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:31,296 INFO L93 Difference]: Finished difference Result 408 states and 522 transitions. [2025-03-04 11:29:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 11:29:31,296 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 17 states have internal predecessors, (75), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 61 [2025-03-04 11:29:31,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:31,298 INFO L225 Difference]: With dead ends: 408 [2025-03-04 11:29:31,298 INFO L226 Difference]: Without dead ends: 240 [2025-03-04 11:29:31,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 95 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2025-03-04 11:29:31,299 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 219 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:31,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1025 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 11:29:31,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-03-04 11:29:31,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2025-03-04 11:29:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 171 states have (on average 1.1461988304093567) internal successors, (196), 170 states have internal predecessors, (196), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 35 states have call predecessors, (54), 27 states have call successors, (54) [2025-03-04 11:29:31,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 278 transitions. [2025-03-04 11:29:31,309 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 278 transitions. Word has length 61 [2025-03-04 11:29:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:31,309 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 278 transitions. [2025-03-04 11:29:31,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 17 states have internal predecessors, (75), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-04 11:29:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 278 transitions. [2025-03-04 11:29:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-04 11:29:31,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:31,311 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:31,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 11:29:31,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:31,511 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:31,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1350583663, now seen corresponding path program 1 times [2025-03-04 11:29:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:31,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365628347] [2025-03-04 11:29:31,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:31,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:31,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-04 11:29:31,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-04 11:29:31,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:31,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-03-04 11:29:31,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365628347] [2025-03-04 11:29:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365628347] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:31,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:31,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:31,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183419] [2025-03-04 11:29:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:31,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:31,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:31,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:31,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:31,569 INFO L87 Difference]: Start difference. First operand 217 states and 278 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:29:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:31,592 INFO L93 Difference]: Finished difference Result 231 states and 295 transitions. [2025-03-04 11:29:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:31,592 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2025-03-04 11:29:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:31,593 INFO L225 Difference]: With dead ends: 231 [2025-03-04 11:29:31,593 INFO L226 Difference]: Without dead ends: 230 [2025-03-04 11:29:31,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:31,594 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:31,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-03-04 11:29:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 213. [2025-03-04 11:29:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 168 states have (on average 1.1488095238095237) internal successors, (193), 167 states have internal predecessors, (193), 27 states have call successors, (27), 11 states have call predecessors, (27), 14 states have return successors, (51), 34 states have call predecessors, (51), 26 states have call successors, (51) [2025-03-04 11:29:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 271 transitions. [2025-03-04 11:29:31,606 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 271 transitions. Word has length 62 [2025-03-04 11:29:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:31,607 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 271 transitions. [2025-03-04 11:29:31,607 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:29:31,607 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 271 transitions. [2025-03-04 11:29:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-04 11:29:31,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:31,608 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:31,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 11:29:31,608 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:31,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash -187532730, now seen corresponding path program 1 times [2025-03-04 11:29:31,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:31,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925673512] [2025-03-04 11:29:31,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:31,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-04 11:29:31,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-04 11:29:31,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:31,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-04 11:29:31,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:31,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925673512] [2025-03-04 11:29:31,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925673512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:31,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:31,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928559071] [2025-03-04 11:29:31,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:31,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:31,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:31,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:31,682 INFO L87 Difference]: Start difference. First operand 213 states and 271 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 11:29:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:31,712 INFO L93 Difference]: Finished difference Result 223 states and 283 transitions. [2025-03-04 11:29:31,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:31,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2025-03-04 11:29:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:31,713 INFO L225 Difference]: With dead ends: 223 [2025-03-04 11:29:31,713 INFO L226 Difference]: Without dead ends: 222 [2025-03-04 11:29:31,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:31,714 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:31,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 182 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-03-04 11:29:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 207. [2025-03-04 11:29:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 164 states have (on average 1.1524390243902438) internal successors, (189), 162 states have internal predecessors, (189), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (43), 33 states have call predecessors, (43), 25 states have call successors, (43) [2025-03-04 11:29:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 258 transitions. [2025-03-04 11:29:31,722 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 258 transitions. Word has length 77 [2025-03-04 11:29:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:31,723 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 258 transitions. [2025-03-04 11:29:31,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 11:29:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 258 transitions. [2025-03-04 11:29:31,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-04 11:29:31,723 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:31,723 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2025-03-04 11:29:31,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 11:29:31,724 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:31,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash 334468081, now seen corresponding path program 1 times [2025-03-04 11:29:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489997576] [2025-03-04 11:29:31,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:31,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-04 11:29:31,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-04 11:29:31,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:31,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 11:29:31,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:31,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489997576] [2025-03-04 11:29:31,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489997576] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:31,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483744662] [2025-03-04 11:29:31,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:31,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:31,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:31,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:31,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 11:29:31,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-04 11:29:31,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-04 11:29:31,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:31,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:31,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 11:29:31,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 11:29:32,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 11:29:32,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483744662] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:32,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:32,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2025-03-04 11:29:32,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418532276] [2025-03-04 11:29:32,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:32,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 11:29:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:32,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 11:29:32,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2025-03-04 11:29:32,233 INFO L87 Difference]: Start difference. First operand 207 states and 258 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 11:29:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:32,579 INFO L93 Difference]: Finished difference Result 548 states and 727 transitions. [2025-03-04 11:29:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 11:29:32,579 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2025-03-04 11:29:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:32,581 INFO L225 Difference]: With dead ends: 548 [2025-03-04 11:29:32,581 INFO L226 Difference]: Without dead ends: 362 [2025-03-04 11:29:32,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 150 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2025-03-04 11:29:32,587 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 251 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:32,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 321 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-03-04 11:29:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 352. [2025-03-04 11:29:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 281 states have (on average 1.1530249110320285) internal successors, (324), 275 states have internal predecessors, (324), 44 states have call successors, (44), 18 states have call predecessors, (44), 23 states have return successors, (74), 58 states have call predecessors, (74), 43 states have call successors, (74) [2025-03-04 11:29:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 442 transitions. [2025-03-04 11:29:32,608 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 442 transitions. Word has length 80 [2025-03-04 11:29:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:32,608 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 442 transitions. [2025-03-04 11:29:32,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 11:29:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 442 transitions. [2025-03-04 11:29:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-04 11:29:32,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:32,609 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2025-03-04 11:29:32,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:32,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:32,813 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:32,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -564968211, now seen corresponding path program 1 times [2025-03-04 11:29:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649151527] [2025-03-04 11:29:32,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:32,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-04 11:29:32,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-04 11:29:32,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:32,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-03-04 11:29:32,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649151527] [2025-03-04 11:29:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649151527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:32,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:32,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310965881] [2025-03-04 11:29:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:32,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:32,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:32,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:32,855 INFO L87 Difference]: Start difference. First operand 352 states and 442 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 11:29:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:32,876 INFO L93 Difference]: Finished difference Result 380 states and 481 transitions. [2025-03-04 11:29:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:32,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2025-03-04 11:29:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:32,878 INFO L225 Difference]: With dead ends: 380 [2025-03-04 11:29:32,878 INFO L226 Difference]: Without dead ends: 379 [2025-03-04 11:29:32,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:32,879 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:32,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-03-04 11:29:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 365. [2025-03-04 11:29:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 292 states have (on average 1.1472602739726028) internal successors, (335), 285 states have internal predecessors, (335), 44 states have call successors, (44), 18 states have call predecessors, (44), 25 states have return successors, (83), 61 states have call predecessors, (83), 43 states have call successors, (83) [2025-03-04 11:29:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 462 transitions. [2025-03-04 11:29:32,892 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 462 transitions. Word has length 74 [2025-03-04 11:29:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:32,892 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 462 transitions. [2025-03-04 11:29:32,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 11:29:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 462 transitions. [2025-03-04 11:29:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-04 11:29:32,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:32,893 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1] [2025-03-04 11:29:32,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 11:29:32,893 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:32,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash -367593985, now seen corresponding path program 1 times [2025-03-04 11:29:32,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929696927] [2025-03-04 11:29:32,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:32,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 11:29:32,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 11:29:32,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:32,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2025-03-04 11:29:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929696927] [2025-03-04 11:29:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929696927] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422079032] [2025-03-04 11:29:32,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:32,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:32,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:32,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:32,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 11:29:33,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 11:29:33,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 11:29:33,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:33,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:33,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 11:29:33,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-04 11:29:33,107 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:29:33,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422079032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:33,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:29:33,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2025-03-04 11:29:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971440204] [2025-03-04 11:29:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:33,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 11:29:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:33,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 11:29:33,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:29:33,108 INFO L87 Difference]: Start difference. First operand 365 states and 462 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 11:29:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:33,162 INFO L93 Difference]: Finished difference Result 463 states and 611 transitions. [2025-03-04 11:29:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 11:29:33,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 75 [2025-03-04 11:29:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:33,164 INFO L225 Difference]: With dead ends: 463 [2025-03-04 11:29:33,164 INFO L226 Difference]: Without dead ends: 462 [2025-03-04 11:29:33,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:29:33,165 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:33,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 206 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:33,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2025-03-04 11:29:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 401. [2025-03-04 11:29:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 321 states have (on average 1.1495327102803738) internal successors, (369), 311 states have internal predecessors, (369), 47 states have call successors, (47), 18 states have call predecessors, (47), 29 states have return successors, (108), 71 states have call predecessors, (108), 46 states have call successors, (108) [2025-03-04 11:29:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 524 transitions. [2025-03-04 11:29:33,182 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 524 transitions. Word has length 75 [2025-03-04 11:29:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:33,182 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 524 transitions. [2025-03-04 11:29:33,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 11:29:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 524 transitions. [2025-03-04 11:29:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 11:29:33,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:33,184 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:33,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 11:29:33,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-04 11:29:33,384 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:33,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:33,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1572506541, now seen corresponding path program 1 times [2025-03-04 11:29:33,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:33,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632694658] [2025-03-04 11:29:33,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:33,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:33,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 11:29:33,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 11:29:33,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:33,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2025-03-04 11:29:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632694658] [2025-03-04 11:29:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632694658] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514416969] [2025-03-04 11:29:33,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:33,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:33,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:33,441 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:33,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 11:29:33,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 11:29:33,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 11:29:33,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:33,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:33,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 11:29:33,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 135 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 11:29:33,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 75 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 11:29:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514416969] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:33,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:33,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 22 [2025-03-04 11:29:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078556189] [2025-03-04 11:29:33,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:33,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 11:29:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:33,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 