./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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_6-1.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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 02:41:40,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 02:41:40,618 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 02:41:40,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 02:41:40,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 02:41:40,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 02:41:40,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 02:41:40,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 02:41:40,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 02:41:40,636 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 02:41:40,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 02:41:40,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 02:41:40,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 02:41:40,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 02:41:40,637 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 02:41:40,639 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 02:41:40,639 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 02:41:40,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 02:41:40,639 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 02:41:40,639 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 02:41:40,640 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:41:40,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 02:41:40,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 02:41:40,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 02:41:40,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 02:41:40,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 02:41:40,641 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 -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2025-03-09 02:41:40,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 02:41:40,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 02:41:40,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 02:41:40,879 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 02:41:40,879 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 02:41:40,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2025-03-09 02:41:41,998 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf9dbe3e/69b53605c5de42338e2e6a81ada914cd/FLAGe25eb4182 [2025-03-09 02:41:42,253 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 02:41:42,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2025-03-09 02:41:42,260 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf9dbe3e/69b53605c5de42338e2e6a81ada914cd/FLAGe25eb4182 [2025-03-09 02:41:42,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf9dbe3e/69b53605c5de42338e2e6a81ada914cd [2025-03-09 02:41:42,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 02:41:42,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 02:41:42,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 02:41:42,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 02:41:42,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 02:41:42,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46be36ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42, skipping insertion in model container [2025-03-09 02:41:42,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,296 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 02:41:42,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:41:42,405 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 02:41:42,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:41:42,425 INFO L204 MainTranslator]: Completed translation [2025-03-09 02:41:42,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42 WrapperNode [2025-03-09 02:41:42,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 02:41:42,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 02:41:42,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 02:41:42,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 02:41:42,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,445 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-03-09 02:41:42,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 02:41:42,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 02:41:42,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 02:41:42,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 02:41:42,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,465 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]. [2025-03-09 02:41:42,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 02:41:42,474 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 02:41:42,474 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 02:41:42,474 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 02:41:42,476 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (1/1) ... [2025-03-09 02:41:42,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:41:42,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:42,502 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) [2025-03-09 02:41:42,508 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 [2025-03-09 02:41:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 02:41:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 02:41:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-03-09 02:41:42,522 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-03-09 02:41:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-03-09 02:41:42,522 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-03-09 02:41:42,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 02:41:42,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 02:41:42,566 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 02:41:42,568 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 02:41:42,667 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-03-09 02:41:42,691 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-03-09 02:41:42,700 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-09 02:41:42,700 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 02:41:42,706 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 02:41:42,706 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 02:41:42,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:41:42 BoogieIcfgContainer [2025-03-09 02:41:42,706 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 02:41:42,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 02:41:42,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 02:41:42,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 02:41:42,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 02:41:42" (1/3) ... [2025-03-09 02:41:42,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cfce96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:41:42, skipping insertion in model container [2025-03-09 02:41:42,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:42" (2/3) ... [2025-03-09 02:41:42,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cfce96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:41:42, skipping insertion in model container [2025-03-09 02:41:42,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:41:42" (3/3) ... [2025-03-09 02:41:42,714 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2025-03-09 02:41:42,725 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 02:41:42,727 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_6-1.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-03-09 02:41:42,766 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 02:41:42,775 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;@6bf45761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 02:41:42,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-09 02:41:42,778 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) [2025-03-09 02:41:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 02:41:42,781 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:42,782 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:42,783 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:42,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1954105288, now seen corresponding path program 1 times [2025-03-09 02:41:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:42,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329642783] [2025-03-09 02:41:42,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:42,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 02:41:42,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 02:41:42,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:42,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:42,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329642783] [2025-03-09 02:41:42,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329642783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:42,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:42,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:41:42,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473963900] [2025-03-09 02:41:42,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:42,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 02:41:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:42,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 02:41:42,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:41:42,942 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) [2025-03-09 02:41:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:42,987 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2025-03-09 02:41:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 02:41:42,989 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 [2025-03-09 02:41:42,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:42,994 INFO L225 Difference]: With dead ends: 59 [2025-03-09 02:41:42,994 INFO L226 Difference]: Without dead ends: 45 [2025-03-09 02:41:42,996 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 [2025-03-09 02:41:42,999 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 [2025-03-09 02:41:43,001 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] [2025-03-09 02:41:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-09 02:41:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-03-09 02:41:43,029 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) [2025-03-09 02:41:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-03-09 02:41:43,034 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2025-03-09 02:41:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,035 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-03-09 02:41:43,035 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) [2025-03-09 02:41:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-03-09 02:41:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 02:41:43,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,036 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:43,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 02:41:43,036 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash -447721764, now seen corresponding path program 1 times [2025-03-09 02:41:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68698452] [2025-03-09 02:41:43,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 02:41:43,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 02:41:43,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:43,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68698452] [2025-03-09 02:41:43,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68698452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:43,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442672999] [2025-03-09 02:41:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:43,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:43,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:43,101 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) [2025-03-09 02:41:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,161 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2025-03-09 02:41:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:43,161 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 [2025-03-09 02:41:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,163 INFO L225 Difference]: With dead ends: 64 [2025-03-09 02:41:43,163 INFO L226 Difference]: Without dead ends: 58 [2025-03-09 02:41:43,163 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 [2025-03-09 02:41:43,164 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 [2025-03-09 02:41:43,164 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] [2025-03-09 02:41:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-09 02:41:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2025-03-09 02:41:43,171 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) [2025-03-09 02:41:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2025-03-09 02:41:43,173 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2025-03-09 02:41:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,173 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2025-03-09 02:41:43,173 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) [2025-03-09 02:41:43,173 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2025-03-09 02:41:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 02:41:43,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,174 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:43,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 02:41:43,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2145956475, now seen corresponding path program 1 times [2025-03-09 02:41:43,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617155727] [2025-03-09 02:41:43,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 02:41:43,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 02:41:43,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:43,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617155727] [2025-03-09 02:41:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617155727] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:43,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:41:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727558265] [2025-03-09 02:41:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 02:41:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 02:41:43,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:41:43,220 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) [2025-03-09 02:41:43,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,252 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2025-03-09 02:41:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 02:41:43,255 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 [2025-03-09 02:41:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,256 INFO L225 Difference]: With dead ends: 58 [2025-03-09 02:41:43,256 INFO L226 Difference]: Without dead ends: 56 [2025-03-09 02:41:43,256 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 [2025-03-09 02:41:43,257 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 [2025-03-09 02:41:43,257 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] [2025-03-09 02:41:43,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-09 02:41:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2025-03-09 02:41:43,265 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) [2025-03-09 02:41:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-03-09 02:41:43,267 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2025-03-09 02:41:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,267 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-03-09 02:41:43,268 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) [2025-03-09 02:41:43,268 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-03-09 02:41:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 02:41:43,268 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,268 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:43,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 02:41:43,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2100141288, now seen corresponding path program 1 times [2025-03-09 02:41:43,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654257241] [2025-03-09 02:41:43,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 02:41:43,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 02:41:43,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654257241] [2025-03-09 02:41:43,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654257241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:43,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 02:41:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359073875] [2025-03-09 02:41:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:41:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:41:43,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:41:43,362 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) [2025-03-09 02:41:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,490 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2025-03-09 02:41:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:41:43,491 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 [2025-03-09 02:41:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,491 INFO L225 Difference]: With dead ends: 58 [2025-03-09 02:41:43,491 INFO L226 Difference]: Without dead ends: 54 [2025-03-09 02:41:43,492 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 [2025-03-09 02:41:43,492 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 [2025-03-09 02:41:43,492 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] [2025-03-09 02:41:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-09 02:41:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2025-03-09 02:41:43,503 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) [2025-03-09 02:41:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-03-09 02:41:43,506 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2025-03-09 02:41:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,506 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-03-09 02:41:43,507 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) [2025-03-09 02:41:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-03-09 02:41:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-09 02:41:43,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,507 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] [2025-03-09 02:41:43,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 02:41:43,507 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1831817774, now seen corresponding path program 1 times [2025-03-09 02:41:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705809135] [2025-03-09 02:41:43,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 02:41:43,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 02:41:43,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:41:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705809135] [2025-03-09 02:41:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705809135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855904327] [2025-03-09 02:41:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:43,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:43,639 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) [2025-03-09 02:41:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,666 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2025-03-09 02:41:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:43,666 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 [2025-03-09 02:41:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,667 INFO L225 Difference]: With dead ends: 74 [2025-03-09 02:41:43,667 INFO L226 Difference]: Without dead ends: 69 [2025-03-09 02:41:43,668 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 [2025-03-09 02:41:43,668 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 [2025-03-09 02:41:43,668 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] [2025-03-09 