11:29:33,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:29:33,871 INFO L87 Difference]: Start difference. First operand 401 states and 524 transitions. Second operand has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 14 states have internal predecessors, (95), 11 states have call successors, (20), 10 states have call predecessors, (20), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-04 11:29:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:34,294 INFO L93 Difference]: Finished difference Result 503 states and 645 transitions. [2025-03-04 11:29:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-04 11:29:34,294 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 14 states have internal predecessors, (95), 11 states have call successors, (20), 10 states have call predecessors, (20), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 93 [2025-03-04 11:29:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:34,296 INFO L225 Difference]: With dead ends: 503 [2025-03-04 11:29:34,296 INFO L226 Difference]: Without dead ends: 441 [2025-03-04 11:29:34,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 17 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:29:34,297 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 234 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:34,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 330 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:29:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2025-03-04 11:29:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 413. [2025-03-04 11:29:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 330 states have (on average 1.1454545454545455) internal successors, (378), 320 states have internal predecessors, (378), 49 states have call successors, (49), 19 states have call predecessors, (49), 30 states have return successors, (116), 73 states have call predecessors, (116), 48 states have call successors, (116) [2025-03-04 11:29:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 543 transitions. [2025-03-04 11:29:34,314 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 543 transitions. Word has length 93 [2025-03-04 11:29:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:34,314 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 543 transitions. [2025-03-04 11:29:34,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 14 states have internal predecessors, (95), 11 states have call successors, (20), 10 states have call predecessors, (20), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-04 11:29:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 543 transitions. [2025-03-04 11:29:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-04 11:29:34,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:34,315 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:34,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 11:29:34,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 11:29:34,520 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:34,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1678854214, now seen corresponding path program 1 times [2025-03-04 11:29:34,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:34,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166954802] [2025-03-04 11:29:34,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:34,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:34,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-04 11:29:34,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-04 11:29:34,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:34,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-04 11:29:34,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166954802] [2025-03-04 11:29:34,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166954802] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:34,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:34,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956415020] [2025-03-04 11:29:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:34,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:34,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:34,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:34,556 INFO L87 Difference]: Start difference. First operand 413 states and 543 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) [2025-03-04 11:29:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:34,601 INFO L93 Difference]: Finished difference Result 428 states and 563 transitions. [2025-03-04 11:29:34,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:34,601 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 78 [2025-03-04 11:29:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:34,603 INFO L225 Difference]: With dead ends: 428 [2025-03-04 11:29:34,603 INFO L226 Difference]: Without dead ends: 427 [2025-03-04 11:29:34,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:34,604 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 145 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 [2025-03-04 11:29:34,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 145 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2025-03-04 11:29:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 413. [2025-03-04 11:29:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 330 states have (on average 1.1393939393939394) internal successors, (376), 320 states have internal predecessors, (376), 49 states have call successors, (49), 19 states have call predecessors, (49), 30 states have return successors, (116), 73 states have call predecessors, (116), 48 states have call successors, (116) [2025-03-04 11:29:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 541 transitions. [2025-03-04 11:29:34,619 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 541 transitions. Word has length 78 [2025-03-04 11:29:34,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:34,619 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 541 transitions. [2025-03-04 11:29:34,620 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) [2025-03-04 11:29:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 541 transitions. [2025-03-04 11:29:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-04 11:29:34,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:34,620 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:34,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-04 11:29:34,621 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:34,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1259276991, now seen corresponding path program 1 times [2025-03-04 11:29:34,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:34,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072882878] [2025-03-04 11:29:34,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:34,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:34,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 11:29:34,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 11:29:34,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:34,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-03-04 11:29:34,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072882878] [2025-03-04 11:29:34,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072882878] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666095456] [2025-03-04 11:29:34,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:34,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:34,665 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:34,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 11:29:34,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 11:29:34,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 11:29:34,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:34,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:34,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-04 11:29:34,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-04 11:29:34,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:29:34,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666095456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:34,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:29:34,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4] total 24 [2025-03-04 11:29:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973165955] [2025-03-04 11:29:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:34,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 11:29:34,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:34,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 11:29:34,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:29:34,881 INFO L87 Difference]: Start difference. First operand 413 states and 541 transitions. Second operand has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-04 11:29:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:35,172 INFO L93 Difference]: Finished difference Result 798 states and 1082 transitions. [2025-03-04 11:29:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 11:29:35,173 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 97 [2025-03-04 11:29:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:35,175 INFO L225 Difference]: With dead ends: 798 [2025-03-04 11:29:35,175 INFO L226 Difference]: Without dead ends: 445 [2025-03-04 11:29:35,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 11:29:35,179 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 277 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:35,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 310 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2025-03-04 11:29:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 436. [2025-03-04 11:29:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 347 states have (on average 1.138328530259366) internal successors, (395), 339 states have internal predecessors, (395), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (118), 75 states have call predecessors, (118), 50 states have call successors, (118) [2025-03-04 11:29:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 564 transitions. [2025-03-04 11:29:35,201 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 564 transitions. Word has length 97 [2025-03-04 11:29:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:35,201 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 564 transitions. [2025-03-04 11:29:35,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-04 11:29:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 564 transitions. [2025-03-04 11:29:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 11:29:35,202 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:35,203 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2025-03-04 11:29:35,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 11:29:35,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:35,403 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:35,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash -504873074, now seen corresponding path program 1 times [2025-03-04 11:29:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657943367] [2025-03-04 11:29:35,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:35,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 11:29:35,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 11:29:35,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:35,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-04 11:29:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657943367] [2025-03-04 11:29:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657943367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:35,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:35,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064773670] [2025-03-04 11:29:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:35,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:35,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:35,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:35,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:35,455 INFO L87 Difference]: Start difference. First operand 436 states and 564 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) [2025-03-04 11:29:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:35,483 INFO L93 Difference]: Finished difference Result 451 states and 581 transitions. [2025-03-04 11:29:35,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:35,483 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 79 [2025-03-04 11:29:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:35,485 INFO L225 Difference]: With dead ends: 451 [2025-03-04 11:29:35,485 INFO L226 Difference]: Without dead ends: 450 [2025-03-04 11:29:35,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:35,486 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:35,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2025-03-04 11:29:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2025-03-04 11:29:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 347 states have (on average 1.1325648414985592) internal successors, (393), 339 states have internal predecessors, (393), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (118), 75 states have call predecessors, (118), 50 states have call successors, (118) [2025-03-04 11:29:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 562 transitions. [2025-03-04 11:29:35,501 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 562 transitions. Word has length 79 [2025-03-04 11:29:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:35,501 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 562 transitions. [2025-03-04 11:29:35,501 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) [2025-03-04 11:29:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 562 transitions. [2025-03-04 11:29:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 11:29:35,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:35,503 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:35,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-04 11:29:35,503 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:35,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1621670381, now seen corresponding path program 1 times [2025-03-04 11:29:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:35,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733711466] [2025-03-04 11:29:35,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:35,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 11:29:35,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 11:29:35,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:35,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-03-04 11:29:35,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733711466] [2025-03-04 11:29:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733711466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:29:35,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:29:35,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:29:35,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46739182] [2025-03-04 11:29:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:29:35,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:29:35,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:35,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:29:35,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:35,543 INFO L87 Difference]: Start difference. First operand 436 states and 562 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-04 11:29:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:35,571 INFO L93 Difference]: Finished difference Result 466 states and 603 transitions. [2025-03-04 11:29:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:29:35,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2025-03-04 11:29:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:35,573 INFO L225 Difference]: With dead ends: 466 [2025-03-04 11:29:35,573 INFO L226 Difference]: Without dead ends: 465 [2025-03-04 11:29:35,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:29:35,576 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 147 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 [2025-03-04 11:29:35,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 147 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-03-04 11:29:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 442. [2025-03-04 11:29:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 353 states have (on average 1.1303116147308783) internal successors, (399), 342 states have internal predecessors, (399), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (118), 78 states have call predecessors, (118), 50 states have call successors, (118) [2025-03-04 11:29:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 568 transitions. [2025-03-04 11:29:35,600 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 568 transitions. Word has length 87 [2025-03-04 11:29:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:35,600 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 568 transitions. [2025-03-04 11:29:35,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-04 11:29:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 568 transitions. [2025-03-04 11:29:35,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-04 11:29:35,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:35,601 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1] [2025-03-04 11:29:35,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-04 11:29:35,602 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:35,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1267825733, now seen corresponding path program 1 times [2025-03-04 11:29:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013766159] [2025-03-04 11:29:35,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:35,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 11:29:35,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 11:29:35,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:35,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-04 11:29:35,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013766159] [2025-03-04 11:29:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013766159] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590931404] [2025-03-04 11:29:35,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:35,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:35,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:35,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:35,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 11:29:35,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 11:29:35,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 11:29:35,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:35,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:35,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:29:35,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 11:29:35,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-04 11:29:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590931404] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:36,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2025-03-04 11:29:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937890793] [2025-03-04 11:29:36,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:36,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 11:29:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:36,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 11:29:36,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-03-04 11:29:36,057 INFO L87 Difference]: Start difference. First operand 442 states and 568 transitions. Second operand has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-04 11:29:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:36,349 INFO L93 Difference]: Finished difference Result 843 states and 1085 transitions. [2025-03-04 11:29:36,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 11:29:36,350 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 88 [2025-03-04 11:29:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:36,352 INFO L225 Difference]: With dead ends: 843 [2025-03-04 11:29:36,352 INFO L226 Difference]: Without dead ends: 469 [2025-03-04 11:29:36,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 167 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2025-03-04 11:29:36,353 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 163 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:36,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 579 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-03-04 11:29:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 442. [2025-03-04 11:29:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 353 states have (on average 1.1303116147308783) internal successors, (399), 342 states have internal predecessors, (399), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (112), 78 states have call predecessors, (112), 50 states have call successors, (112) [2025-03-04 11:29:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 562 transitions. [2025-03-04 11:29:36,371 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 562 transitions. Word has length 88 [2025-03-04 11:29:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:36,372 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 562 transitions. [2025-03-04 11:29:36,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-04 11:29:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 562 transitions. [2025-03-04 11:29:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-04 11:29:36,373 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:36,373 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1] [2025-03-04 11:29:36,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 11:29:36,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-04 11:29:36,574 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:36,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:36,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1960176973, now seen corresponding path program 1 times [2025-03-04 11:29:36,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:36,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121730173] [2025-03-04 11:29:36,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:36,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:36,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-04 11:29:36,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-04 11:29:36,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:36,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-04 11:29:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:36,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121730173] [2025-03-04 11:29:36,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121730173] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:36,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053678005] [2025-03-04 11:29:36,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:36,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:36,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:36,698 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:36,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 11:29:36,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-04 11:29:36,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-04 11:29:36,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:36,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:36,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:29:36,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-04 11:29:36,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-04 11:29:36,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053678005] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:36,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:36,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2025-03-04 11:29:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96070691] [2025-03-04 11:29:36,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:36,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 11:29:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:36,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 11:29:36,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:29:36,932 INFO L87 Difference]: Start difference. First operand 442 states and 562 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-04 11:29:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:37,154 INFO L93 Difference]: Finished difference Result 799 states and 1016 transitions. [2025-03-04 11:29:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 11:29:37,155 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2025-03-04 11:29:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:37,157 INFO L225 Difference]: With dead ends: 799 [2025-03-04 11:29:37,157 INFO L226 Difference]: Without dead ends: 446 [2025-03-04 11:29:37,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 170 SyntacticMatches, 12 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:29:37,158 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 143 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:37,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 619 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2025-03-04 11:29:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 436. [2025-03-04 11:29:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 347 states have (on average 1.1325648414985592) internal successors, (393), 339 states have internal predecessors, (393), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (109), 75 states have call predecessors, (109), 50 states have call successors, (109) [2025-03-04 11:29:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 553 transitions. [2025-03-04 11:29:37,173 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 553 transitions. Word has length 89 [2025-03-04 11:29:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:37,173 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 553 transitions. [2025-03-04 11:29:37,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-04 11:29:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 553 transitions. [2025-03-04 11:29:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-04 11:29:37,175 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:37,175 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2025-03-04 11:29:37,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 11:29:37,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-04 11:29:37,376 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:37,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1322709056, now seen corresponding path program 1 times [2025-03-04 11:29:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955094907] [2025-03-04 11:29:37,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:37,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-04 11:29:37,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-04 11:29:37,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:37,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-04 11:29:37,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955094907] [2025-03-04 11:29:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955094907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815359121] [2025-03-04 11:29:37,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:37,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:37,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:37,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:37,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 11:29:37,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-04 11:29:37,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-04 11:29:37,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:37,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:37,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 11:29:37,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2025-03-04 11:29:37,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2025-03-04 11:29:37,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815359121] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:37,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:37,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31 [2025-03-04 11:29:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168821451] [2025-03-04 11:29:37,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:37,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-04 11:29:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:37,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-04 11:29:37,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2025-03-04 11:29:37,948 INFO L87 Difference]: Start difference. First operand 436 states and 553 transitions. Second operand has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-04 11:29:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:38,815 INFO L93 Difference]: Finished difference Result 909 states and 1241 transitions. [2025-03-04 11:29:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-03-04 11:29:38,815 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 92 [2025-03-04 11:29:38,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:38,817 INFO L225 Difference]: With dead ends: 909 [2025-03-04 11:29:38,817 INFO L226 Difference]: Without dead ends: 548 [2025-03-04 11:29:38,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=612, Invalid=4080, Unknown=0, NotChecked=0, Total=4692 [2025-03-04 11:29:38,824 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 334 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:38,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 406 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 11:29:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2025-03-04 11:29:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 436. [2025-03-04 11:29:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 344 states have (on average 1.1133720930232558) internal successors, (383), 343 states have internal predecessors, (383), 52 states have call successors, (52), 21 states have call predecessors, (52), 36 states have return successors, (116), 71 states have call predecessors, (116), 51 states have call successors, (116) [2025-03-04 11:29:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 551 transitions. [2025-03-04 11:29:38,844 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 551 transitions. Word has length 92 [2025-03-04 11:29:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:38,845 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 551 transitions. [2025-03-04 11:29:38,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-04 11:29:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 551 transitions. [2025-03-04 11:29:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 11:29:38,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:38,845 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:38,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:39,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-04 11:29:39,046 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:39,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash 669238849, now seen corresponding path program 1 times [2025-03-04 11:29:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479072396] [2025-03-04 11:29:39,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:39,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 11:29:39,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 11:29:39,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:39,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 47 proven. 72 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 11:29:39,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479072396] [2025-03-04 11:29:39,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479072396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510346993] [2025-03-04 11:29:39,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:39,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:39,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:39,260 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:39,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 11:29:39,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 11:29:39,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 11:29:39,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:39,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:39,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-04 11:29:39,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-03-04 11:29:39,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-04 11:29:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510346993] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:39,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9, 11] total 36 [2025-03-04 11:29:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826734316] [2025-03-04 11:29:39,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:39,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-04 11:29:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:39,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-04 11:29:39,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:29:39,768 INFO L87 Difference]: Start difference. First operand 436 states and 551 transitions. Second operand has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-03-04 11:29:41,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:41,462 INFO L93 Difference]: Finished difference Result 1201 states and 1754 transitions. [2025-03-04 11:29:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-03-04 11:29:41,463 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 93 [2025-03-04 11:29:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:41,467 INFO L225 Difference]: With dead ends: 1201 [2025-03-04 11:29:41,468 INFO L226 Difference]: Without dead ends: 801 [2025-03-04 11:29:41,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3209 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1392, Invalid=9950, Unknown=0, NotChecked=0, Total=11342 [2025-03-04 11:29:41,474 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 381 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:41,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 511 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 11:29:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2025-03-04 11:29:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 602. [2025-03-04 11:29:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 479 states have (on average 1.11482254697286) internal successors, (534), 464 states have internal predecessors, (534), 69 states have call successors, (69), 20 states have call predecessors, (69), 50 states have return successors, (307), 117 states have call predecessors, (307), 68 states have call successors, (307) [2025-03-04 11:29:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 910 transitions. [2025-03-04 11:29:41,508 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 910 transitions. Word has length 93 [2025-03-04 11:29:41,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:41,509 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 910 transitions. [2025-03-04 11:29:41,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-03-04 11:29:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 910 transitions. [2025-03-04 11:29:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-04 11:29:41,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:41,510 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:41,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 11:29:41,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:41,714 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:41,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1499915559, now seen corresponding path program 1 times [2025-03-04 11:29:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247689910] [2025-03-04 11:29:41,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:41,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-04 11:29:41,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-04 11:29:41,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:41,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-03-04 11:29:41,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247689910] [2025-03-04 11:29:41,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247689910] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581958976] [2025-03-04 11:29:41,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:41,772 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:41,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 11:29:41,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-04 11:29:41,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-04 11:29:41,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:41,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:41,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:29:41,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-04 11:29:41,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-04 11:29:42,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581958976] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:42,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:42,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 21 [2025-03-04 11:29:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231242303] [2025-03-04 11:29:42,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:42,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 11:29:42,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:42,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 11:29:42,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:29:42,175 INFO L87 Difference]: Start difference. First operand 602 states and 910 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-03-04 11:29:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:42,383 INFO L93 Difference]: Finished difference Result 1147 states and 1887 transitions. [2025-03-04 11:29:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 11:29:42,384 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 106 [2025-03-04 11:29:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:42,387 INFO L225 Difference]: With dead ends: 1147 [2025-03-04 11:29:42,387 INFO L226 Difference]: Without dead ends: 612 [2025-03-04 11:29:42,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2025-03-04 11:29:42,390 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 202 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:42,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 471 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:29:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2025-03-04 11:29:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 602. [2025-03-04 11:29:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 479 states have (on average 1.11482254697286) internal successors, (534), 464 states have internal predecessors, (534), 69 states have call successors, (69), 20 states have call predecessors, (69), 50 states have return successors, (305), 117 states have call predecessors, (305), 68 states have call successors, (305) [2025-03-04 11:29:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 908 transitions. [2025-03-04 11:29:42,413 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 908 transitions. Word has length 106 [2025-03-04 11:29:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:42,414 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 908 transitions. [2025-03-04 11:29:42,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-03-04 11:29:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 908 transitions. [2025-03-04 11:29:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-04 11:29:42,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:42,414 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:42,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 11:29:42,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-04 11:29:42,615 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:42,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:42,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1413499777, now seen corresponding path program 2 times [2025-03-04 11:29:42,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:42,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277099984] [2025-03-04 11:29:42,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:42,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:42,620 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-03-04 11:29:42,624 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-03-04 11:29:42,625 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:42,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-04 11:29:42,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:42,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277099984] [2025-03-04 11:29:42,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277099984] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:42,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076871662] [2025-03-04 11:29:42,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:42,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:42,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:42,823 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:42,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 11:29:42,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-03-04 11:29:42,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-03-04 11:29:42,870 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:42,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:42,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:29:42,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-04 11:29:43,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-04 11:29:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076871662] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:43,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:43,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-03-04 11:29:43,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61273594] [2025-03-04 11:29:43,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:43,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-04 11:29:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:43,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-04 11:29:43,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2025-03-04 11:29:43,433 INFO L87 Difference]: Start difference. First operand 602 states and 908 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-03-04 11:29:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:43,936 INFO L93 Difference]: Finished difference Result 1439 states and 2478 transitions. [2025-03-04 11:29:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-03-04 11:29:43,936 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 107 [2025-03-04 11:29:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:43,943 INFO L225 Difference]: With dead ends: 1439 [2025-03-04 11:29:43,943 INFO L226 Difference]: Without dead ends: 1436 [2025-03-04 11:29:43,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=489, Invalid=3051, Unknown=0, NotChecked=0, Total=3540 [2025-03-04 11:29:43,945 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 49 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:43,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 738 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-03-04 11:29:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 899. [2025-03-04 11:29:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 719 states have (on average 1.094575799721836) internal successors, (787), 689 states have internal predecessors, (787), 96 states have call successors, (96), 20 states have call predecessors, (96), 80 states have return successors, (668), 189 states have call predecessors, (668), 95 states have call successors, (668) [2025-03-04 11:29:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1551 transitions. [2025-03-04 11:29:44,001 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1551 transitions. Word has length 107 [2025-03-04 11:29:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:44,002 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1551 transitions. [2025-03-04 11:29:44,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-03-04 11:29:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1551 transitions. [2025-03-04 11:29:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-04 11:29:44,002 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:44,003 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:44,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:44,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-04 11:29:44,207 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:44,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:44,208 INFO L85 PathProgramCache]: Analyzing trace with hash 868820135, now seen corresponding path program 1 times [2025-03-04 11:29:44,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753327061] [2025-03-04 11:29:44,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:44,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:44,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-04 11:29:44,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-04 11:29:44,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:44,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-04 11:29:44,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:44,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753327061] [2025-03-04 11:29:44,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753327061] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:44,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341440332] [2025-03-04 11:29:44,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:44,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:44,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:44,386 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:44,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 11:29:44,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-04 11:29:44,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-04 11:29:44,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:44,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:44,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 11:29:44,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 11:29:44,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-04 11:29:44,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341440332] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:44,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:44,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2025-03-04 