02:41:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-09 02:41:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-03-09 02:41:43,677 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) [2025-03-09 02:41:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2025-03-09 02:41:43,679 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2025-03-09 02:41:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,680 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2025-03-09 02:41:43,680 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) [2025-03-09 02:41:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2025-03-09 02:41:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-09 02:41:43,681 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,681 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] [2025-03-09 02:41:43,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 02:41:43,681 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash -631666365, now seen corresponding path program 1 times [2025-03-09 02:41:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522029691] [2025-03-09 02:41:43,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:41:43,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:41:43,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 02:41:43,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522029691] [2025-03-09 02:41:43,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522029691] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701526766] [2025-03-09 02:41:43,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:43,770 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) [2025-03-09 02:41:43,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 02:41:43,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:41:43,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:41:43,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 02:41:43,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:43,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:41:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701526766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:41:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-03-09 02:41:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819517799] [2025-03-09 02:41:43,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:41:43,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:41:43,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-09 02:41:43,894 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) [2025-03-09 02:41:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,978 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2025-03-09 02:41:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:41:43,979 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 [2025-03-09 02:41:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,980 INFO L225 Difference]: With dead ends: 117 [2025-03-09 02:41:43,980 INFO L226 Difference]: Without dead ends: 63 [2025-03-09 02:41:43,980 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 [2025-03-09 02:41:43,982 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 [2025-03-09 02:41:43,983 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] [2025-03-09 02:41:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-03-09 02:41:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2025-03-09 02:41:43,991 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) [2025-03-09 02:41:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2025-03-09 02:41:43,992 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 24 [2025-03-09 02:41:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,992 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2025-03-09 02:41:43,992 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) [2025-03-09 02:41:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2025-03-09 02:41:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-09 02:41:43,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,994 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] [2025-03-09 02:41:44,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 02:41:44,196 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 [2025-03-09 02:41:44,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:44,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2003454357, now seen corresponding path program 1 times [2025-03-09 02:41:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:44,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338409720] [2025-03-09 02:41:44,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:44,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 02:41:44,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 02:41:44,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:44,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-09 02:41:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:44,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338409720] [2025-03-09 02:41:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338409720] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:44,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:44,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813171095] [2025-03-09 02:41:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:44,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:44,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:44,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:44,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:44,259 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) [2025-03-09 02:41:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:44,289 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2025-03-09 02:41:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:44,289 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 [2025-03-09 02:41:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:44,290 INFO L225 Difference]: With dead ends: 75 [2025-03-09 02:41:44,290 INFO L226 Difference]: Without dead ends: 73 [2025-03-09 02:41:44,290 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 [2025-03-09 02:41:44,290 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 [2025-03-09 02:41:44,291 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] [2025-03-09 02:41:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-09 02:41:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2025-03-09 02:41:44,296 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) [2025-03-09 02:41:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2025-03-09 02:41:44,298 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 29 [2025-03-09 02:41:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:44,298 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2025-03-09 02:41:44,298 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) [2025-03-09 02:41:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2025-03-09 02:41:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-09 02:41:44,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:44,300 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] [2025-03-09 02:41:44,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 02:41:44,301 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:44,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1424432597, now seen corresponding path program 1 times [2025-03-09 02:41:44,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:44,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807040223] [2025-03-09 02:41:44,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:44,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:44,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:41:44,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:41:44,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:44,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:41:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807040223] [2025-03-09 02:41:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807040223] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008032095] [2025-03-09 02:41:44,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:44,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:44,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:44,371 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) [2025-03-09 02:41:44,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 02:41:44,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:41:44,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:41:44,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:44,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:44,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:41:44,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:44,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 02:41:44,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008032095] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:44,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:44,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-09 02:41:44,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43598942] [2025-03-09 02:41:44,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:44,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 02:41:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:44,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 02:41:44,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-03-09 02:41:44,635 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) [2025-03-09 02:41:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:44,986 INFO L93 Difference]: Finished difference Result 192 states and 253 transitions. [2025-03-09 02:41:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 02:41:44,986 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 [2025-03-09 02:41:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:44,987 INFO L225 Difference]: With dead ends: 192 [2025-03-09 02:41:44,987 INFO L226 Difference]: Without dead ends: 131 [2025-03-09 02:41:44,988 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 [2025-03-09 02:41:44,988 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 [2025-03-09 02:41:44,989 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] [2025-03-09 02:41:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-09 02:41:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2025-03-09 02:41:44,998 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) [2025-03-09 02:41:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2025-03-09 02:41:44,999 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 30 [2025-03-09 02:41:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:44,999 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2025-03-09 02:41:44,999 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) [2025-03-09 02:41:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2025-03-09 02:41:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-09 02:41:45,000 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:45,000 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] [2025-03-09 02:41:45,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:45,201 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 [2025-03-09 02:41:45,201 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:45,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2119279126, now seen corresponding path program 2 times [2025-03-09 02:41:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:45,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126654706] [2025-03-09 02:41:45,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:45,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 02:41:45,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 02:41:45,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:45,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:41:45,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:45,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126654706] [2025-03-09 02:41:45,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126654706] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:45,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152562970] [2025-03-09 02:41:45,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:45,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:45,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:45,271 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) [2025-03-09 02:41:45,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 02:41:45,293 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 02:41:45,302 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 02:41:45,302 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:45,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:45,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 02:41:45,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:41:45,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:41:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152562970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:45,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:41:45,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-03-09 02:41:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146060211] [2025-03-09 02:41:45,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:45,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:45,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:45,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:45,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:41:45,336 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) [2025-03-09 02:41:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:45,360 INFO L93 Difference]: Finished difference Result 124 states and 157 transitions. [2025-03-09 02:41:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:45,361 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 [2025-03-09 02:41:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:45,362 INFO L225 Difference]: With dead ends: 124 [2025-03-09 02:41:45,362 INFO L226 Difference]: Without dead ends: 123 [2025-03-09 02:41:45,362 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 [2025-03-09 02:41:45,363 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 [2025-03-09 02:41:45,363 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] [2025-03-09 02:41:45,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-09 02:41:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2025-03-09 02:41:45,376 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) [2025-03-09 02:41:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2025-03-09 02:41:45,377 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 42 [2025-03-09 02:41:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:45,377 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2025-03-09 02:41:45,378 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) [2025-03-09 02:41:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2025-03-09 02:41:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-09 02:41:45,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:45,378 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] [2025-03-09 02:41:45,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:45,579 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 [2025-03-09 02:41:45,579 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:45,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1273143481, now seen corresponding path program 1 times [2025-03-09 02:41:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660907246] [2025-03-09 02:41:45,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:45,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 02:41:45,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 02:41:45,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:45,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:41:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:45,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660907246] [2025-03-09 02:41:45,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660907246] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:45,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857215656] [2025-03-09 02:41:45,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:45,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:45,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:45,652 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) [2025-03-09 02:41:45,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 02:41:45,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 02:41:45,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 02:41:45,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:45,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:45,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:41:45,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:45,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 02:41:45,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857215656] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:45,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2025-03-09 02:41:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530207738] [2025-03-09 02:41:45,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:45,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 02:41:45,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:45,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 02:41:45,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2025-03-09 02:41:45,953 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-09 02:41:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,279 INFO L93 Difference]: Finished difference Result 287 states and 363 transitions. [2025-03-09 02:41:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 02:41:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2025-03-09 02:41:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,281 INFO L225 Difference]: With dead ends: 287 [2025-03-09 02:41:46,281 INFO L226 Difference]: Without dead ends: 183 [2025-03-09 02:41:46,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:41:46,282 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 113 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 650 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-09 02:41:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 162. [2025-03-09 02:41:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 127 states have (on average 1.1496062992125984) internal successors, (146), 127 states have internal predecessors, (146), 21 states have call successors, (21), 8 states have call predecessors, (21), 10 states have return successors, (40), 26 states have call predecessors, (40), 20 states have call successors, (40) [2025-03-09 02:41:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 207 transitions. [2025-03-09 02:41:46,303 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 207 transitions. Word has length 43 [2025-03-09 02:41:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,304 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 207 transitions. [2025-03-09 02:41:46,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-09 02:41:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 207 transitions. [2025-03-09 02:41:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-09 02:41:46,306 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,306 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:46,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 02:41:46,507 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 [2025-03-09 02:41:46,508 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:46,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1523564695, now seen corresponding path program 1 times [2025-03-09 02:41:46,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777123152] [2025-03-09 02:41:46,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 02:41:46,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 02:41:46,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-09 02:41:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:46,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777123152] [2025-03-09 02:41:46,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777123152] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:46,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482814365] [2025-03-09 02:41:46,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:46,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:46,578 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) [2025-03-09 02:41:46,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 02:41:46,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 02:41:46,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 02:41:46,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 02:41:46,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-09 02:41:46,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-09 02:41:46,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482814365] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:46,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:46,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2025-03-09 02:41:46,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818259133] [2025-03-09 02:41:46,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:46,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 02:41:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:46,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 02:41:46,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-03-09 02:41:46,681 INFO L87 Difference]: Start difference. First operand 162 states and 207 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) [2025-03-09 02:41:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,747 INFO L93 Difference]: Finished difference Result 181 states and 237 transitions. [2025-03-09 02:41:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 02:41:46,747 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 48 [2025-03-09 02:41:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,749 INFO L225 Difference]: With dead ends: 181 [2025-03-09 02:41:46,749 INFO L226 Difference]: Without dead ends: 179 [2025-03-09 02:41:46,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-03-09 02:41:46,751 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 300 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-09 02:41:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 166. [2025-03-09 02:41:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 130 states have (on average 1.146153846153846) internal successors, (149), 130 states have internal predecessors, (149), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (45), 27 states have call predecessors, (45), 20 states have call successors, (45) [2025-03-09 02:41:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2025-03-09 02:41:46,765 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 48 [2025-03-09 02:41:46,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,765 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2025-03-09 02:41:46,765 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) [2025-03-09 02:41:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2025-03-09 02:41:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-09 02:41:46,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,766 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:46,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:46,970 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 [2025-03-09 02:41:46,970 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:46,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1797262843, now seen corresponding path program 1 times [2025-03-09 02:41:46,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314640957] [2025-03-09 02:41:46,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-09 02:41:46,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-09 02:41:46,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-09 02:41:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314640957] [2025-03-09 02:41:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314640957] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647601970] [2025-03-09 02:41:47,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:47,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:47,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:47,022 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) [2025-03-09 02:41:47,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 02:41:47,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-09 02:41:47,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-09 02:41:47,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:47,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:47,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 02:41:47,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:47,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 02:41:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647601970] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:47,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:47,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2025-03-09 02:41:47,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739900188] [2025-03-09 02:41:47,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:47,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 02:41:47,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:47,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 02:41:47,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2025-03-09 02:41:47,354 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-09 02:41:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:47,691 INFO L93 Difference]: Finished difference Result 358 states and 465 transitions. [2025-03-09 02:41:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 02:41:47,692 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 49 [2025-03-09 02:41:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:47,694 INFO L225 Difference]: With dead ends: 358 [2025-03-09 02:41:47,694 INFO L226 Difference]: Without dead ends: 213 [2025-03-09 02:41:47,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2025-03-09 02:41:47,695 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 144 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:47,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 716 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:41:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-03-09 02:41:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 194. [2025-03-09 02:41:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 151 states have internal predecessors, (174), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 33 states have call predecessors, (55), 24 states have call successors, (55) [2025-03-09 02:41:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 254 transitions. [2025-03-09 02:41:47,705 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 254 transitions. Word has length 49 [2025-03-09 02:41:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:47,705 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 254 transitions. [2025-03-09 02:41:47,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-09 02:41:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 254 transitions. [2025-03-09 02:41:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-09 02:41:47,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:47,706 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:47,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:47,906 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 [2025-03-09 02:41:47,906 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:47,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash 379226588, now seen corresponding path program 1 times [2025-03-09 02:41:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:47,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016131970] [2025-03-09 02:41:47,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:47,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-09 02:41:47,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-09 02:41:47,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:47,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-09 02:41:47,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:47,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016131970] [2025-03-09 02:41:47,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016131970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:47,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:47,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:47,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238832811] [2025-03-09 02:41:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:47,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:47,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:47,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:47,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:47,955 INFO L87 Difference]: Start difference. First operand 194 states and 254 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) [2025-03-09 02:41:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:47,979 INFO L93 Difference]: Finished difference Result 208 states and 271 transitions. [2025-03-09 02:41:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:47,980 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 50 [2025-03-09 02:41:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:47,981 INFO L225 Difference]: With dead ends: 208 [2025-03-09 02:41:47,982 INFO L226 Difference]: Without dead ends: 207 [2025-03-09 02:41:47,982 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 [2025-03-09 02:41:47,983 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 [2025-03-09 02:41:47,983 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] [2025-03-09 02:41:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-03-09 02:41:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 190. [2025-03-09 02:41:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.14) internal successors, (171), 148 states have internal predecessors, (171), 24 states have call successors, (24), 9 states have call predecessors, (24), 12 states have return successors, (52), 32 states have call predecessors, (52), 23 states have call successors, (52) [2025-03-09 02:41:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2025-03-09 02:41:47,996 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 50 [2025-03-09 02:41:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:47,997 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2025-03-09 02:41:47,997 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) [2025-03-09 02:41:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2025-03-09 02:41:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 02:41:47,998 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:47,998 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:47,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 02:41:47,998 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:47,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1048367559, now seen corresponding path program 1 times [2025-03-09 02:41:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794968748] [2025-03-09 02:41:47,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:48,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 02:41:48,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 02:41:48,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-09 02:41:48,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794968748] [2025-03-09 02:41:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794968748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:48,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:48,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:48,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11642947] [2025-03-09 02:41:48,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:48,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:48,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:48,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:48,078 INFO L87 Difference]: Start difference. First operand 190 states and 247 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) [2025-03-09 02:41:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:48,099 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2025-03-09 02:41:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:48,099 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 65 [2025-03-09 02:41:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:48,101 INFO L225 Difference]: With dead ends: 206 [2025-03-09 02:41:48,101 INFO L226 Difference]: Without dead ends: 205 [2025-03-09 02:41:48,101 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 [2025-03-09 02:41:48,101 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 2 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:48,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 131 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-03-09 02:41:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2025-03-09 02:41:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 147 states have (on average 1.1428571428571428) internal successors, (168), 145 states have internal predecessors, (168), 23 states have call successors, (23), 9 states have call predecessors, (23), 12 states have return successors, (49), 31 states have call predecessors, (49), 22 states have call successors, (49) [2025-03-09 02:41:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 240 transitions. [2025-03-09 02:41:48,109 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 240 transitions. Word has length 65 [2025-03-09 02:41:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:48,110 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 240 transitions. [2025-03-09 02:41:48,110 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) [2025-03-09 02:41:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 240 transitions. [2025-03-09 02:41:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-09 02:41:48,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:48,110 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:48,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 02:41:48,111 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:48,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1127055372, now seen corresponding path program 1 times [2025-03-09 02:41:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024683319] [2025-03-09 02:41:48,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:48,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:48,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-09 02:41:48,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 02:41:48,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 02:41:48,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:48,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024683319] [2025-03-09 02:41:48,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024683319] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:48,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996262315] [2025-03-09 02:41:48,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:48,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:48,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:48,263 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) [2025-03-09 02:41:48,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 02:41:48,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-09 02:41:48,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 02:41:48,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 02:41:48,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 02:41:48,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 02:41:48,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996262315] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:48,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:48,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2025-03-09 02:41:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014148068] [2025-03-09 02:41:48,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:48,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 02:41:48,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:48,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 02:41:48,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:41:48,519 INFO L87 Difference]: Start difference. First operand 186 states and 240 transitions. Second operand has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 11 states have internal predecessors, (56), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:48,759 INFO L93 Difference]: Finished difference Result 422 states and 575 transitions. [2025-03-09 02:41:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 02:41:48,759 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 11 states have internal predecessors, (56), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2025-03-09 02:41:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:48,762 INFO L225 Difference]: With dead ends: 422 [2025-03-09 02:41:48,762 INFO L226 Difference]: Without dead ends: 257 [2025-03-09 02:41:48,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 130 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:41:48,763 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 185 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:48,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 246 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-03-09 02:41:48,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2025-03-09 02:41:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 198 states have (on average 1.1464646464646464) internal successors, (227), 194 states have internal predecessors, (227), 31 states have call successors, (31), 12 states have call predecessors, (31), 16 states have return successors, (61), 42 states have call predecessors, (61), 30 states have call successors, (61) [2025-03-09 02:41:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 319 transitions. [2025-03-09 02:41:48,778 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 319 transitions. Word has length 69 [2025-03-09 02:41:48,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:48,779 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 319 transitions. [2025-03-09 02:41:48,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 11 states have internal predecessors, (56), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 319 transitions. [2025-03-09 02:41:48,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-09 02:41:48,779 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:48,779 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:48,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:48,980 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 [2025-03-09 02:41:48,980 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:48,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1460580902, now seen corresponding path program 1 times [2025-03-09 02:41:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853831155] [2025-03-09 02:41:48,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:48,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-09 02:41:48,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-09 02:41:48,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-09 02:41:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853831155] [2025-03-09 02:41:49,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853831155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:49,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883627020] [2025-03-09 02:41:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:49,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:49,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:49,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:49,026 