11:29:44,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62156723] [2025-03-04 11:29:44,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:44,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-04 11:29:44,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:44,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-04 11:29:44,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2025-03-04 11:29:44,903 INFO L87 Difference]: Start difference. First operand 899 states and 1551 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-04 11:29:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:45,273 INFO L93 Difference]: Finished difference Result 1756 states and 3449 transitions. [2025-03-04 11:29:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-04 11:29:45,273 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 108 [2025-03-04 11:29:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:45,284 INFO L225 Difference]: With dead ends: 1756 [2025-03-04 11:29:45,284 INFO L226 Difference]: Without dead ends: 1754 [2025-03-04 11:29:45,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=1856, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 11:29:45,286 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:45,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 872 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2025-03-04 11:29:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1151. [2025-03-04 11:29:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 917 states have (on average 1.0708833151581243) internal successors, (982), 884 states have internal predecessors, (982), 121 states have call successors, (121), 20 states have call predecessors, (121), 109 states have return successors, (1337), 246 states have call predecessors, (1337), 120 states have call successors, (1337) [2025-03-04 11:29:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2440 transitions. [2025-03-04 11:29:45,395 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2440 transitions. Word has length 108 [2025-03-04 11:29:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:45,395 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 2440 transitions. [2025-03-04 11:29:45,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-04 11:29:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2440 transitions. [2025-03-04 11:29:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-04 11:29:45,396 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:45,397 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:45,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:45,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-04 11:29:45,599 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:45,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash 823188144, now seen corresponding path program 1 times [2025-03-04 11:29:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:45,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925214674] [2025-03-04 11:29:45,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:45,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:45,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-04 11:29:45,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-04 11:29:45,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:45,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-03-04 11:29:45,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925214674] [2025-03-04 11:29:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925214674] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593143285] [2025-03-04 11:29:45,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:45,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:45,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:45,745 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:45,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 11:29:45,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-04 11:29:45,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-04 11:29:45,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:45,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:45,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:29:45,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-03-04 11:29:45,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-03-04 11:29:46,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593143285] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:46,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:46,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2025-03-04 11:29:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316033260] [2025-03-04 11:29:46,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:46,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 11:29:46,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:46,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 11:29:46,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2025-03-04 11:29:46,074 INFO L87 Difference]: Start difference. First operand 1151 states and 2440 transitions. Second operand has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-04 11:29:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:46,332 INFO L93 Difference]: Finished difference Result 2296 states and 5035 transitions. [2025-03-04 11:29:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:29:46,333 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 142 [2025-03-04 11:29:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:46,344 INFO L225 Difference]: With dead ends: 2296 [2025-03-04 11:29:46,344 INFO L226 Difference]: Without dead ends: 1215 [2025-03-04 11:29:46,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 276 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:29:46,354 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 145 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:46,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 382 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:29:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2025-03-04 11:29:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1174. [2025-03-04 11:29:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 935 states have (on average 1.0695187165775402) internal successors, (1000), 902 states have internal predecessors, (1000), 123 states have call successors, (123), 20 states have call predecessors, (123), 112 states have return successors, (1353), 251 states have call predecessors, (1353), 122 states have call successors, (1353) [2025-03-04 11:29:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 2476 transitions. [2025-03-04 11:29:46,421 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 2476 transitions. Word has length 142 [2025-03-04 11:29:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:46,421 INFO L471 AbstractCegarLoop]: Abstraction has 1174 states and 2476 transitions. [2025-03-04 11:29:46,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-04 11:29:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 2476 transitions. [2025-03-04 11:29:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-04 11:29:46,423 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:46,423 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-04 11:29:46,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:46,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:46,624 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:46,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash -420725685, now seen corresponding path program 2 times [2025-03-04 11:29:46,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:46,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167857221] [2025-03-04 11:29:46,625 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:46,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:46,629 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-03-04 11:29:46,638 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-03-04 11:29:46,638 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:46,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 156 proven. 149 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2025-03-04 11:29:46,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:46,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167857221] [2025-03-04 11:29:46,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167857221] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778827251] [2025-03-04 11:29:46,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:46,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:46,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:46,862 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:46,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 11:29:46,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-03-04 11:29:46,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-03-04 11:29:46,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:46,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:46,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:29:46,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 141 proven. 143 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-03-04 11:29:46,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 141 proven. 144 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2025-03-04 11:29:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778827251] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:47,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 23 [2025-03-04 11:29:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55526651] [2025-03-04 11:29:47,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:47,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 11:29:47,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:47,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 11:29:47,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:29:47,301 INFO L87 Difference]: Start difference. First operand 1174 states and 2476 transitions. Second operand has 23 states, 22 states have (on average 5.136363636363637) internal successors, (113), 19 states have internal predecessors, (113), 13 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2025-03-04 11:29:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:47,620 INFO L93 Difference]: Finished difference Result 2288 states and 5719 transitions. [2025-03-04 11:29:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-04 11:29:47,620 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.136363636363637) internal successors, (113), 19 states have internal predecessors, (113), 13 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 179 [2025-03-04 11:29:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:47,627 INFO L225 Difference]: With dead ends: 2288 [2025-03-04 11:29:47,627 INFO L226 Difference]: Without dead ends: 1199 [2025-03-04 11:29:47,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 346 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:29:47,637 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 167 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:47,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 335 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2025-03-04 11:29:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1130. [2025-03-04 11:29:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 895 states have (on average 1.0625698324022346) internal successors, (951), 875 states have internal predecessors, (951), 120 states have call successors, (120), 20 states have call predecessors, (120), 111 states have return successors, (1198), 234 states have call predecessors, (1198), 119 states have call successors, (1198) [2025-03-04 11:29:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2269 transitions. [2025-03-04 11:29:47,694 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2269 transitions. Word has length 179 [2025-03-04 11:29:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:47,694 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 2269 transitions. [2025-03-04 11:29:47,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.136363636363637) internal successors, (113), 19 states have internal predecessors, (113), 13 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2025-03-04 11:29:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2269 transitions. [2025-03-04 11:29:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-04 11:29:47,696 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:47,696 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1] [2025-03-04 11:29:47,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 11:29:47,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:47,900 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:47,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash 689240016, now seen corresponding path program 3 times [2025-03-04 11:29:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:47,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910338746] [2025-03-04 11:29:47,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:29:47,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:47,905 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 161 statements into 7 equivalence classes. [2025-03-04 11:29:47,917 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 11:29:47,918 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-04 11:29:47,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-03-04 11:29:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:48,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910338746] [2025-03-04 11:29:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910338746] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:48,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717975442] [2025-03-04 11:29:48,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:29:48,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:48,312 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:48,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 11:29:48,348 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 161 statements into 7 equivalence classes. [2025-03-04 11:29:48,376 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 11:29:48,376 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-04 11:29:48,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:48,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 11:29:48,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2025-03-04 11:29:48,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2025-03-04 11:29:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717975442] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:49,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:49,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2025-03-04 11:29:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564508148] [2025-03-04 11:29:49,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:49,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 11:29:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:49,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 11:29:49,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 11:29:49,496 INFO L87 Difference]: Start difference. First operand 1130 states and 2269 transitions. Second operand has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-04 11:29:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:50,013 INFO L93 Difference]: Finished difference Result 2127 states and 4696 transitions. [2025-03-04 11:29:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-03-04 11:29:50,014 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 161 [2025-03-04 11:29:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:50,030 INFO L225 Difference]: With dead ends: 2127 [2025-03-04 11:29:50,030 INFO L226 Difference]: Without dead ends: 2122 [2025-03-04 11:29:50,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 293 SyntacticMatches, 13 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=591, Invalid=3699, Unknown=0, NotChecked=0, Total=4290 [2025-03-04 11:29:50,034 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:50,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 545 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2025-03-04 11:29:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1362. [2025-03-04 11:29:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1075 states have (on average 1.0474418604651163) internal successors, (1126), 1055 states have internal predecessors, (1126), 142 states have call successors, (142), 20 states have call predecessors, (142), 141 states have return successors, (1773), 286 states have call predecessors, (1773), 141 states have call successors, (1773) [2025-03-04 11:29:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 3041 transitions. [2025-03-04 11:29:50,165 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 3041 transitions. Word has length 161 [2025-03-04 11:29:50,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:50,165 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 3041 transitions. [2025-03-04 11:29:50,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-04 11:29:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 3041 transitions. [2025-03-04 11:29:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2025-03-04 11:29:50,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:50,169 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 12, 11, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 1, 1, 1, 1] [2025-03-04 11:29:50,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:50,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-03-04 11:29:50,374 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:50,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1532892621, now seen corresponding path program 2 times [2025-03-04 11:29:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:50,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346243402] [2025-03-04 11:29:50,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:50,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:50,382 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 269 statements into 2 equivalence classes. [2025-03-04 11:29:50,395 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 269 of 269 statements. [2025-03-04 11:29:50,395 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:50,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 162 proven. 179 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2025-03-04 11:29:50,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:50,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346243402] [2025-03-04 11:29:50,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346243402] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:50,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042051643] [2025-03-04 11:29:50,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:50,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:50,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:50,567 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:50,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 11:29:50,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 269 statements into 2 equivalence classes. [2025-03-04 11:29:50,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 269 of 269 statements. [2025-03-04 11:29:50,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:50,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:50,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:29:50,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 687 proven. 138 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2025-03-04 11:29:50,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 139 proven. 288 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2025-03-04 11:29:51,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042051643] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:51,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:51,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 20 [2025-03-04 11:29:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478675422] [2025-03-04 11:29:51,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:51,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 11:29:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:51,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 11:29:51,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-03-04 11:29:51,193 INFO L87 Difference]: Start difference. First operand 1362 states and 3041 transitions. Second operand has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2025-03-04 11:29:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:51,497 INFO L93 Difference]: Finished difference Result 2934 states and 6983 transitions. [2025-03-04 11:29:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 11:29:51,497 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) Word has length 269 [2025-03-04 11:29:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:51,509 INFO L225 Difference]: With dead ends: 2934 [2025-03-04 11:29:51,509 INFO L226 Difference]: Without dead ends: 1661 [2025-03-04 11:29:51,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 526 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2025-03-04 11:29:51,519 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 178 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:51,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 432 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2025-03-04 11:29:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1478. [2025-03-04 11:29:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1166 states have (on average 1.0463121783876501) internal successors, (1220), 1148 states have internal predecessors, (1220), 146 states have call successors, (146), 21 states have call predecessors, (146), 162 states have return successors, (1925), 308 states have call predecessors, (1925), 145 states have call successors, (1925) [2025-03-04 11:29:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 3291 transitions. [2025-03-04 11:29:51,647 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 3291 transitions. Word has length 269 [2025-03-04 11:29:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:51,647 INFO L471 AbstractCegarLoop]: Abstraction has 1478 states and 3291 transitions. [2025-03-04 11:29:51,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2025-03-04 11:29:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 3291 transitions. [2025-03-04 11:29:51,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-03-04 11:29:51,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:51,650 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 15, 14, 12, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 3, 2, 1, 1, 1, 1] [2025-03-04 11:29:51,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 11:29:51,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-04 11:29:51,851 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:51,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1995835284, now seen corresponding path program 1 times [2025-03-04 11:29:51,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:51,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728024348] [2025-03-04 11:29:51,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:51,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:51,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-04 11:29:51,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-04 11:29:51,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:51,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 261 proven. 