INFO L87 Difference]: Start difference. First operand 249 states and 319 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) [2025-03-09 02:41:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:49,049 INFO L93 Difference]: Finished difference Result 271 states and 344 transitions. [2025-03-09 02:41:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:49,049 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 62 [2025-03-09 02:41:49,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:49,050 INFO L225 Difference]: With dead ends: 271 [2025-03-09 02:41:49,051 INFO L226 Difference]: Without dead ends: 270 [2025-03-09 02:41:49,051 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 [2025-03-09 02:41:49,051 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 [2025-03-09 02:41:49,052 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] [2025-03-09 02:41:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-03-09 02:41:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 257. [2025-03-09 02:41:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 205 states have (on average 1.1414634146341462) internal successors, (234), 200 states have internal predecessors, (234), 31 states have call successors, (31), 12 states have call predecessors, (31), 17 states have return successors, (62), 44 states have call predecessors, (62), 30 states have call successors, (62) [2025-03-09 02:41:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 327 transitions. [2025-03-09 02:41:49,064 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 327 transitions. Word has length 62 [2025-03-09 02:41:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:49,065 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 327 transitions. [2025-03-09 02:41:49,065 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) [2025-03-09 02:41:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 327 transitions. [2025-03-09 02:41:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-09 02:41:49,065 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:49,065 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:49,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 02:41:49,066 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:49,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:49,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1933183666, now seen corresponding path program 1 times [2025-03-09 02:41:49,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:49,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462329114] [2025-03-09 02:41:49,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:49,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:49,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-09 02:41:49,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-09 02:41:49,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:49,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-09 02:41:49,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:49,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462329114] [2025-03-09 02:41:49,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462329114] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:49,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071570429] [2025-03-09 02:41:49,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:49,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:49,170 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) [2025-03-09 02:41:49,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 02:41:49,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-09 02:41:49,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-09 02:41:49,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:49,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 02:41:49,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-09 02:41:49,283 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:41:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071570429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:41:49,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2025-03-09 02:41:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896460505] [2025-03-09 02:41:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:49,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 02:41:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:49,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 02:41:49,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:41:49,286 INFO L87 Difference]: Start difference. First operand 257 states and 327 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) [2025-03-09 02:41:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:49,339 INFO L93 Difference]: Finished difference Result 334 states and 443 transitions. [2025-03-09 02:41:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 02:41:49,340 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 63 [2025-03-09 02:41:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:49,342 INFO L225 Difference]: With dead ends: 334 [2025-03-09 02:41:49,342 INFO L226 Difference]: Without dead ends: 333 [2025-03-09 02:41:49,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:41:49,343 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:49,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 174 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2025-03-09 02:41:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 287. [2025-03-09 02:41:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.1441048034934498) internal successors, (262), 222 states have internal predecessors, (262), 33 states have call successors, (33), 12 states have call predecessors, (33), 21 states have return successors, (80), 52 states have call predecessors, (80), 32 states have call successors, (80) [2025-03-09 02:41:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 375 transitions. [2025-03-09 02:41:49,369 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 375 transitions. Word has length 63 [2025-03-09 02:41:49,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:49,369 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 375 transitions. [2025-03-09 02:41:49,369 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) [2025-03-09 02:41:49,369 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 375 transitions. [2025-03-09 02:41:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-09 02:41:49,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:49,370 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:49,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:49,575 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 [2025-03-09 02:41:49,575 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:49,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 568523168, now seen corresponding path program 1 times [2025-03-09 02:41:49,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:49,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460685929] [2025-03-09 02:41:49,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:49,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-09 02:41:49,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-09 02:41:49,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:49,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-03-09 02:41:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460685929] [2025-03-09 02:41:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460685929] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854592562] [2025-03-09 02:41:49,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:49,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:49,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:49,627 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) [2025-03-09 02:41:49,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 02:41:49,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-09 02:41:49,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-09 02:41:49,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:49,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 02:41:49,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 87 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-09 02:41:49,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 39 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-09 02:41:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854592562] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:49,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:49,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 18 [2025-03-09 02:41:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409540841] [2025-03-09 02:41:49,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:49,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 02:41:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:49,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 02:41:49,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2025-03-09 02:41:49,945 INFO L87 Difference]: Start difference. First operand 287 states and 375 transitions. Second operand has 18 states, 17 states have (on average 5.0) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-09 02:41:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:50,264 INFO L93 Difference]: Finished difference Result 372 states and 476 transitions. [2025-03-09 02:41:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 02:41:50,265 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.0) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 81 [2025-03-09 02:41:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:50,267 INFO L225 Difference]: With dead ends: 372 [2025-03-09 02:41:50,267 INFO L226 Difference]: Without dead ends: 310 [2025-03-09 02:41:50,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 140 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2025-03-09 02:41:50,269 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 192 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:50,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 248 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2025-03-09 02:41:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 295. [2025-03-09 02:41:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 235 states have (on average 1.1404255319148937) internal successors, (268), 228 states have internal predecessors, (268), 34 states have call successors, (34), 13 states have call predecessors, (34), 22 states have return successors, (84), 53 states have call predecessors, (84), 33 states have call successors, (84) [2025-03-09 02:41:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 386 transitions. [2025-03-09 02:41:50,287 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 386 transitions. Word has length 81 [2025-03-09 02:41:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:50,287 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 386 transitions. [2025-03-09 02:41:50,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.0) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-09 02:41:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 386 transitions. [2025-03-09 02:41:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 02:41:50,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:50,290 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:50,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:50,494 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 [2025-03-09 02:41:50,494 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:50,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1700037159, now seen corresponding path program 1 times [2025-03-09 02:41:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108077169] [2025-03-09 02:41:50,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:50,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 02:41:50,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 02:41:50,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:50,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-09 02:41:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108077169] [2025-03-09 02:41:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108077169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:50,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:50,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988609545] [2025-03-09 02:41:50,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:50,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:50,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:50,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:50,549 INFO L87 Difference]: Start difference. First operand 295 states and 386 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) [2025-03-09 02:41:50,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:50,604 INFO L93 Difference]: Finished difference Result 307 states and 403 transitions. [2025-03-09 02:41:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:50,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2025-03-09 02:41:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:50,606 INFO L225 Difference]: With dead ends: 307 [2025-03-09 02:41:50,606 INFO L226 Difference]: Without dead ends: 306 [2025-03-09 02:41:50,606 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 [2025-03-09 02:41:50,607 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 [2025-03-09 02:41:50,607 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] [2025-03-09 02:41:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2025-03-09 02:41:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 297. [2025-03-09 02:41:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 237 states have (on average 1.130801687763713) internal successors, (268), 229 states have internal predecessors, (268), 34 states have call successors, (34), 13 states have call predecessors, (34), 22 states have return successors, (84), 54 states have call predecessors, (84), 33 states have call successors, (84) [2025-03-09 02:41:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 386 transitions. [2025-03-09 02:41:50,618 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 386 transitions. Word has length 66 [2025-03-09 02:41:50,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:50,619 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 386 transitions. [2025-03-09 02:41:50,619 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) [2025-03-09 02:41:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 386 transitions. [2025-03-09 02:41:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-09 02:41:50,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:50,620 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:50,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 02:41:50,622 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:50,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash -440515929, now seen corresponding path program 1 times [2025-03-09 02:41:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:50,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866010325] [2025-03-09 02:41:50,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:50,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 02:41:50,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 02:41:50,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:50,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-09 02:41:50,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866010325] [2025-03-09 02:41:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866010325] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048920997] [2025-03-09 02:41:50,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:50,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:50,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:50,668 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) [2025-03-09 02:41:50,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 02:41:50,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 02:41:50,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 02:41:50,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:50,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:50,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 02:41:50,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 71 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:41:50,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 02:41:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048920997] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:51,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 21 [2025-03-09 02:41:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866413658] [2025-03-09 02:41:51,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:51,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 02:41:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:51,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 02:41:51,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2025-03-09 02:41:51,011 INFO L87 Difference]: Start difference. First operand 297 states and 386 transitions. Second operand has 21 states, 20 states have (on average 4.25) internal successors, (85), 15 states have internal predecessors, (85), 10 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-09 02:41:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:51,389 INFO L93 Difference]: Finished difference Result 596 states and 811 transitions. [2025-03-09 02:41:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 02:41:51,389 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.25) internal successors, (85), 15 states have internal predecessors, (85), 10 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 73 [2025-03-09 02:41:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:51,391 INFO L225 Difference]: With dead ends: 596 [2025-03-09 02:41:51,391 INFO L226 Difference]: Without dead ends: 347 [2025-03-09 02:41:51,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 123 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2025-03-09 02:41:51,393 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 262 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:51,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 351 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:41:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-03-09 02:41:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 320. [2025-03-09 02:41:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 254 states have (on average 1.1299212598425197) internal successors, (287), 248 states have internal predecessors, (287), 37 states have call successors, (37), 14 states have call predecessors, (37), 25 states have return successors, (90), 57 states have call predecessors, (90), 36 states have call successors, (90) [2025-03-09 02:41:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 414 transitions. [2025-03-09 02:41:51,405 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 414 transitions. Word has length 73 [2025-03-09 02:41:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:51,405 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 414 transitions. [2025-03-09 02:41:51,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.25) internal successors, (85), 15 states have internal predecessors, (85), 10 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-09 02:41:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 414 transitions. [2025-03-09 02:41:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-09 02:41:51,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:51,406 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:51,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:51,611 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 [2025-03-09 02:41:51,611 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:51,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1161544385, now seen corresponding path program 1 times [2025-03-09 02:41:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:51,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938493575] [2025-03-09 02:41:51,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:51,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-09 02:41:51,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-09 02:41:51,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:51,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-09 02:41:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938493575] [2025-03-09 02:41:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938493575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:51,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834039472] [2025-03-09 02:41:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:51,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:51,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:51,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:51,644 INFO L87 Difference]: Start difference. First operand 320 states and 414 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) [2025-03-09 02:41:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:51,666 INFO L93 Difference]: Finished difference Result 330 states and 426 transitions. [2025-03-09 02:41:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:51,666 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 67 [2025-03-09 02:41:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:51,668 INFO L225 Difference]: With dead ends: 330 [2025-03-09 02:41:51,668 INFO L226 Difference]: Without dead ends: 329 [2025-03-09 02:41:51,668 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 [2025-03-09 02:41:51,669 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 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 [2025-03-09 02:41:51,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 145 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2025-03-09 02:41:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 321. [2025-03-09 02:41:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 255 states have (on average 1.1215686274509804) internal successors, (286), 249 states have internal predecessors, (286), 37 states have call successors, (37), 14 states have call predecessors, (37), 25 states have return successors, (90), 57 states have call predecessors, (90), 36 states have call successors, (90) [2025-03-09 02:41:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 413 transitions. [2025-03-09 02:41:51,680 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 413 transitions. Word has length 67 [2025-03-09 02:41:51,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:51,680 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 413 transitions. [2025-03-09 02:41:51,680 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) [2025-03-09 02:41:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 413 transitions. [2025-03-09 02:41:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-09 02:41:51,681 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:51,681 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:51,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 02:41:51,681 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:51,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1480624147, now seen corresponding path program 1 times [2025-03-09 02:41:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:51,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748281356] [2025-03-09 02:41:51,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:51,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-09 02:41:51,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-09 02:41:51,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:51,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-09 02:41:51,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:51,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748281356] [2025-03-09 02:41:51,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748281356] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:51,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577925369] [2025-03-09 02:41:51,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:51,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:51,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:51,855 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 02:41:51,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 02:41:51,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-09 02:41:51,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-09 02:41:51,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:51,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:41:51,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-09 02:41:51,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-03-09 02:41:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577925369] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:52,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:52,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 7] total 27 [2025-03-09 02:41:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250976188] [2025-03-09 02:41:52,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:52,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-09 02:41:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:52,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-09 02:41:52,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2025-03-09 02:41:52,144 INFO L87 Difference]: Start difference. First operand 321 states and 413 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-09 02:41:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:52,830 INFO L93 Difference]: Finished difference Result 648 states and 870 transitions. [2025-03-09 02:41:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-09 02:41:52,833 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 80 [2025-03-09 02:41:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:52,835 INFO L225 Difference]: With dead ends: 648 [2025-03-09 02:41:52,836 INFO L226 Difference]: Without dead ends: 390 [2025-03-09 02:41:52,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=364, Invalid=2392, Unknown=0, NotChecked=0, Total=2756 [2025-03-09 02:41:52,838 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 216 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:52,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 324 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-09 02:41:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-03-09 02:41:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 308. [2025-03-09 02:41:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 242 states have (on average 1.0991735537190082) internal successors, (266), 243 states have internal predecessors, (266), 36 states have call successors, (36), 14 states have call predecessors, (36), 26 states have return successors, (75), 50 states have call predecessors, (75), 35 states have call successors, (75) [2025-03-09 02:41:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 377 transitions. [2025-03-09 02:41:52,853 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 377 transitions. Word has length 80 [2025-03-09 02:41:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:52,853 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 377 transitions. [2025-03-09 02:41:52,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-09 02:41:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 377 transitions. [2025-03-09 02:41:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-09 02:41:52,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:52,855 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:52,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:53,055 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,SelfDestructingSolverStorable21 [2025-03-09 02:41:53,056 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:53,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1332435488, now seen corresponding path program 1 times [2025-03-09 02:41:53,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:53,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967850024] [2025-03-09 02:41:53,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:53,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-09 02:41:53,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-09 02:41:53,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:53,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-09 02:41:53,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:53,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967850024] [2025-03-09 02:41:53,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967850024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:53,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:53,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:53,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402655593] [2025-03-09 02:41:53,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:53,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:53,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:53,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:53,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:53,111 INFO L87 Difference]: Start difference. First operand 308 states and 377 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) [2025-03-09 02:41:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:53,134 INFO L93 Difference]: Finished difference Result 326 states and 402 transitions. [2025-03-09 02:41:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:53,134 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 75 [2025-03-09 02:41:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:53,135 INFO L225 Difference]: With dead ends: 326 [2025-03-09 02:41:53,135 INFO L226 Difference]: Without dead ends: 325 [2025-03-09 02:41:53,136 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 [2025-03-09 02:41:53,137 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:53,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2025-03-09 02:41:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 312. [2025-03-09 02:41:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 246 states have (on average 1.0975609756097562) internal successors, (270), 245 states have internal predecessors, (270), 36 states have call successors, (36), 14 states have call predecessors, (36), 26 states have return successors, (75), 52 states have call predecessors, (75), 35 states have call successors, (75) [2025-03-09 02:41:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 381 transitions. [2025-03-09 02:41:53,148 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 381 transitions. Word has length 75 [2025-03-09 02:41:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:53,149 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 381 transitions. [2025-03-09 02:41:53,149 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) [2025-03-09 02:41:53,149 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 381 transitions. [2025-03-09 02:41:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-09 02:41:53,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:53,150 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:53,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 02:41:53,150 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:53,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1644172824, now seen corresponding path program 1 times [2025-03-09 02:41:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:53,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416484588] [2025-03-09 02:41:53,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:53,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:53,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-09 02:41:53,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-09 02:41:53,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:53,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-09 02:41:53,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416484588] [2025-03-09 02:41:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416484588] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859541258] [2025-03-09 02:41:53,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:53,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:53,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:53,249 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) [2025-03-09 02:41:53,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 02:41:53,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-09 02:41:53,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-09 02:41:53,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:53,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:53,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:41:53,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:41:53,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-09 02:41:53,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859541258] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:53,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:53,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2025-03-09 02:41:53,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006125033] [2025-03-09 02:41:53,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:53,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 02:41:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:53,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 02:41:53,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:41:53,466 INFO L87 Difference]: Start difference. First operand 312 states and 381 transitions. Second operand has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-09 02:41:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:53,645 INFO L93 Difference]: Finished difference Result 587 states and 719 transitions. [2025-03-09 02:41:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 02:41:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 76 [2025-03-09 02:41:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:53,648 INFO L225 Difference]: With dead ends: 587 [2025-03-09 02:41:53,648 INFO L226 Difference]: Without dead ends: 330 [2025-03-09 02:41:53,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2025-03-09 02:41:53,649 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 124 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:53,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 306 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-03-09 02:41:53,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 310. [2025-03-09 02:41:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 245 states have (on average 1.0938775510204082) internal successors, (268), 243 states have internal predecessors, (268), 36 states have call successors, (36), 14 states have call predecessors, (36), 25 states have return successors, (70), 52 states have call predecessors, (70), 35 states have call successors, (70) [2025-03-09 02:41:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 374 transitions. [2025-03-09 02:41:53,661 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 374 transitions. Word has length 76 [2025-03-09 02:41:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:53,661 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 374 transitions. [2025-03-09 02:41:53,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-09 02:41:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 374 transitions. [2025-03-09 02:41:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-09 02:41:53,662 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:53,662 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:53,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:53,862 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 [2025-03-09 02:41:53,863 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:53,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1116648256, now seen corresponding path program 1 times [2025-03-09 02:41:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:53,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901863476] [2025-03-09 02:41:53,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:53,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-09 02:41:53,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 02:41:53,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:53,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 02:41:53,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:53,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901863476] [2025-03-09 02:41:53,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901863476] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:53,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048442038] [2025-03-09 02:41:53,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:53,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:53,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:53,944 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) [2025-03-09 02:41:53,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 02:41:53,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-09 02:41:53,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 02:41:53,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:53,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:53,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:41:53,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 02:41:54,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 02:41:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048442038] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:54,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:54,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2025-03-09 02:41:54,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217958560] [2025-03-09 02:41:54,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:54,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 02:41:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:54,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 02:41:54,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-09 02:41:54,140 INFO L87 Difference]: Start difference. First operand 310 states and 374 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-09 02:41:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:54,265 INFO L93 Difference]: Finished difference Result 551 states and 663 transitions. [2025-03-09 02:41:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:41:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2025-03-09 02:41:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:54,267 INFO L225 Difference]: With dead ends: 551 [2025-03-09 02:41:54,267 INFO L226 Difference]: Without dead ends: 314 [2025-03-09 02:41:54,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:41:54,269 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 95 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:54,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 323 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-03-09 02:41:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2025-03-09 02:41:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 243 states have (on average 1.0946502057613168) internal successors, (266), 242 states have internal predecessors, (266), 36 states have call successors, (36), 14 states have call predecessors, (36), 25 states have return successors, (69), 51 states have call predecessors, (69), 35 states have call successors, (69) [2025-03-09 02:41:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 371 transitions. [2025-03-09 02:41:54,283 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 371 transitions. Word has length 77 [2025-03-09 02:41:54,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:54,283 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 371 transitions. [2025-03-09 02:41:54,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-09 02:41:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 371 transitions. [2025-03-09 