252 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2025-03-04 11:29:52,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728024348] [2025-03-04 11:29:52,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728024348] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242325968] [2025-03-04 11:29:52,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:29:52,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:52,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:52,086 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:52,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 11:29:52,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-04 11:29:52,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-04 11:29:52,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:29:52,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:52,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:29:52,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 587 proven. 210 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2025-03-04 11:29:52,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 338 proven. 269 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2025-03-04 11:29:52,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242325968] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:52,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:52,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 22 [2025-03-04 11:29:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705118580] [2025-03-04 11:29:52,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:52,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 11:29:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:52,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 11:29:52,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:29:52,730 INFO L87 Difference]: Start difference. First operand 1478 states and 3291 transitions. Second operand has 22 states, 21 states have (on average 6.238095238095238) internal successors, (131), 18 states have internal predecessors, (131), 14 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) [2025-03-04 11:29:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:53,056 INFO L93 Difference]: Finished difference Result 3153 states and 7405 transitions. [2025-03-04 11:29:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-04 11:29:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.238095238095238) internal successors, (131), 18 states have internal predecessors, (131), 14 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) Word has length 301 [2025-03-04 11:29:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:53,069 INFO L225 Difference]: With dead ends: 3153 [2025-03-04 11:29:53,069 INFO L226 Difference]: Without dead ends: 1715 [2025-03-04 11:29:53,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 589 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2025-03-04 11:29:53,081 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 164 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:53,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 345 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:29:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2025-03-04 11:29:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1536. [2025-03-04 11:29:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1212 states have (on average 1.0453795379537953) internal successors, (1267), 1196 states have internal predecessors, (1267), 147 states have call successors, (147), 26 states have call predecessors, (147), 173 states have return successors, (1373), 313 states have call predecessors, (1373), 146 states have call successors, (1373) [2025-03-04 11:29:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2787 transitions. [2025-03-04 11:29:53,194 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2787 transitions. Word has length 301 [2025-03-04 11:29:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:53,195 INFO L471 AbstractCegarLoop]: Abstraction has 1536 states and 2787 transitions. [2025-03-04 11:29:53,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.238095238095238) internal successors, (131), 18 states have internal predecessors, (131), 14 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (21), 9 states have call predecessors, (21), 11 states have call successors, (21) [2025-03-04 11:29:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2787 transitions. [2025-03-04 11:29:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2025-03-04 11:29:53,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:53,197 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1] [2025-03-04 11:29:53,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 11:29:53,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:53,398 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:53,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash 531024577, now seen corresponding path program 3 times [2025-03-04 11:29:53,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:53,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368180907] [2025-03-04 11:29:53,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:29:53,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:53,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 253 statements into 9 equivalence classes. [2025-03-04 11:29:53,423 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 253 of 253 statements. [2025-03-04 11:29:53,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-04 11:29:53,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 149 proven. 248 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2025-03-04 11:29:54,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:54,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368180907] [2025-03-04 11:29:54,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368180907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:54,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601191871] [2025-03-04 11:29:54,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:29:54,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:54,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:54,041 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:54,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 11:29:54,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 253 statements into 9 equivalence classes. [2025-03-04 11:29:54,126 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 253 of 253 statements. [2025-03-04 11:29:54,126 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-04 11:29:54,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:54,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-04 11:29:54,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2025-03-04 11:29:54,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2025-03-04 11:29:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601191871] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:56,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 29] total 56 [2025-03-04 11:29:56,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084488923] [2025-03-04 11:29:56,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:56,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-04 11:29:56,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:56,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-04 11:29:56,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2797, Unknown=0, NotChecked=0, Total=3192 [2025-03-04 11:29:56,535 INFO L87 Difference]: Start difference. First operand 1536 states and 2787 transitions. Second operand has 57 states, 56 states have (on average 2.6785714285714284) internal successors, (150), 57 states have internal predecessors, (150), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2025-03-04 11:29:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:57,174 INFO L93 Difference]: Finished difference Result 2345 states and 4216 transitions. [2025-03-04 11:29:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-03-04 11:29:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.6785714285714284) internal successors, (150), 57 states have internal predecessors, (150), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) Word has length 253 [2025-03-04 11:29:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:57,187 INFO L225 Difference]: With dead ends: 2345 [2025-03-04 11:29:57,187 INFO L226 Difference]: Without dead ends: 2337 [2025-03-04 11:29:57,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 471 SyntacticMatches, 27 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3929 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=926, Invalid=5880, Unknown=0, NotChecked=0, Total=6806 [2025-03-04 11:29:57,191 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 59 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:57,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 624 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:29:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2025-03-04 11:29:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1548. [2025-03-04 11:29:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1226 states have (on average 1.0424143556280587) internal successors, (1278), 1203 states have internal predecessors, (1278), 145 states have call successors, (145), 26 states have call predecessors, (145), 173 states have return successors, (1291), 318 states have call predecessors, (1291), 144 states have call successors, (1291) [2025-03-04 11:29:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2714 transitions. [2025-03-04 11:29:57,312 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2714 transitions. Word has length 253 [2025-03-04 11:29:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:57,312 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 2714 transitions. [2025-03-04 11:29:57,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.6785714285714284) internal successors, (150), 57 states have internal predecessors, (150), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2025-03-04 11:29:57,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2714 transitions. [2025-03-04 11:29:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2025-03-04 11:29:57,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:57,315 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1] [2025-03-04 11:29:57,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-04 11:29:57,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:57,520 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:57,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:57,523 INFO L85 PathProgramCache]: Analyzing trace with hash 404089797, now seen corresponding path program 4 times [2025-03-04 11:29:57,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:57,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967720038] [2025-03-04 11:29:57,523 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:29:57,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:57,532 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 255 statements into 2 equivalence classes. [2025-03-04 11:29:57,540 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 154 of 255 statements. [2025-03-04 11:29:57,540 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:29:57,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 106 proven. 373 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2025-03-04 11:29:57,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:57,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967720038] [2025-03-04 11:29:57,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967720038] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:57,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408006807] [2025-03-04 11:29:57,694 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:29:57,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:57,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:57,699 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:57,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 11:29:57,792 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 255 statements into 2 equivalence classes. [2025-03-04 11:29:57,816 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 154 of 255 statements. [2025-03-04 11:29:57,816 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:29:57,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:57,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:29:57,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 616 proven. 179 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2025-03-04 11:29:57,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 110 proven. 375 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2025-03-04 11:29:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408006807] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:58,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:58,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 19 [2025-03-04 11:29:58,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894082601] [2025-03-04 11:29:58,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:58,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 11:29:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:58,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 11:29:58,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2025-03-04 11:29:58,344 INFO L87 Difference]: Start difference. First operand 1548 states and 2714 transitions. Second operand has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 16 states have internal predecessors, (130), 12 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2025-03-04 11:29:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:58,613 INFO L93 Difference]: Finished difference Result 3002 states and 5328 transitions. [2025-03-04 11:29:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:29:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 16 states have internal predecessors, (130), 12 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 255 [2025-03-04 11:29:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:58,620 INFO L225 Difference]: With dead ends: 3002 [2025-03-04 11:29:58,620 INFO L226 Difference]: Without dead ends: 1331 [2025-03-04 11:29:58,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 502 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2025-03-04 11:29:58,628 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 133 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:58,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 387 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:29:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2025-03-04 11:29:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1142. [2025-03-04 11:29:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 900 states have (on average 1.038888888888889) internal successors, (935), 892 states have internal predecessors, (935), 111 states have call successors, (111), 26 states have call predecessors, (111), 127 states have return successors, (723), 223 states have call predecessors, (723), 110 states have call successors, (723) [2025-03-04 11:29:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1769 transitions. [2025-03-04 11:29:58,689 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1769 transitions. Word has length 255 [2025-03-04 11:29:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:58,690 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1769 transitions. [2025-03-04 11:29:58,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 16 states have internal predecessors, (130), 12 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2025-03-04 11:29:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1769 transitions. [2025-03-04 11:29:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2025-03-04 11:29:58,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:58,695 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 22, 21, 17, 15, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 6, 4, 4, 1, 1, 1, 1] [2025-03-04 11:29:58,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-04 11:29:58,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-04 11:29:58,896 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:29:58,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1833253229, now seen corresponding path program 2 times [2025-03-04 11:29:58,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:58,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168783202] [2025-03-04 11:29:58,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:58,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 437 statements into 2 equivalence classes. [2025-03-04 11:29:58,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 437 of 437 statements. [2025-03-04 11:29:58,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:58,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 476 proven. 307 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2025-03-04 11:29:59,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168783202] [2025-03-04 11:29:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168783202] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679936082] [2025-03-04 11:29:59,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:29:59,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:59,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:59,205 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:59,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 11:29:59,283 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 437 statements into 2 equivalence classes. [2025-03-04 11:29:59,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 437 of 437 statements. [2025-03-04 11:29:59,346 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:29:59,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:59,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:29:59,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 1246 proven. 225 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2025-03-04 11:29:59,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 612 proven. 331 refuted. 0 times theorem prover too weak. 2368 trivial. 0 not checked. [2025-03-04 11:29:59,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679936082] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:59,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:59,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 22 [2025-03-04 11:29:59,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458960190] [2025-03-04 11:29:59,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:59,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 11:29:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:59,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 11:29:59,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2025-03-04 11:29:59,949 INFO L87 Difference]: Start difference. First operand 1142 states and 1769 transitions. Second operand has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 18 states have internal predecessors, (139), 14 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (22), 9 states have call predecessors, (22), 11 states have call successors, (22) [2025-03-04 11:30:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:00,284 INFO L93 Difference]: Finished difference Result 2507 states and 3805 transitions. [2025-03-04 11:30:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 11:30:00,285 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 18 states have internal predecessors, (139), 14 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (22), 9 states have call predecessors, (22), 11 states have call successors, (22) Word has length 437 [2025-03-04 11:30:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:00,291 INFO L225 Difference]: With dead ends: 2507 [2025-03-04 11:30:00,291 INFO L226 Difference]: Without dead ends: 1431 [2025-03-04 11:30:00,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 860 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=1046, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:30:00,296 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 121 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:00,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 450 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:30:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2025-03-04 11:30:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1282. [2025-03-04 11:30:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1007 states have (on average 1.0397219463753724) internal successors, (1047), 1007 states have internal predecessors, (1047), 127 states have call successors, (127), 35 states have call predecessors, (127), 144 states have return successors, (616), 239 states have call predecessors, (616), 126 states have call successors, (616) [2025-03-04 11:30:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1790 transitions. [2025-03-04 11:30:00,355 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1790 transitions. Word has length 437 [2025-03-04 11:30:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:00,355 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1790 transitions. [2025-03-04 11:30:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 18 states have internal predecessors, (139), 14 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (22), 9 states have call predecessors, (22), 11 states have call successors, (22) [2025-03-04 11:30:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1790 transitions. [2025-03-04 11:30:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-03-04 11:30:00,359 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:00,359 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 17, 17, 14, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 2, 1, 1, 1, 1] [2025-03-04 11:30:00,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-04 11:30:00,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-04 11:30:00,559 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:00,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash -239343722, now seen corresponding path program 3 times [2025-03-04 11:30:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986446878] [2025-03-04 11:30:00,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:30:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:00,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 377 statements into 16 equivalence classes. [2025-03-04 11:30:00,571 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 377 statements. [2025-03-04 11:30:00,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 11:30:00,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2448 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2025-03-04 11:30:00,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:00,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986446878] [2025-03-04 11:30:00,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986446878] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:00,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957985407] [2025-03-04 11:30:00,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:30:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:00,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:00,609 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:00,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-04 11:30:00,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 377 statements into 16 equivalence classes. [2025-03-04 11:30:00,690 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 377 statements. [2025-03-04 11:30:00,690 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 11:30:00,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:00,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 11:30:00,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2448 backedges. 233 proven. 4 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2025-03-04 11:30:00,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2448 backedges. 233 proven. 4 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2025-03-04 11:30:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957985407] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:01,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:01,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2025-03-04 11:30:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574189689] [2025-03-04 11:30:01,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:01,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 11:30:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:01,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 11:30:01,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-04 11:30:01,026 INFO L87 Difference]: Start difference. First operand 1282 states and 1790 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 11:30:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:01,186 INFO L93 Difference]: Finished difference Result 2510 states and 3692 transitions. [2025-03-04 11:30:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 11:30:01,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 377 [2025-03-04 11:30:01,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:01,192 INFO L225 Difference]: With dead ends: 2510 [2025-03-04 11:30:01,193 INFO L226 Difference]: Without dead ends: 1335 [2025-03-04 11:30:01,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 748 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2025-03-04 11:30:01,197 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 66 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:01,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 159 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:30:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2025-03-04 11:30:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1310. [2025-03-04 11:30:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1028 states have (on average 1.038910505836576) internal successors, (1068), 1028 states have internal predecessors, (1068), 132 states have call successors, (132), 37 states have call predecessors, (132), 146 states have return successors, (623), 244 states have call predecessors, (623), 131 states have call successors, (623) [2025-03-04 11:30:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1823 transitions. [2025-03-04 11:30:01,252 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1823 transitions. Word has length 377 [2025-03-04 11:30:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:01,253 INFO L471 AbstractCegarLoop]: Abstraction has 1310 states and 1823 transitions. [2025-03-04 11:30:01,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 11:30:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1823 transitions. [2025-03-04 11:30:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2025-03-04 11:30:01,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:01,257 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 19, 17, 16, 15, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 4, 3, 1, 1, 1, 1] [2025-03-04 11:30:01,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-04 11:30:01,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-04 11:30:01,458 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:01,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1231299081, now seen corresponding path program 4 times [2025-03-04 11:30:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577785432] [2025-03-04 11:30:01,458 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:30:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:01,471 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 395 statements into 2 equivalence classes. [2025-03-04 11:30:01,480 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 236 of 395 statements. [2025-03-04 11:30:01,480 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:30:01,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 288 proven. 727 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2025-03-04 11:30:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577785432] [2025-03-04 11:30:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577785432] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426423857] [2025-03-04 11:30:01,674 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:30:01,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:01,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:01,675 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:01,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-04 11:30:01,761 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 395 statements into 2 equivalence classes. [2025-03-04 11:30:01,791 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 236 of 395 statements. [2025-03-04 11:30:01,791 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:30:01,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:01,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:30:01,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 1563 proven. 181 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2025-03-04 11:30:01,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 373 proven. 469 refuted. 0 times theorem prover too weak. 1874 trivial. 0 not checked. [2025-03-04 11:30:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426423857] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:02,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 15] total 32 [2025-03-04 11:30:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759754227] [2025-03-04 11:30:02,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:02,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-04 11:30:02,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:02,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-04 11:30:02,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2025-03-04 11:30:02,698 INFO L87 Difference]: Start difference. First operand 1310 states and 1823 transitions. Second operand has 32 states, 30 states have (on average 6.133333333333334) internal successors, (184), 28 states have internal predecessors, (184), 21 states have call successors, (33), 6 states have call predecessors, (33), 11 states have return successors, (32), 14 states have call predecessors, (32), 17 states have call successors, (32) [2025-03-04 11:30:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:03,562 INFO L93 Difference]: Finished difference Result 2986 states and 4586 transitions. [2025-03-04 11:30:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-04 11:30:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 6.133333333333334) internal successors, (184), 28 states have internal predecessors, (184), 21 states have call successors, (33), 6 states have call predecessors, (33), 11 states have return successors, (32), 14 states have call predecessors, (32), 17 states have call successors, (32) Word has length 395 [2025-03-04 11:30:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:03,572 INFO L225 Difference]: With dead ends: 2986 [2025-03-04 11:30:03,573 INFO L226 Difference]: Without dead ends: 1566 [2025-03-04 11:30:03,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 775 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=481, Invalid=3425, Unknown=0, NotChecked=0, Total=3906 [2025-03-04 11:30:03,579 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 367 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:03,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 929 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 11:30:03,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2025-03-04 11:30:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1346. [2025-03-04 11:30:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1060 states have (on average 1.0415094339622641) internal successors, (1104), 1057 states have internal predecessors, (1104), 140 states have call successors, (140), 49 states have call predecessors, (140), 142 states have return successors, (579), 239 states have call predecessors, (579), 139 states have call successors, (579) [2025-03-04 11:30:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1823 transitions. [2025-03-04 11:30:03,690 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1823 transitions. Word has length 395 [2025-03-04 11:30:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:03,690 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1823 transitions. [2025-03-04 11:30:03,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 6.133333333333334) internal successors, (184), 28 states have internal predecessors, (184), 21 states have call successors, (33), 6 states have call predecessors, (33), 11 states have return successors, (32), 14 states have call predecessors, (32), 17 states have call successors, (32) [2025-03-04 11:30:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1823 transitions. [2025-03-04 11:30:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2025-03-04 11:30:03,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:03,694 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 19, 16, 14, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 4, 4, 1, 1, 1, 1] [2025-03-04 11:30:03,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-04 11:30:03,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-04 11:30:03,899 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:03,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -674682660, now seen corresponding path program 5 times [2025-03-04 11:30:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:03,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043280805] [2025-03-04 11:30:03,900 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:30:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:03,913 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 412 statements into 19 equivalence classes. [2025-03-04 11:30:03,935 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 332 of 412 statements. [2025-03-04 11:30:03,935 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-04 11:30:03,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2937 backedges. 453 proven. 99 refuted. 0 times theorem prover too weak. 2385 trivial. 0 not checked. [2025-03-04 11:30:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043280805] [2025-03-04 11:30:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043280805] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113513279] [2025-03-04 11:30:04,076 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:30:04,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:04,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:04,078 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:04,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-04 11:30:04,160 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 412 statements into 19 equivalence classes. [2025-03-04 11:30:04,208 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 332 of 412 statements. [2025-03-04 11:30:04,208 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-04 11:30:04,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:04,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 11:30:04,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2937 backedges. 1285 proven. 3 refuted. 0 times theorem prover too weak. 1649 trivial. 0 not checked. [2025-03-04 11:30:04,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2937 backedges. 453 proven. 99 refuted. 0 times theorem prover too weak. 2385 trivial. 0 not checked. [2025-03-04 11:30:04,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113513279] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:04,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2025-03-04 11:30:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935662553] [2025-03-04 11:30:04,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:04,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 11:30:04,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:04,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 11:30:04,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-03-04 11:30:04,657 INFO L87 Difference]: Start difference. First operand 1346 states and 1823 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-04 11:30:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:04,753 INFO L93 Difference]: Finished difference Result 2335 states and 3277 transitions. [2025-03-04 11:30:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 11:30:04,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 412 [2025-03-04 11:30:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:04,758 INFO L225 Difference]: With dead ends: 2335 [2025-03-04 11:30:04,758 INFO L226 Difference]: Without dead ends: 1077 [2025-03-04 11:30:04,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 817 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2025-03-04 11:30:04,761 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:04,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 195 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:30:04,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2025-03-04 11:30:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 965. [2025-03-04 11:30:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 759 states have (on average 1.051383399209486) internal successors, (798), 762 states have internal predecessors, (798), 105 states have call successors, (105), 47 states have call predecessors, (105), 97 states have return successors, (289), 155 states have call predecessors, (289), 104 states have call successors, (289) [2025-03-04 11:30:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1192 transitions. [2025-03-04 11:30:04,832 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1192 transitions. Word has length 412 [2025-03-04 11:30:04,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:04,832 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1192 transitions. [2025-03-04 11:30:04,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-04 11:30:04,832 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1192 transitions. [2025-03-04 11:30:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2025-03-04 11:30:04,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:04,835 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 19, 18, 16, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 7, 6, 6, 3, 1, 1, 1, 1] [2025-03-04 11:30:04,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-04 11:30:05,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-04 11:30:05,035 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:05,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash -560499940, now seen corresponding path program 6 times [2025-03-04 11:30:05,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:05,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617803434] [2025-03-04 11:30:05,036 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:30:05,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:05,046 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 416 statements into 19 equivalence classes. [2025-03-04 11:30:05,050 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 95 of 416 statements. [2025-03-04 11:30:05,050 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-04 11:30:05,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2999 backedges. 329 proven. 6 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2025-03-04 11:30:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:05,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617803434] [2025-03-04 11:30:05,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617803434] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:05,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589640185] [2025-03-04 11:30:05,080 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:30:05,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:05,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:05,082 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:05,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-04 11:30:05,164 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 416 statements into 19 equivalence classes. [2025-03-04 11:30:05,178 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 95 of 416 statements. [2025-03-04 11:30:05,178 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-04 11:30:05,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:05,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 11:30:05,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2999 backedges. 437 proven. 4 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2025-03-04 11:30:05,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2999 backedges. 437 proven. 4 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2025-03-04 11:30:05,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589640185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:05,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:05,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 16 [2025-03-04 11:30:05,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187270499] [2025-03-04 11:30:05,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:05,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 11:30:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:05,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 11:30:05,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:30:05,672 INFO L87 Difference]: Start difference. First operand 965 states and 1192 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-04 11:30:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:05,861 INFO L93 Difference]: Finished difference Result 1632 states and 2075 transitions. [2025-03-04 11:30:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 11:30:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 416 [2025-03-04 11:30:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:05,866 INFO L225 Difference]: With dead ends: 1632 [2025-03-04 11:30:05,866 INFO L226 Difference]: Without dead ends: 746 [2025-03-04 11:30:05,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 821 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:30:05,868 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 88 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:05,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 253 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:30:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2025-03-04 11:30:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 712. [2025-03-04 11:30:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.0373001776198933) internal successors, (584), 565 states have internal predecessors, (584), 82 states have call successors, (82), 46 states have call predecessors, (82), 65 states have return successors, (161), 100 states have call predecessors, (161), 81 states have call successors, (161) [2025-03-04 11:30:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 827 transitions. [2025-03-04 11:30:05,901 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 827 transitions. Word has length 416 [2025-03-04 11:30:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:05,901 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 827 transitions. [2025-03-04 11:30:05,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-04 11:30:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 827 transitions. [2025-03-04 11:30:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2025-03-04 11:30:05,903 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:05,903 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 17, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 5, 4, 4, 1, 1, 1, 1] [2025-03-04 11:30:05,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-04 11:30:06,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:06,103 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:06,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash 511041980, now seen corresponding path program 4 times [2025-03-04 11:30:06,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:06,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96617187] [2025-03-04 11:30:06,104 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:30:06,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:06,113 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 384 statements into 2 equivalence classes. [2025-03-04 11:30:06,121 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 229 of 384 statements. [2025-03-04 11:30:06,121 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:30:06,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2526 backedges. 357 proven. 228 refuted. 0 times theorem prover too weak. 1941 trivial. 0 not checked. [2025-03-04 11:30:06,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96617187] [2025-03-04 11:30:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96617187] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097256645] [2025-03-04 11:30:06,223 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:30:06,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:06,225 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:06,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-04 11:30:06,304 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 384 statements into 2 equivalence classes. [2025-03-04 11:30:06,332 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 229 of 384 statements. [2025-03-04 11:30:06,332 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 11:30:06,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:06,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:30:06,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2526 backedges. 440 proven. 259 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2025-03-04 11:30:06,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2526 backedges. 440 proven. 