02:41:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-09 02:41:54,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:54,285 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:54,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:54,485 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 [2025-03-09 02:41:54,485 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:54,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash -334744524, now seen corresponding path program 1 times [2025-03-09 02:41:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816055083] [2025-03-09 02:41:54,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:54,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-09 02:41:54,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-09 02:41:54,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:54,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-09 02:41:54,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:54,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816055083] [2025-03-09 02:41:54,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816055083] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:54,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483370339] [2025-03-09 02:41:54,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:54,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:54,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:54,637 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) [2025-03-09 02:41:54,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 02:41:54,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-09 02:41:54,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-09 02:41:54,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:54,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:54,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 02:41:54,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-03-09 02:41:54,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-09 02:41:55,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483370339] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:55,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:55,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 32 [2025-03-09 02:41:55,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339419317] [2025-03-09 02:41:55,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:55,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-09 02:41:55,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:55,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-09 02:41:55,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2025-03-09 02:41:55,116 INFO L87 Difference]: Start difference. First operand 308 states and 371 transitions. Second operand has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-03-09 02:41:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:56,311 INFO L93 Difference]: Finished difference Result 763 states and 1021 transitions. [2025-03-09 02:41:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-09 02:41:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2025-03-09 02:41:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:56,314 INFO L225 Difference]: With dead ends: 763 [2025-03-09 02:41:56,314 INFO L226 Difference]: Without dead ends: 483 [2025-03-09 02:41:56,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=779, Invalid=5227, Unknown=0, NotChecked=0, Total=6006 [2025-03-09 02:41:56,317 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 283 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:56,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 375 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-09 02:41:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2025-03-09 02:41:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 357. [2025-03-09 02:41:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 282 states have (on average 1.0886524822695036) internal successors, (307), 277 states have internal predecessors, (307), 41 states have call successors, (41), 14 states have call predecessors, (41), 30 states have return successors, (128), 65 states have call predecessors, (128), 40 states have call successors, (128) [2025-03-09 02:41:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 476 transitions. [2025-03-09 02:41:56,334 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 476 transitions. Word has length 81 [2025-03-09 02:41:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:56,334 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 476 transitions. [2025-03-09 02:41:56,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-03-09 02:41:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 476 transitions. [2025-03-09 02:41:56,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-09 02:41:56,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:56,336 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:56,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 02:41:56,537 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 [2025-03-09 02:41:56,537 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:56,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1211093050, now seen corresponding path program 1 times [2025-03-09 02:41:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233583106] [2025-03-09 02:41:56,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:56,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-09 02:41:56,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-09 02:41:56,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:56,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-09 02:41:56,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233583106] [2025-03-09 02:41:56,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233583106] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004832022] [2025-03-09 02:41:56,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:56,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:56,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:56,580 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) [2025-03-09 02:41:56,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 02:41:56,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-09 02:41:56,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-09 02:41:56,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:56,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:56,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:41:56,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-09 02:41:56,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-09 02:41:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004832022] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:56,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 17 [2025-03-09 02:41:56,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431408238] [2025-03-09 02:41:56,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:56,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 02:41:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:56,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 02:41:56,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2025-03-09 02:41:56,912 INFO L87 Difference]: Start difference. First operand 357 states and 476 transitions. Second operand has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-03-09 02:41:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:57,113 INFO L93 Difference]: Finished difference Result 665 states and 936 transitions. [2025-03-09 02:41:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 02:41:57,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 94 [2025-03-09 02:41:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:57,115 INFO L225 Difference]: With dead ends: 665 [2025-03-09 02:41:57,115 INFO L226 Difference]: Without dead ends: 363 [2025-03-09 02:41:57,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 173 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-03-09 02:41:57,117 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 118 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:57,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 401 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2025-03-09 02:41:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 357. [2025-03-09 02:41:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 282 states have (on average 1.0886524822695036) internal successors, (307), 277 states have internal predecessors, (307), 41 states have call successors, (41), 14 states have call predecessors, (41), 30 states have return successors, (127), 65 states have call predecessors, (127), 40 states have call successors, (127) [2025-03-09 02:41:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 475 transitions. [2025-03-09 02:41:57,131 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 475 transitions. Word has length 94 [2025-03-09 02:41:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:57,131 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 475 transitions. [2025-03-09 02:41:57,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-03-09 02:41:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 475 transitions. [2025-03-09 02:41:57,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-09 02:41:57,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:57,132 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:57,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:57,337 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 [2025-03-09 02:41:57,337 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:57,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:57,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1777062964, now seen corresponding path program 2 times [2025-03-09 02:41:57,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:57,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181568432] [2025-03-09 02:41:57,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:57,341 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-09 02:41:57,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 02:41:57,346 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:57,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-09 02:41:57,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:57,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181568432] [2025-03-09 02:41:57,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181568432] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:57,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768816209] [2025-03-09 02:41:57,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:57,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:57,509 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) [2025-03-09 02:41:57,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 02:41:57,534 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-09 02:41:57,551 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 02:41:57,551 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:57,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:57,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 02:41:57,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-09 02:41:57,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-09 02:41:58,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768816209] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:58,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:58,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-03-09 02:41:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971397956] [2025-03-09 02:41:58,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:58,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-09 02:41:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:58,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-09 02:41:58,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2025-03-09 02:41:58,080 INFO L87 Difference]: Start difference. First operand 357 states and 475 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) [2025-03-09 02:41:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:58,463 INFO L93 Difference]: Finished difference Result 662 states and 938 transitions. [2025-03-09 02:41:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-03-09 02:41:58,463 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 95 [2025-03-09 02:41:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:58,466 INFO L225 Difference]: With dead ends: 662 [2025-03-09 02:41:58,466 INFO L226 Difference]: Without dead ends: 659 [2025-03-09 02:41:58,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 166 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=2568, Unknown=0, NotChecked=0, Total=2970 [2025-03-09 02:41:58,468 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 43 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:58,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 559 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-09 02:41:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 420. [2025-03-09 02:41:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 330 states have (on average 1.0636363636363637) internal successors, (351), 329 states have internal predecessors, (351), 47 states have call successors, (47), 14 states have call predecessors, (47), 39 states have return successors, (186), 76 states have call predecessors, (186), 46 states have call successors, (186) [2025-03-09 02:41:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 584 transitions. [2025-03-09 02:41:58,491 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 584 transitions. Word has length 95 [2025-03-09 02:41:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:58,491 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 584 transitions. [2025-03-09 02:41:58,491 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) [2025-03-09 02:41:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 584 transitions. [2025-03-09 02:41:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-09 02:41:58,492 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:58,493 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:58,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:58,696 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 [2025-03-09 02:41:58,696 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:58,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash -745622956, now seen corresponding path program 1 times [2025-03-09 02:41:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571945269] [2025-03-09 02:41:58,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:58,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-09 02:41:58,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-09 02:41:58,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:58,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-09 02:41:58,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:58,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571945269] [2025-03-09 02:41:58,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571945269] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:58,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329341618] [2025-03-09 02:41:58,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:58,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:58,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:58,871 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) [2025-03-09 02:41:58,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 02:41:58,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-09 02:41:58,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-09 02:41:58,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:58,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:58,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-09 02:41:58,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-03-09 02:41:59,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-03-09 02:41:59,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329341618] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:59,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:59,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2025-03-09 02:41:59,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918875940] [2025-03-09 02:41:59,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:59,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-09 02:41:59,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:59,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-09 02:41:59,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2025-03-09 02:41:59,344 INFO L87 Difference]: Start difference. First operand 420 states and 584 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) [2025-03-09 02:41:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:59,551 INFO L93 Difference]: Finished difference Result 576 states and 776 transitions. [2025-03-09 02:41:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-09 02:41:59,551 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 96 [2025-03-09 02:41:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:59,554 INFO L225 Difference]: With dead ends: 576 [2025-03-09 02:41:59,554 INFO L226 Difference]: Without dead ends: 574 [2025-03-09 02:41:59,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2025-03-09 02:41:59,555 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:59,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 595 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-09 02:41:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 416. [2025-03-09 02:41:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 326 states have (on average 1.039877300613497) internal successors, (339), 327 states have internal predecessors, (339), 45 states have call successors, (45), 14 states have call predecessors, (45), 41 states have return successors, (178), 74 states have call predecessors, (178), 44 states have call successors, (178) [2025-03-09 02:41:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 562 transitions. [2025-03-09 02:41:59,579 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 562 transitions. Word has length 96 [2025-03-09 02:41:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:59,580 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 562 transitions. [2025-03-09 02:41:59,580 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) [2025-03-09 02:41:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 562 transitions. [2025-03-09 02:41:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-09 02:41:59,581 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:59,581 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 02:41:59,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 02:41:59,782 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 [2025-03-09 02:41:59,782 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:59,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash 599923779, now seen corresponding path program 1 times [2025-03-09 02:41:59,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:59,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588189801] [2025-03-09 02:41:59,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:59,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:59,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-09 02:41:59,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-09 02:41:59,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:59,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-03-09 02:42:00,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588189801] [2025-03-09 02:42:00,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588189801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752748641] [2025-03-09 02:42:00,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:42:00,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:00,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:00,084 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) [2025-03-09 