265 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2025-03-04 11:30:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097256645] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:07,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 18 [2025-03-04 11:30:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638917564] [2025-03-04 11:30:07,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:07,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 11:30:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:07,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 11:30:07,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2025-03-04 11:30:07,011 INFO L87 Difference]: Start difference. First operand 712 states and 827 transitions. Second operand has 18 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 11 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-04 11:30:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:07,199 INFO L93 Difference]: Finished difference Result 1292 states and 1502 transitions. [2025-03-04 11:30:07,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 11:30:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 11 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 384 [2025-03-04 11:30:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:07,204 INFO L225 Difference]: With dead ends: 1292 [2025-03-04 11:30:07,204 INFO L226 Difference]: Without dead ends: 749 [2025-03-04 11:30:07,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 756 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:30:07,206 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 71 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:07,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 267 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:30:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2025-03-04 11:30:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 703. [2025-03-04 11:30:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.0377697841726619) internal successors, (577), 558 states have internal predecessors, (577), 81 states have call successors, (81), 46 states have call predecessors, (81), 64 states have return successors, (153), 98 states have call predecessors, (153), 80 states have call successors, (153) [2025-03-04 11:30:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 811 transitions. [2025-03-04 11:30:07,237 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 811 transitions. Word has length 384 [2025-03-04 11:30:07,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:07,237 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 811 transitions. [2025-03-04 11:30:07,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 11 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-04 11:30:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 811 transitions. [2025-03-04 11:30:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-03-04 11:30:07,239 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:07,239 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 18, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 5, 4, 1, 1, 1, 1] [2025-03-04 11:30:07,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-03-04 11:30:07,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-03-04 11:30:07,439 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:07,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2137621062, now seen corresponding path program 5 times [2025-03-04 11:30:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81569454] [2025-03-04 11:30:07,440 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:30:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:07,448 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 423 statements into 19 equivalence classes. [2025-03-04 11:30:07,467 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 354 of 423 statements. [2025-03-04 11:30:07,467 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-04 11:30:07,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 450 proven. 57 refuted. 0 times theorem prover too weak. 2580 trivial. 0 not checked. [2025-03-04 11:30:07,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81569454] [2025-03-04 11:30:07,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81569454] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078374501] [2025-03-04 11:30:07,580 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:30:07,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:07,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:07,582 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:07,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-04 11:30:07,673 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 423 statements into 19 equivalence classes. [2025-03-04 11:30:07,737 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 354 of 423 statements. [2025-03-04 11:30:07,738 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-04 11:30:07,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:07,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 11:30:07,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 1105 proven. 6 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2025-03-04 11:30:07,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 516 proven. 68 refuted. 0 times theorem prover too weak. 2503 trivial. 0 not checked. [2025-03-04 11:30:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078374501] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:08,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:08,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-03-04 11:30:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740634936] [2025-03-04 11:30:08,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:08,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 11:30:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:08,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 11:30:08,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:30:08,255 INFO L87 Difference]: Start difference. First operand 703 states and 811 transitions. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (18), 5 states have call predecessors, (18), 7 states have call successors, (18) [2025-03-04 11:30:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:08,397 INFO L93 Difference]: Finished difference Result 1262 states and 1466 transitions. [2025-03-04 11:30:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 11:30:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (18), 5 states have call predecessors, (18), 7 states have call successors, (18) Word has length 423 [2025-03-04 11:30:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:08,401 INFO L225 Difference]: With dead ends: 1262 [2025-03-04 11:30:08,401 INFO L226 Difference]: Without dead ends: 637 [2025-03-04 11:30:08,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 838 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-03-04 11:30:08,403 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 51 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:08,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 188 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:30:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2025-03-04 11:30:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 633. [2025-03-04 11:30:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 502 states have (on average 1.0378486055776892) internal successors, (521), 503 states have internal predecessors, (521), 73 states have call successors, (73), 45 states have call predecessors, (73), 56 states have return successors, (109), 84 states have call predecessors, (109), 72 states have call successors, (109) [2025-03-04 11:30:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 703 transitions. [2025-03-04 11:30:08,430 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 703 transitions. Word has length 423 [2025-03-04 11:30:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:08,431 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 703 transitions. [2025-03-04 11:30:08,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (18), 5 states have call predecessors, (18), 7 states have call successors, (18) [2025-03-04 11:30:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 703 transitions. [2025-03-04 11:30:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-03-04 11:30:08,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:08,433 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 5, 3, 1, 1, 1, 1] [2025-03-04 11:30:08,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-04 11:30:08,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:08,634 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:08,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1139656069, now seen corresponding path program 6 times [2025-03-04 11:30:08,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:08,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305696372] [2025-03-04 11:30:08,635 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:30:08,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:08,642 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 424 statements into 19 equivalence classes. [2025-03-04 11:30:08,656 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 250 of 424 statements. [2025-03-04 11:30:08,656 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-03-04 11:30:08,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 762 proven. 87 refuted. 0 times theorem prover too weak. 2255 trivial. 0 not checked. [2025-03-04 11:30:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305696372] [2025-03-04 11:30:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305696372] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:08,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963499668] [2025-03-04 11:30:08,823 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:30:08,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:08,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:08,840 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:08,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-04 11:30:08,928 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 424 statements into 19 equivalence classes. [2025-03-04 11:30:08,962 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 250 of 424 statements. [2025-03-04 11:30:08,962 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-03-04 11:30:08,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:08,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:30:08,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 813 proven. 100 refuted. 0 times theorem prover too weak. 2191 trivial. 0 not checked. [2025-03-04 11:30:09,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 813 proven. 107 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2025-03-04 11:30:09,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963499668] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:09,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:09,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 23 [2025-03-04 11:30:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634481062] [2025-03-04 11:30:09,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:09,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 11:30:09,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:09,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 11:30:09,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:30:09,788 INFO L87 Difference]: Start difference. First operand 633 states and 703 transitions. Second operand has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 12 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) [2025-03-04 11:30:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:10,070 INFO L93 Difference]: Finished difference Result 1159 states and 1302 transitions. [2025-03-04 11:30:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 11:30:10,070 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 12 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) Word has length 424 [2025-03-04 11:30:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:10,074 INFO L225 Difference]: With dead ends: 1159 [2025-03-04 11:30:10,074 INFO L226 Difference]: Without dead ends: 680 [2025-03-04 11:30:10,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 835 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 11:30:10,075 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 124 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:10,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 364 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:30:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2025-03-04 11:30:10,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 647. [2025-03-04 11:30:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 513 states have (on average 1.037037037037037) internal successors, (532), 514 states have internal predecessors, (532), 74 states have call successors, (74), 45 states have call predecessors, (74), 58 states have return successors, (110), 87 states have call predecessors, (110), 73 states have call successors, (110) [2025-03-04 11:30:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 716 transitions. [2025-03-04 11:30:10,102 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 716 transitions. Word has length 424 [2025-03-04 11:30:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:10,102 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 716 transitions. [2025-03-04 11:30:10,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 12 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) [2025-03-04 11:30:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 716 transitions. [2025-03-04 11:30:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2025-03-04 11:30:10,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:10,104 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2025-03-04 11:30:10,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-03-04 11:30:10,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:10,304 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:10,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1954980808, now seen corresponding path program 7 times [2025-03-04 11:30:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941094629] [2025-03-04 11:30:10,305 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:30:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:10,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-03-04 11:30:10,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-03-04 11:30:10,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:30:10,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 440 proven. 701 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2025-03-04 11:30:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941094629] [2025-03-04 11:30:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941094629] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097639989] [2025-03-04 11:30:11,813 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:30:11,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:11,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:11,815 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:11,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-04 11:30:11,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 404 statements into 1 equivalence classes. [2025-03-04 11:30:11,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 404 of 404 statements. [2025-03-04 11:30:11,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:30:11,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:11,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-03-04 11:30:11,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2025-03-04 11:30:12,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 585 proven. 468 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked. [2025-03-04 11:30:17,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097639989] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:17,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:17,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 37] total 68 [2025-03-04 11:30:17,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537920540] [2025-03-04 11:30:17,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:17,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-03-04 11:30:17,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:17,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-03-04 11:30:17,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=4133, Unknown=0, NotChecked=0, Total=4692 [2025-03-04 11:30:17,634 INFO L87 Difference]: Start difference. First operand 647 states and 716 transitions. Second operand has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) [2025-03-04 11:30:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:17,916 INFO L93 Difference]: Finished difference Result 847 states and 962 transitions. [2025-03-04 11:30:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-04 11:30:17,917 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) Word has length 404 [2025-03-04 11:30:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:17,920 INFO L225 Difference]: With dead ends: 847 [2025-03-04 11:30:17,920 INFO L226 Difference]: Without dead ends: 824 [2025-03-04 11:30:17,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 769 SyntacticMatches, 51 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5802 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=757, Invalid=5405, Unknown=0, NotChecked=0, Total=6162 [2025-03-04 11:30:17,921 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:17,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 669 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:30:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2025-03-04 11:30:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 612. [2025-03-04 11:30:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 485 states have (on average 1.0350515463917527) internal successors, (502), 487 states have internal predecessors, (502), 72 states have call successors, (72), 45 states have call predecessors, (72), 54 states have return successors, (101), 79 states have call predecessors, (101), 71 states have call successors, (101) [2025-03-04 11:30:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 675 transitions. [2025-03-04 11:30:17,950 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 675 transitions. Word has length 404 [2025-03-04 11:30:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:17,950 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 675 transitions. [2025-03-04 11:30:17,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) [2025-03-04 11:30:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 675 transitions. [2025-03-04 11:30:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2025-03-04 11:30:17,953 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:17,954 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 26, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 10, 10, 7, 6, 1, 1, 1, 1] [2025-03-04 11:30:17,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-04 11:30:18,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-04 11:30:18,158 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:18,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1595302100, now seen corresponding path program 5 times [2025-03-04 11:30:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122914948] [2025-03-04 11:30:18,159 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:30:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:18,170 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 633 statements into 21 equivalence classes. [2025-03-04 11:30:18,203 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 528 of 633 statements. [2025-03-04 11:30:18,204 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-04 11:30:18,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 1086 proven. 1460 refuted. 0 times theorem prover too weak. 4536 trivial. 0 not checked. [2025-03-04 11:30:18,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122914948] [2025-03-04 11:30:18,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122914948] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12993244] [2025-03-04 11:30:18,706 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:30:18,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:18,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:18,708 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:18,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-04 11:30:18,885 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 633 statements into 21 equivalence classes. [2025-03-04 11:30:18,965 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 528 of 633 statements. [2025-03-04 11:30:18,965 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-04 11:30:18,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:18,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 11:30:18,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 1152 proven. 1471 refuted. 0 times theorem prover too weak. 4459 trivial. 0 not checked. [2025-03-04 11:30:19,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 1156 proven. 1513 refuted. 0 times theorem prover too weak. 4413 trivial. 0 not checked. [2025-03-04 11:30:20,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12993244] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:20,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:20,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 27] total 36 [2025-03-04 11:30:20,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788672372] [2025-03-04 11:30:20,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:20,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-04 11:30:20,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:20,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-04 11:30:20,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2025-03-04 11:30:20,973 INFO L87 Difference]: Start difference. First operand 612 states and 675 transitions. Second operand has 36 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 27 states have call successors, (36), 1 states have call predecessors, (36), 13 states have return successors, (42), 19 states have call predecessors, (42), 27 states have call successors, (42) [2025-03-04 11:30:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:21,644 INFO L93 Difference]: Finished difference Result 1244 states and 1390 transitions. [2025-03-04 11:30:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-04 11:30:21,645 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 27 states have call successors, (36), 1 states have call predecessors, (36), 13 states have return successors, (42), 19 states have call predecessors, (42), 27 states have call successors, (42) Word has length 633 [2025-03-04 11:30:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:21,648 INFO L225 Difference]: With dead ends: 1244 [2025-03-04 11:30:21,648 INFO L226 Difference]: Without dead ends: 609 [2025-03-04 11:30:21,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1322 GetRequests, 1246 SyntacticMatches, 13 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=634, Invalid=3526, Unknown=0, NotChecked=0, Total=4160 [2025-03-04 11:30:21,649 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 278 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:21,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 619 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 11:30:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2025-03-04 11:30:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 568. [2025-03-04 11:30:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 450 states have (on average 1.031111111111111) internal successors, (464), 452 states have internal predecessors, (464), 68 states have call successors, (68), 43 states have call predecessors, (68), 49 states have return successors, (90), 72 states have call predecessors, (90), 67 states have call successors, (90) [2025-03-04 11:30:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 622 transitions. [2025-03-04 11:30:21,673 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 622 transitions. Word has length 633 [2025-03-04 11:30:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:21,673 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 622 transitions. [2025-03-04 11:30:21,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 27 states have call successors, (36), 1 states have call predecessors, (36), 13 states have return successors, (42), 19 states have call predecessors, (42), 27 states have call successors, (42) [2025-03-04 11:30:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 622 transitions. [2025-03-04 11:30:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2025-03-04 11:30:21,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:21,676 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 30, 28, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 9, 6, 4, 1, 1, 1, 1] [2025-03-04 11:30:21,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-03-04 11:30:21,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-03-04 11:30:21,876 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:21,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:21,877 INFO L85 PathProgramCache]: Analyzing trace with hash -254775402, now seen corresponding path program 6 times [2025-03-04 11:30:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:21,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005611170] [2025-03-04 11:30:21,877 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:30:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:21,887 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 616 statements into 21 equivalence classes. [2025-03-04 11:30:21,907 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 390 of 616 statements. [2025-03-04 11:30:21,907 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-04 11:30:21,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6712 backedges. 724 proven. 103 refuted. 0 times theorem prover too weak. 5885 trivial. 0 not checked. [2025-03-04 11:30:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005611170] [2025-03-04 11:30:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005611170] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424195721] [2025-03-04 11:30:21,988 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 11:30:21,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:21,990 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:21,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-04 11:30:22,166 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 616 statements into 21 equivalence classes. [2025-03-04 11:30:22,215 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 390 of 616 statements. [2025-03-04 11:30:22,216 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-04 11:30:22,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:22,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 11:30:22,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6712 backedges. 2375 proven. 4 refuted. 0 times theorem prover too weak. 4333 trivial. 0 not checked. [2025-03-04 11:30:22,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6712 backedges. 724 proven. 103 refuted. 0 times theorem prover too weak. 5885 trivial. 0 not checked. [2025-03-04 11:30:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424195721] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:22,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2025-03-04 11:30:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260049079] [2025-03-04 11:30:22,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:22,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 11:30:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:22,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 11:30:22,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-04 11:30:22,868 INFO L87 Difference]: Start difference. First operand 568 states and 622 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-04 11:30:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:22,948 INFO L93 Difference]: Finished difference Result 1035 states and 1144 transitions. [2025-03-04 11:30:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 11:30:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 616 [2025-03-04 11:30:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:22,952 INFO L225 Difference]: With dead ends: 1035 [2025-03-04 11:30:22,952 INFO L226 Difference]: Without dead ends: 567 [2025-03-04 11:30:22,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1227 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2025-03-04 11:30:22,953 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 47 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:22,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 116 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:30:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-03-04 11:30:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 565. [2025-03-04 11:30:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 448 states have (on average 1.03125) internal successors, (462), 449 states have internal predecessors, (462), 68 states have call successors, (68), 44 states have call predecessors, (68), 48 states have return successors, (84), 71 states have call predecessors, (84), 67 states have call successors, (84) [2025-03-04 11:30:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 614 transitions. [2025-03-04 11:30:22,980 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 614 transitions. Word has length 616 [2025-03-04 11:30:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:22,981 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 614 transitions. [2025-03-04 11:30:22,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-04 11:30:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 614 transitions. [2025-03-04 11:30:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2025-03-04 11:30:22,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:22,984 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1] [2025-03-04 11:30:22,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-04 11:30:23,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-03-04 11:30:23,184 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:23,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1270817162, now seen corresponding path program 7 times [2025-03-04 11:30:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:23,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620153790] [2025-03-04 11:30:23,185 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:30:23,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:23,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-03-04 11:30:23,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-03-04 11:30:23,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:30:23,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 668 proven. 186 refuted. 0 times theorem prover too weak. 5805 trivial. 0 not checked. [2025-03-04 11:30:23,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620153790] [2025-03-04 11:30:23,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620153790] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564053307] [2025-03-04 11:30:23,470 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 11:30:23,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:23,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:23,472 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:23,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-04 11:30:23,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-03-04 11:30:23,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-03-04 11:30:23,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:30:23,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:23,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 11:30:23,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 892 proven. 193 refuted. 0 times theorem prover too weak. 5574 trivial. 0 not checked. [2025-03-04 11:30:23,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 896 proven. 196 refuted. 0 times theorem prover too weak. 5567 trivial. 0 not checked. [2025-03-04 11:30:24,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564053307] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:24,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:24,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 13] total 16 [2025-03-04 11:30:24,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287383618] [2025-03-04 11:30:24,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:24,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 11:30:24,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:24,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 11:30:24,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:30:24,546 INFO L87 Difference]: Start difference. First operand 565 states and 614 transitions. Second operand has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-04 11:30:24,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:24,702 INFO L93 Difference]: Finished difference Result 603 states and 656 transitions. [2025-03-04 11:30:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 11:30:24,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 614 [2025-03-04 11:30:24,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:24,704 INFO L225 Difference]: With dead ends: 603 [2025-03-04 11:30:24,705 INFO L226 Difference]: Without dead ends: 574 [2025-03-04 11:30:24,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1217 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-03-04 11:30:24,705 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 42 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:24,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 279 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:30:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-04 11:30:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 561. [2025-03-04 11:30:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 445 states have (on average 1.0292134831460673) internal successors, (458), 446 states have internal predecessors, (458), 67 states have call successors, (67), 44 states have call predecessors, (67), 48 states have return successors, (82), 70 states have call predecessors, (82), 66 states have call successors, (82) [2025-03-04 11:30:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 607 transitions. [2025-03-04 11:30:24,731 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 607 transitions. Word has length 614 [2025-03-04 11:30:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:24,731 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 607 transitions. [2025-03-04 11:30:24,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-04 11:30:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 607 transitions. [2025-03-04 11:30:24,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2025-03-04 11:30:24,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:24,734 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1] [2025-03-04 11:30:24,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-04 11:30:24,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:24,935 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:24,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1447734537, now seen corresponding path program 8 times [2025-03-04 11:30:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:24,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925215964] [2025-03-04 11:30:24,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:30:24,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:24,946 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 653 statements into 2 equivalence classes. [2025-03-04 11:30:24,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 653 of 653 statements. [2025-03-04 11:30:24,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:30:24,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1257 proven. 1900 refuted. 0 times theorem prover too weak. 4397 trivial. 0 not checked. [2025-03-04 11:30:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925215964] [2025-03-04 11:30:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925215964] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837813650] [2025-03-04 11:30:29,010 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:30:29,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:29,012 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:29,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-04 11:30:29,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 653 statements into 2 equivalence classes. [2025-03-04 11:30:29,251 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 653 of 653 statements. [2025-03-04 11:30:29,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:30:29,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:29,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 133 conjuncts are in the unsatisfiable core [2025-03-04 11:30:29,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2025-03-04 11:30:29,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1543 proven. 1316 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2025-03-04 11:30:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837813650] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:42,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:42,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 36, 46] total 79 [2025-03-04 11:30:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776125577] [2025-03-04 11:30:42,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:42,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2025-03-04 11:30:42,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:42,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2025-03-04 11:30:42,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=5582, Unknown=0, NotChecked=0, Total=6320 [2025-03-04 11:30:42,119 INFO L87 Difference]: Start difference. First operand 561 states and 607 transitions. Second operand has 80 states, 79 states have (on average 2.6202531645569622) internal successors, (207), 80 states have internal predecessors, (207), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (54), 54 states have call predecessors, (54), 20 states have call successors, (54) [2025-03-04 11:30:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:42,551 INFO L93 Difference]: Finished difference Result 773 states and 855 transitions. [2025-03-04 11:30:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-04 11:30:42,552 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.6202531645569622) internal successors, (207), 80 states have internal predecessors, (207), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (54), 54 states have call predecessors, (54), 20 states have call successors, (54) Word has length 653 [2025-03-04 11:30:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:42,555 INFO L225 Difference]: With dead ends: 773 [2025-03-04 11:30:42,555 INFO L226 Difference]: Without dead ends: 752 [2025-03-04 11:30:42,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1452 GetRequests, 1267 SyntacticMatches, 92 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10360 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1072, Invalid=7858, Unknown=0, NotChecked=0, Total=8930 [2025-03-04 11:30:42,565 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:42,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 628 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:30:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2025-03-04 11:30:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 720. [2025-03-04 11:30:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 569 states have (on average 1.0228471001757469) internal successors, (582), 570 states have internal predecessors, (582), 83 states have call successors, (83), 44 states have call predecessors, (83), 67 states have return successors, (130), 105 states have call predecessors, (130), 82 states have call successors, (130) [2025-03-04 11:30:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 795 transitions. [2025-03-04 11:30:42,602 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 795 transitions. Word has length 653 [2025-03-04 11:30:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:42,602 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 795 transitions. [2025-03-04 11:30:42,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.6202531645569622) internal successors, (207), 80 states have internal predecessors, (207), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (54), 54 states have call predecessors, (54), 20 states have call successors, (54) [2025-03-04 11:30:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 795 transitions. [2025-03-04 11:30:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2025-03-04 11:30:42,606 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:30:42,606 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 39, 38, 33, 32, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 14, 12, 7, 7, 1, 1, 1, 1] [2025-03-04 11:30:42,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-04 11:30:42,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-03-04 11:30:42,807 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-04 11:30:42,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:30:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash -592786079, now seen corresponding path program 9 times [2025-03-04 11:30:42,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:30:42,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581760015] [2025-03-04 11:30:42,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:30:42,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:30:42,821 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 772 statements into 32 equivalence classes. [2025-03-04 11:30:42,834 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 232 of 772 statements. [2025-03-04 11:30:42,834 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-04 11:30:42,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10642 backedges. 1302 proven. 195 refuted. 0 times theorem prover too weak. 9145 trivial. 0 not checked. [2025-03-04 11:30:42,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:30:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581760015] [2025-03-04 11:30:42,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581760015] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:30:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343693175] [2025-03-04 11:30:42,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:30:42,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:30:42,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:30:42,927 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:30:42,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-04 11:30:43,217 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 772 statements into 32 equivalence classes. [2025-03-04 11:30:43,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 232 of 772 statements. [2025-03-04 11:30:43,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-04 11:30:43,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:30:43,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 11:30:43,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:30:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10642 backedges. 4057 proven. 7 refuted. 0 times theorem prover too weak. 6578 trivial. 0 not checked. [2025-03-04 11:30:43,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:30:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10642 backedges. 1154 proven. 200 refuted. 0 times theorem prover too weak. 9288 trivial. 0 not checked. [2025-03-04 11:30:44,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343693175] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:30:44,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:30:44,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2025-03-04 11:30:44,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530316999] [2025-03-04 11:30:44,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:30:44,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 11:30:44,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:30:44,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 11:30:44,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2025-03-04 11:30:44,181 INFO L87 Difference]: Start difference. First operand 720 states and 795 transitions. Second operand has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 8 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (23), 11 states have call predecessors, (23), 8 states have call successors, (23) [2025-03-04 11:30:44,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:30:44,418 INFO L93 Difference]: Finished difference Result 1185 states and 1319 transitions. [2025-03-04 11:30:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 11:30:44,418 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 8 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (23), 11 states have call predecessors, (23), 8 states have call successors, (23) Word has length 772 [2025-03-04 11:30:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:30:44,420 INFO L225 Difference]: With dead ends: 1185 [2025-03-04 11:30:44,420 INFO L226 Difference]: Without dead ends: 0 [2025-03-04 11:30:44,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1567 GetRequests, 1533 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2025-03-04 11:30:44,422 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 122 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:30:44,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 260 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:30:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-04 11:30:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-04 11:30:44,423 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) [2025-03-04 11:30:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-04 11:30:44,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 772 [2025-03-04 11:30:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:30:44,423 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-04 11:30:44,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 8 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (23), 11 states have call predecessors, (23), 8 states have call successors, (23) [2025-03-04 11:30:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-04 11:30:44,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-04 11:30:44,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-03-04 11:30:44,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-03-04 11:30:44,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-03-04 11:30:44,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-03-04 11:30:44,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-03-04 11:30:44,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-03-04 11:30:44,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2025-03-04 11:30:44,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2025-03-04 11:30:44,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-03-04 11:30:44,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-03-04 11:30:44,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-03-04 11:30:44,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-03-04 11:30:44,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-04 11:30:44,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-03-04 11:30:44,631 INFO L422 BasicCegarLoop]: Path program histogram: [9, 7, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:30:44,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.