02:42:00,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 02:42:00,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-09 02:42:00,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-09 02:42:00,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:42:00,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:00,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-09 02:42:00,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-09 02:42:00,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2025-03-09 02:42:01,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752748641] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:01,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:01,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2025-03-09 02:42:01,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390375031] [2025-03-09 02:42:01,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:01,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-09 02:42:01,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:01,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-09 02:42:01,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2025-03-09 02:42:01,135 INFO L87 Difference]: Start difference. First operand 416 states and 562 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) [2025-03-09 02:42:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:01,470 INFO L93 Difference]: Finished difference Result 671 states and 905 transitions. [2025-03-09 02:42:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-09 02:42:01,470 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 149 [2025-03-09 02:42:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:01,473 INFO L225 Difference]: With dead ends: 671 [2025-03-09 02:42:01,473 INFO L226 Difference]: Without dead ends: 666 [2025-03-09 02:42:01,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 269 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=567, Invalid=3465, Unknown=0, NotChecked=0, Total=4032 [2025-03-09 02:42:01,475 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 44 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:01,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 629 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:42:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2025-03-09 02:42:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 469. [2025-03-09 02:42:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 367 states have (on average 1.0299727520435968) internal successors, (378), 369 states have internal predecessors, (378), 49 states have call successors, (49), 14 states have call predecessors, (49), 49 states have return successors, (211), 85 states have call predecessors, (211), 48 states have call successors, (211) [2025-03-09 02:42:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 638 transitions. [2025-03-09 02:42:01,496 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 638 transitions. Word has length 149 [2025-03-09 02:42:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:01,496 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 638 transitions. [2025-03-09 02:42:01,496 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) [2025-03-09 02:42:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 638 transitions. [2025-03-09 02:42:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-09 02:42:01,498 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:42:01,498 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-09 02:42:01,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 02:42:01,698 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 [2025-03-09 02:42:01,699 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:42:01,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:42:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash 54095775, now seen corresponding path program 1 times [2025-03-09 02:42:01,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:42:01,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590121596] [2025-03-09 02:42:01,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:42:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:42:01,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-09 02:42:01,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-09 02:42:01,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:42:01,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 117 proven. 84 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2025-03-09 02:42:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:01,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590121596] [2025-03-09 02:42:01,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590121596] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:01,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462515210] [2025-03-09 02:42:01,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:42:01,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:01,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:01,839 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) [2025-03-09 02:42:01,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 02:42:01,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-09 02:42:01,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-09 02:42:01,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:42:01,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:01,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:42:01,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 315 proven. 48 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2025-03-09 02:42:01,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 68 proven. 165 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2025-03-09 02:42:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462515210] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:02,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:02,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 20 [2025-03-09 02:42:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850350610] [2025-03-09 02:42:02,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:02,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 02:42:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:02,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 02:42:02,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-03-09 02:42:02,248 INFO L87 Difference]: Start difference. First operand 469 states and 638 transitions. Second operand has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 18 states have internal predecessors, (129), 10 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 12 states have call predecessors, (23), 8 states have call successors, (23) [2025-03-09 02:42:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:02,449 INFO L93 Difference]: Finished difference Result 895 states and 1235 transitions. [2025-03-09 02:42:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 02:42:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 18 states have internal predecessors, (129), 10 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 12 states have call predecessors, (23), 8 states have call successors, (23) Word has length 171 [2025-03-09 02:42:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:02,452 INFO L225 Difference]: With dead ends: 895 [2025-03-09 02:42:02,452 INFO L226 Difference]: Without dead ends: 371 [2025-03-09 02:42:02,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 330 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2025-03-09 02:42:02,454 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 109 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:02,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 332 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:42:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2025-03-09 02:42:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 320. [2025-03-09 02:42:02,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 250 states have (on average 1.032) internal successors, (258), 253 states have internal predecessors, (258), 36 states have call successors, (36), 15 states have call predecessors, (36), 31 states have return successors, (79), 51 states have call predecessors, (79), 35 states have call successors, (79) [2025-03-09 02:42:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 373 transitions. [2025-03-09 02:42:02,467 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 373 transitions. Word has length 171 [2025-03-09 02:42:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:02,468 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 373 transitions. [2025-03-09 02:42:02,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 18 states have internal predecessors, (129), 10 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 12 states have call predecessors, (23), 8 states have call successors, (23) [2025-03-09 02:42:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 373 transitions. [2025-03-09 02:42:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2025-03-09 02:42:02,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:42:02,470 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 11, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1] [2025-03-09 02:42:02,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-09 02:42:02,670 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 [2025-03-09 02:42:02,670 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:42:02,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:42:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1577964979, now seen corresponding path program 3 times [2025-03-09 02:42:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:42:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465459761] [2025-03-09 02:42:02,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:42:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:42:02,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 236 statements into 9 equivalence classes. [2025-03-09 02:42:02,686 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 75 of 236 statements. [2025-03-09 02:42:02,686 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-09 02:42:02,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 192 proven. 8 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2025-03-09 02:42:02,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465459761] [2025-03-09 02:42:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465459761] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840023714] [2025-03-09 02:42:02,789 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:42:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:02,790 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) [2025-03-09 02:42:02,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 02:42:02,839 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 236 statements into 9 equivalence classes. [2025-03-09 02:42:02,851 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 75 of 236 statements. [2025-03-09 02:42:02,852 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-09 02:42:02,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:02,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:42:02,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 194 proven. 4 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2025-03-09 02:42:02,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 194 proven. 4 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2025-03-09 02:42:03,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840023714] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:03,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:03,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2025-03-09 02:42:03,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542010688] [2025-03-09 02:42:03,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:03,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 02:42:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:03,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 02:42:03,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2025-03-09 02:42:03,290 INFO L87 Difference]: Start difference. First operand 320 states and 373 transitions. Second operand has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 6 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-09 02:42:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:03,430 INFO L93 Difference]: Finished difference Result 404 states and 484 transitions. [2025-03-09 02:42:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-09 02:42:03,431 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 6 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) Word has length 236 [2025-03-09 02:42:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:03,433 INFO L225 Difference]: With dead ends: 404 [2025-03-09 02:42:03,433 INFO L226 Difference]: Without dead ends: 396 [2025-03-09 02:42:03,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 454 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-03-09 02:42:03,433 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:03,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 556 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:42:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-03-09 02:42:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 370. [2025-03-09 02:42:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 289 states have (on average 1.027681660899654) internal successors, (297), 292 states have internal predecessors, (297), 41 states have call successors, (41), 15 states have call predecessors, (41), 37 states have return successors, (111), 62 states have call predecessors, (111), 40 states have call successors, (111) [2025-03-09 02:42:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 449 transitions. [2025-03-09 02:42:03,451 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 449 transitions. Word has length 236 [2025-03-09 02:42:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:03,452 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 449 transitions. [2025-03-09 02:42:03,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 6 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2025-03-09 02:42:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 449 transitions. [2025-03-09 02:42:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2025-03-09 02:42:03,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:42:03,454 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 11, 10, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1] [2025-03-09 02:42:03,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-09 02:42:03,656 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 [2025-03-09 02:42:03,656 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:42:03,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:42:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash -784658086, now seen corresponding path program 2 times [2025-03-09 02:42:03,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:42:03,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322002074] [2025-03-09 02:42:03,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:42:03,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:42:03,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 238 statements into 2 equivalence classes. [2025-03-09 02:42:03,673 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 238 of 238 statements. [2025-03-09 02:42:03,674 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:42:03,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 154 proven. 54 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2025-03-09 02:42:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:03,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322002074] [2025-03-09 02:42:03,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322002074] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:03,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100379355] [2025-03-09 02:42:03,770 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:42:03,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:03,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:03,773 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) [2025-03-09 02:42:03,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 02:42:03,825 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 238 statements into 2 equivalence classes. [2025-03-09 02:42:03,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 238 of 238 statements. [2025-03-09 02:42:03,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:42:03,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:03,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:42:03,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 479 proven. 71 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2025-03-09 02:42:03,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 160 proven. 134 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2025-03-09 02:42:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100379355] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:04,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:04,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 16 [2025-03-09 02:42:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159300289] [2025-03-09 02:42:04,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:04,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 02:42:04,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:04,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 02:42:04,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:42:04,287 INFO L87 Difference]: Start difference. First operand 370 states and 449 transitions. Second operand has 16 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2025-03-09 02:42:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:04,484 INFO L93 Difference]: Finished difference Result 725 states and 908 transitions. [2025-03-09 02:42:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 02:42:04,484 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) Word has length 238 [2025-03-09 02:42:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:04,486 INFO L225 Difference]: With dead ends: 725 [2025-03-09 02:42:04,486 INFO L226 Difference]: Without dead ends: 382 [2025-03-09 02:42:04,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 466 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2025-03-09 02:42:04,487 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 84 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:04,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 301 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:42:04,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2025-03-09 02:42:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 338. [2025-03-09 02:42:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 264 states have (on average 1.0303030303030303) internal successors, (272), 267 states have internal predecessors, (272), 38 states have call successors, (38), 16 states have call predecessors, (38), 33 states have return successors, (78), 54 states have call predecessors, (78), 37 states have call successors, (78) [2025-03-09 02:42:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 388 transitions. [2025-03-09 02:42:04,501 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 388 transitions. Word has length 238 [2025-03-09 02:42:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:04,502 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 388 transitions. [2025-03-09 02:42:04,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2025-03-09 02:42:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 388 transitions. [2025-03-09 02:42:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2025-03-09 02:42:04,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:42:04,504 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 11, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1] [2025-03-09 02:42:04,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-09 02:42:04,709 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 [2025-03-09 02:42:04,709 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:42:04,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:42:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1329732788, now seen corresponding path program 3 times [2025-03-09 02:42:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:42:04,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599875379] [2025-03-09 02:42:04,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:42:04,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:42:04,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 258 statements into 9 equivalence classes. [2025-03-09 02:42:04,721 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 76 of 258 statements. [2025-03-09 02:42:04,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-09 02:42:04,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 303 proven. 20 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2025-03-09 02:42:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599875379] [2025-03-09 02:42:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599875379] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241581640] [2025-03-09 02:42:04,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:42:04,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:04,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:04,795 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) [2025-03-09 02:42:04,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 02:42:04,844 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 258 statements into 9 equivalence classes. [2025-03-09 02:42:04,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 76 of 258 statements. [2025-03-09 02:42:04,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-09 02:42:04,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:04,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:42:04,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 343 proven. 28 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2025-03-09 02:42:04,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 343 proven. 28 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2025-03-09 02:42:05,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241581640] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:05,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:05,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-03-09 02:42:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428742640] [2025-03-09 02:42:05,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:05,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 02:42:05,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:05,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 02:42:05,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2025-03-09 02:42:05,284 INFO L87 Difference]: Start difference. First operand 338 states and 388 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-03-09 02:42:05,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:05,459 INFO L93 Difference]: Finished difference Result 523 states and 621 transitions. [2025-03-09 02:42:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 02:42:05,459 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 258 [2025-03-09 02:42:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:05,460 INFO L225 Difference]: With dead ends: 523 [2025-03-09 02:42:05,460 INFO L226 Difference]: Without dead ends: 238 [2025-03-09 02:42:05,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 504 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2025-03-09 02:42:05,467 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 111 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:05,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 151 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:42:05,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-03-09 02:42:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 215. [2025-03-09 02:42:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 171 states have internal predecessors, (174), 26 states have call successors, (26), 17 states have call predecessors, (26), 18 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2025-03-09 02:42:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 232 transitions. [2025-03-09 02:42:05,476 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 232 transitions. Word has length 258 [2025-03-09 02:42:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:05,476 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 232 transitions. [2025-03-09 02:42:05,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2025-03-09 02:42:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 232 transitions. [2025-03-09 02:42:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2025-03-09 02:42:05,478 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:42:05,478 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 1, 1, 1, 1] [2025-03-09 02:42:05,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-09 02:42:05,678 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 [2025-03-09 02:42:05,679 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:42:05,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:42:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash 117710902, now seen corresponding path program 4 times [2025-03-09 02:42:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:42:05,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844622194] [2025-03-09 02:42:05,680 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:42:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:42:05,686 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 242 statements into 2 equivalence classes. [2025-03-09 02:42:05,694 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 145 of 242 statements. [2025-03-09 02:42:05,694 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:42:05,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 270 proven. 98 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2025-03-09 02:42:05,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844622194] [2025-03-09 02:42:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844622194] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704877249] [2025-03-09 02:42:05,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:42:05,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:05,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:05,783 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) [2025-03-09 02:42:05,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 02:42:05,834 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 242 statements into 2 equivalence classes. [2025-03-09 02:42:05,855 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 145 of 242 statements. [2025-03-09 02:42:05,855 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:42:05,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:05,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:42:05,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 270 proven. 98 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2025-03-09 02:42:05,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 274 proven. 100 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-09 02:42:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704877249] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:06,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 15 [2025-03-09 02:42:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453731653] [2025-03-09 02:42:06,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:06,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 02:42:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:06,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 02:42:06,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:42:06,325 INFO L87 Difference]: Start difference. First operand 215 states and 232 transitions. Second operand has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-03-09 02:42:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:06,455 INFO L93 Difference]: Finished difference Result 237 states and 256 transitions. [2025-03-09 02:42:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 02:42:06,456 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 242 [2025-03-09 02:42:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:06,457 INFO L225 Difference]: With dead ends: 237 [2025-03-09 02:42:06,457 INFO L226 Difference]: Without dead ends: 210 [2025-03-09 02:42:06,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 476 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2025-03-09 02:42:06,458 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:06,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 234 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:42:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-03-09 02:42:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2025-03-09 02:42:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.0240963855421688) internal successors, (170), 167 states have internal predecessors, (170), 26 states have call successors, (26), 17 states have call predecessors, (26), 17 states have return successors, (30), 25 states have call predecessors, (30), 25 states have call successors, (30) [2025-03-09 02:42:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 226 transitions. [2025-03-09 02:42:06,468 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 226 transitions. Word has length 242 [2025-03-09 02:42:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:06,468 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 226 transitions. [2025-03-09 02:42:06,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-03-09 02:42:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 226 transitions. [2025-03-09 02:42:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2025-03-09 02:42:06,471 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:42:06,471 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2025-03-09 02:42:06,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-09 02:42:06,675 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 [2025-03-09 02:42:06,675 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:42:06,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:42:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -506430284, now seen corresponding path program 5 times [2025-03-09 02:42:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:42:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642415624] [2025-03-09 02:42:06,676 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:42:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:42:06,682 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 241 statements into 9 equivalence classes. [2025-03-09 02:42:06,699 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 241 of 241 statements. [2025-03-09 02:42:06,699 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-09 02:42:06,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 162 proven. 245 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2025-03-09 02:42:07,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642415624] [2025-03-09 02:42:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642415624] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263135628] [2025-03-09 02:42:07,657 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:42:07,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:07,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:07,660 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) [2025-03-09 02:42:07,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-09 02:42:07,716 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 241 statements into 9 equivalence classes. [2025-03-09 02:42:07,760 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 241 of 241 statements. [2025-03-09 02:42:07,760 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-09 02:42:07,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:07,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-09 02:42:07,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2025-03-09 02:42:08,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2025-03-09 02:42:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263135628] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:10,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 29] total 57 [2025-03-09 02:42:10,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491043029] [2025-03-09 02:42:10,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:10,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-09 02:42:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:10,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-09 02:42:10,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=2892, Unknown=0, NotChecked=0, Total=3306 [2025-03-09 02:42:10,086 INFO L87 Difference]: Start difference. First operand 210 states and 226 transitions. Second operand has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2025-03-09 02:42:10,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:10,239 INFO L93 Difference]: Finished difference Result 223 states and 239 transitions. [2025-03-09 02:42:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 02:42:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) Word has length 241 [2025-03-09 02:42:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:10,240 INFO L225 Difference]: With dead ends: 223 [2025-03-09 02:42:10,240 INFO L226 Difference]: Without dead ends: 0 [2025-03-09 02:42:10,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 446 SyntacticMatches, 27 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=3195, Unknown=0, NotChecked=0, Total=3660 [2025-03-09 02:42:10,241 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:10,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 597 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:42:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-09 02:42:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-09 02:42:10,242 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) [2025-03-09 02:42:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-09 02:42:10,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2025-03-09 02:42:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:10,242 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 02:42:10,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2025-03-09 02:42:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-09 02:42:10,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-09 02:42:10,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-03-09 02:42:10,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-03-09 02:42:10,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-09 02:42:10,446 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 [2025-03-09 02:42:10,448 INFO L422 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:42:10,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-09 02:42:16,359 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 02:42:16,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 02:42:16 BoogieIcfgContainer [2025-03-09 02:42:16,362 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 02:42:16,362 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 02:42:16,362 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 02:42:16,363 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 02:42:16,363 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:41:42" (3/4) ... [2025-03-09 02:42:16,364 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 02:42:16,368 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo2 [2025-03-09 02:42:16,369 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo1 [2025-03-09 02:42:16,372 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-09 02:42:16,372 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-09 02:42:16,373 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-09 02:42:16,373 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 02:42:16,426 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 02:42:16,426 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 02:42:16,426 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 02:42:16,426 INFO L158 Benchmark]: Toolchain (without parser) took 34148.89ms. Allocated memory was 142.6MB in the beginning and 822.1MB in the end (delta: 679.5MB). Free memory was 105.3MB in the beginning and 418.4MB in the end (delta: -313.1MB). Peak memory consumption was 364.2MB. Max. memory is 16.1GB. [2025-03-09 02:42:16,427 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 02:42:16,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.28ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 95.1MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 02:42:16,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.57ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 02:42:16,427 INFO L158 Benchmark]: Boogie Preprocessor took 28.09ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 02:42:16,427 INFO L158 Benchmark]: IcfgBuilder took 232.56ms. Allocated memory is still 142.6MB. Free memory was 92.4MB in the beginning and 80.6MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 02:42:16,427 INFO L158 Benchmark]: TraceAbstraction took 33654.04ms. Allocated memory was 142.6MB in the beginning and 822.1MB in the end (delta: 679.5MB). Free memory was 80.6MB in the beginning and 426.8MB in the end (delta: -346.1MB). Peak memory consumption was 461.9MB. Max. memory is 16.1GB. [2025-03-09 02:42:16,427 INFO L158 Benchmark]: Witness Printer took 63.61ms. Allocated memory is still 822.1MB. Free memory was 426.8MB in the beginning and 418.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 02:42:16,432 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.28ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 95.1MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.57ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.09ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 232.56ms. Allocated memory is still 142.6MB. Free memory was 92.4MB in the beginning and 80.6MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 33654.04ms. Allocated memory was 142.6MB in the beginning and 822.1MB in the end (delta: 679.5MB). Free memory was 80.6MB in the beginning and 426.8MB in the end (delta: -346.1MB). Peak memory consumption was 461.9MB. Max. memory is 16.1GB. * Witness Printer took 63.61ms. Allocated memory is still 822.1MB. Free memory was 426.8MB in the beginning and 418.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 65 edges, 12 error locations. Started 1 CEGAR loops. OverallTime: 27.7s, OverallIterations: 36, TraceHistogramMax: 16, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2667 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2537 mSDsluCounter, 10813 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9412 mSDsCounter, 823 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10502 IncrementalHoareTripleChecker+Invalid, 11325 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 823 mSolverCounterUnsat, 1401 mSDtfsCounter, 10502 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5779 GetRequests, 4864 SyntacticMatches, 179 SemanticMatches, 736 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10163 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=469occurred in iteration=30, InterpolantAutomatonStates: 563, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 36 MinimizatonAttempts, 1247 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 5791 NumberOfCodeBlocks, 4911 NumberOfCodeBlocksAsserted, 92 NumberOfCheckSat, 8237 ConstructedInterpolants, 0 QuantifiedInterpolants, 15451 SizeOfPredicates, 60 NumberOfNonLiveVariables, 4563 ConjunctsInSsa, 323 ConjunctsInUnsatCore, 81 InterpolantComputations, 15 PerfectInterpolantSequences, 18146/20828 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 02:42:16,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE