./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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-?-48c9605-m [2025-02-08 10:00:27,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:00:27,288 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:00:27,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:00:27,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:00:27,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:00:27,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:00:27,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:00:27,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:00:27,314 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:00:27,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:00:27,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:00:27,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:00:27,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:00:27,315 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:00:27,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:00:27,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:00:27,316 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:00:27,317 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:00:27,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:00:27,317 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:00:27,317 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:00:27,317 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:00:27,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:00:27,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:00:27,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:00:27,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:00:27,318 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-jdk21/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 [2025-02-08 10:00:27,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:00:27,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:00:27,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:00:27,561 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:00:27,561 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:00:27,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2025-02-08 10:00:28,653 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/18c36bac2/2b6e2676e92d4d01b2847e7238904b86/FLAGd537bef0d [2025-02-08 10:00:28,864 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:00:28,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2025-02-08 10:00:28,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/18c36bac2/2b6e2676e92d4d01b2847e7238904b86/FLAGd537bef0d [2025-02-08 10:00:29,215 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/18c36bac2/2b6e2676e92d4d01b2847e7238904b86 [2025-02-08 10:00:29,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:00:29,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:00:29,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:00:29,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:00:29,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:00:29,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f00722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29, skipping insertion in model container [2025-02-08 10:00:29,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,235 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:00:29,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:00:29,344 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:00:29,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:00:29,368 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:00:29,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29 WrapperNode [2025-02-08 10:00:29,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:00:29,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:00:29,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:00:29,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:00:29,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,391 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-02-08 10:00:29,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:00:29,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:00:29,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:00:29,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:00:29,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,413 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]. [2025-02-08 10:00:29,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,417 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:00:29,425 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:00:29,425 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:00:29,425 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:00:29,426 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (1/1) ... [2025-02-08 10:00:29,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:00:29,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:29,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 10:00:29,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 10:00:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:00:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:00:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-02-08 10:00:29,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-02-08 10:00:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-02-08 10:00:29,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-02-08 10:00:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:00:29,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:00:29,527 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:00:29,528 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:00:29,623 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-02-08 10:00:29,653 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-02-08 10:00:29,664 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2025-02-08 10:00:29,666 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:00:29,677 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:00:29,677 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:00:29,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:00:29 BoogieIcfgContainer [2025-02-08 10:00:29,677 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:00:29,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:00:29,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:00:29,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:00:29,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:00:29" (1/3) ... [2025-02-08 10:00:29,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bff1f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:00:29, skipping insertion in model container [2025-02-08 10:00:29,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:29" (2/3) ... [2025-02-08 10:00:29,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bff1f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:00:29, skipping insertion in model container [2025-02-08 10:00:29,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:00:29" (3/3) ... [2025-02-08 10:00:29,685 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2025-02-08 10:00:29,698 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:00:29,700 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_6-1.c that has 3 procedures, 49 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-02-08 10:00:29,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:00:29,752 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;@252a3533, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:00:29,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-02-08 10:00:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 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) [2025-02-08 10:00:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 10:00:29,759 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:29,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 10:00:29,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:29,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1081165007, now seen corresponding path program 1 times [2025-02-08 10:00:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382644720] [2025-02-08 10:00:29,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:29,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 10:00:29,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 10:00:29,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:29,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:29,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382644720] [2025-02-08 10:00:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382644720] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:29,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 10:00:29,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525130704] [2025-02-08 10:00:29,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:29,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 10:00:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:29,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 10:00:29,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:00:29,911 INFO L87 Difference]: Start difference. First operand has 49 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:29,938 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2025-02-08 10:00:29,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 10:00:29,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 10:00:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:29,944 INFO L225 Difference]: With dead ends: 54 [2025-02-08 10:00:29,944 INFO L226 Difference]: Without dead ends: 44 [2025-02-08 10:00:29,946 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 [2025-02-08 10:00:29,947 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 86 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 [2025-02-08 10:00:29,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 86 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-08 10:00:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2025-02-08 10:00:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.56) internal successors, (39), 35 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-08 10:00:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2025-02-08 10:00:29,975 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 6 [2025-02-08 10:00:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:29,976 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2025-02-08 10:00:29,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2025-02-08 10:00:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 10:00:29,977 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:29,977 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:29,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 10:00:29,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:29,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:29,981 INFO L85 PathProgramCache]: Analyzing trace with hash -843623136, now seen corresponding path program 1 times [2025-02-08 10:00:29,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:29,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040194160] [2025-02-08 10:00:29,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:29,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:29,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 10:00:29,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 10:00:29,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:29,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:30,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:30,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040194160] [2025-02-08 10:00:30,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040194160] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:30,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:30,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 10:00:30,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888826811] [2025-02-08 10:00:30,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:30,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:30,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:30,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:30,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:30,048 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:30,115 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2025-02-08 10:00:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 10:00:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:30,117 INFO L225 Difference]: With dead ends: 63 [2025-02-08 10:00:30,118 INFO L226 Difference]: Without dead ends: 57 [2025-02-08 10:00:30,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:00:30,119 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 160 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 [2025-02-08 10:00:30,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-08 10:00:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2025-02-08 10:00:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 45 states have internal predecessors, (51), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 10:00:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2025-02-08 10:00:30,128 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2025-02-08 10:00:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:30,128 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2025-02-08 10:00:30,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2025-02-08 10:00:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 10:00:30,128 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:30,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:30,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 10:00:30,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:30,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:30,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1894040316, now seen corresponding path program 1 times [2025-02-08 10:00:30,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141844435] [2025-02-08 10:00:30,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:30,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 10:00:30,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 10:00:30,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:30,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:30,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141844435] [2025-02-08 10:00:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141844435] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:30,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 10:00:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189331083] [2025-02-08 10:00:30,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:30,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 10:00:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:30,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 10:00:30,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:00:30,166 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:30,188 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2025-02-08 10:00:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 10:00:30,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-08 10:00:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:30,189 INFO L225 Difference]: With dead ends: 57 [2025-02-08 10:00:30,189 INFO L226 Difference]: Without dead ends: 55 [2025-02-08 10:00:30,189 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 [2025-02-08 10:00:30,189 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 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 [2025-02-08 10:00:30,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-08 10:00:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2025-02-08 10:00:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 43 states have internal predecessors, (49), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 10:00:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2025-02-08 10:00:30,195 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2025-02-08 10:00:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:30,196 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2025-02-08 10:00:30,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2025-02-08 10:00:30,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 10:00:30,196 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:30,196 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:30,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 10:00:30,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:30,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1414292356, now seen corresponding path program 1 times [2025-02-08 10:00:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:30,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588381090] [2025-02-08 10:00:30,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:30,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 10:00:30,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 10:00:30,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:30,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588381090] [2025-02-08 10:00:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588381090] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:30,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:30,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:00:30,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528790588] [2025-02-08 10:00:30,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:30,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:00:30,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:30,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:00:30,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:00:30,298 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:30,407 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2025-02-08 10:00:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:00:30,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 10:00:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:30,408 INFO L225 Difference]: With dead ends: 57 [2025-02-08 10:00:30,408 INFO L226 Difference]: Without dead ends: 53 [2025-02-08 10:00:30,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:00:30,409 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 51 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 96 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 [2025-02-08 10:00:30,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 96 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-08 10:00:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2025-02-08 10:00:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 10:00:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2025-02-08 10:00:30,418 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 13 [2025-02-08 10:00:30,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:30,419 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2025-02-08 10:00:30,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2025-02-08 10:00:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 10:00:30,419 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:30,419 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:30,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 10:00:30,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:30,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2051156933, now seen corresponding path program 1 times [2025-02-08 10:00:30,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:30,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838745631] [2025-02-08 10:00:30,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:30,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:30,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:00:30,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:00:30,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:30,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:00:30,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838745631] [2025-02-08 10:00:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838745631] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:30,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:30,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239812090] [2025-02-08 10:00:30,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:30,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:30,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:30,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:30,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:30,516 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:30,556 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2025-02-08 10:00:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:30,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2025-02-08 10:00:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:30,558 INFO L225 Difference]: With dead ends: 73 [2025-02-08 10:00:30,559 INFO L226 Difference]: Without dead ends: 68 [2025-02-08 10:00:30,559 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 [2025-02-08 10:00:30,560 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 144 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 [2025-02-08 10:00:30,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-08 10:00:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2025-02-08 10:00:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2025-02-08 10:00:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2025-02-08 10:00:30,567 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 22 [2025-02-08 10:00:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:30,568 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2025-02-08 10:00:30,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2025-02-08 10:00:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 10:00:30,568 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:30,569 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] [2025-02-08 10:00:30,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 10:00:30,569 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:30,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash -286356789, now seen corresponding path program 1 times [2025-02-08 10:00:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:30,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480325749] [2025-02-08 10:00:30,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:30,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:00:30,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:00:30,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:30,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 10:00:30,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:30,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480325749] [2025-02-08 10:00:30,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480325749] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:30,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339744356] [2025-02-08 10:00:30,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:30,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:30,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:30,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:30,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 10:00:30,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:00:30,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:00:30,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:30,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:30,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 10:00:30,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:30,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339744356] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:30,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:30,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-02-08 10:00:30,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644373291] [2025-02-08 10:00:30,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:30,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:00:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:30,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:00:30,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:00:30,763 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:30,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:30,851 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2025-02-08 10:00:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:00:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-08 10:00:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:30,852 INFO L225 Difference]: With dead ends: 112 [2025-02-08 10:00:30,852 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 10:00:30,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:00:30,853 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:30,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 147 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 10:00:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2025-02-08 10:00:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 46 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-08 10:00:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2025-02-08 10:00:30,866 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 23 [2025-02-08 10:00:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:30,866 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2025-02-08 10:00:30,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2025-02-08 10:00:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-08 10:00:30,866 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:30,866 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:30,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 10:00:31,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:31,067 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:31,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:31,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1517966263, now seen corresponding path program 1 times [2025-02-08 10:00:31,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:31,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12006037] [2025-02-08 10:00:31,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:31,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:31,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 10:00:31,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 10:00:31,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:31,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 10:00:31,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12006037] [2025-02-08 10:00:31,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12006037] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:31,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:31,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748895817] [2025-02-08 10:00:31,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:31,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:31,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:31,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:31,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:31,120 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:31,162 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2025-02-08 10:00:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-02-08 10:00:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:31,164 INFO L225 Difference]: With dead ends: 82 [2025-02-08 10:00:31,164 INFO L226 Difference]: Without dead ends: 77 [2025-02-08 10:00:31,164 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 [2025-02-08 10:00:31,167 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:31,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 111 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-08 10:00:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2025-02-08 10:00:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.18) internal successors, (59), 54 states have internal predecessors, (59), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2025-02-08 10:00:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2025-02-08 10:00:31,178 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 24 [2025-02-08 10:00:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:31,178 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2025-02-08 10:00:31,178 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) [2025-02-08 10:00:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2025-02-08 10:00:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 10:00:31,180 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:31,180 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] [2025-02-08 10:00:31,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 10:00:31,181 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:31,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1398651106, now seen corresponding path program 1 times [2025-02-08 10:00:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499930692] [2025-02-08 10:00:31,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:31,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 10:00:31,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 10:00:31,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:31,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 10:00:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:31,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499930692] [2025-02-08 10:00:31,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499930692] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:31,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:31,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:31,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626549660] [2025-02-08 10:00:31,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:31,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:31,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:31,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:31,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:31,245 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:31,273 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2025-02-08 10:00:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2025-02-08 10:00:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:31,274 INFO L225 Difference]: With dead ends: 82 [2025-02-08 10:00:31,274 INFO L226 Difference]: Without dead ends: 80 [2025-02-08 10:00:31,274 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 [2025-02-08 10:00:31,275 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 120 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 [2025-02-08 10:00:31,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 120 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-08 10:00:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2025-02-08 10:00:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 61 states have internal predecessors, (66), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2025-02-08 10:00:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2025-02-08 10:00:31,307 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 28 [2025-02-08 10:00:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:31,308 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2025-02-08 10:00:31,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2025-02-08 10:00:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 10:00:31,310 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:31,310 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:31,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 10:00:31,310 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:31,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1361651781, now seen corresponding path program 1 times [2025-02-08 10:00:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575381623] [2025-02-08 10:00:31,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:31,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:31,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 10:00:31,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 10:00:31,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:31,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-08 10:00:31,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:31,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575381623] [2025-02-08 10:00:31,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575381623] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:31,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011866096] [2025-02-08 10:00:31,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:31,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:31,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:31,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:31,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 10:00:31,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 10:00:31,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 10:00:31,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:31,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:31,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 10:00:31,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:00:31,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:31,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011866096] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:31,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:31,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-02-08 10:00:31,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911238149] [2025-02-08 10:00:31,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:31,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:00:31,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:31,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:00:31,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:00:31,469 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:00:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:31,542 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2025-02-08 10:00:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:00:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2025-02-08 10:00:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:31,543 INFO L225 Difference]: With dead ends: 140 [2025-02-08 10:00:31,543 INFO L226 Difference]: Without dead ends: 75 [2025-02-08 10:00:31,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:00:31,544 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 170 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 [2025-02-08 10:00:31,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 170 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-02-08 10:00:31,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2025-02-08 10:00:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 58 states have internal predecessors, (63), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2025-02-08 10:00:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2025-02-08 10:00:31,559 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 38 [2025-02-08 10:00:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:31,559 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2025-02-08 10:00:31,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:00:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2025-02-08 10:00:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 10:00:31,560 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:31,560 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] [2025-02-08 10:00:31,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:31,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:31,761 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:31,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1287366459, now seen corresponding path program 1 times [2025-02-08 10:00:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971341724] [2025-02-08 10:00:31,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:31,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 10:00:31,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 10:00:31,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:31,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 10:00:31,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:31,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971341724] [2025-02-08 10:00:31,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971341724] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:31,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953877538] [2025-02-08 10:00:31,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:31,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:31,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:31,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:31,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 10:00:31,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 10:00:31,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 10:00:31,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:31,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:31,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 10:00:31,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:31,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:00:32,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953877538] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:32,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:32,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-08 10:00:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623990017] [2025-02-08 10:00:32,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:32,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 10:00:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:32,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 10:00:32,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:00:32,083 INFO L87 Difference]: Start difference. First operand 73 states and 93 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) [2025-02-08 10:00:32,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:32,484 INFO L93 Difference]: Finished difference Result 203 states and 273 transitions. [2025-02-08 10:00:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 10:00:32,484 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 29 [2025-02-08 10:00:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:32,485 INFO L225 Difference]: With dead ends: 203 [2025-02-08 10:00:32,485 INFO L226 Difference]: Without dead ends: 138 [2025-02-08 10:00:32,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2025-02-08 10:00:32,486 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 110 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:32,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 701 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:00:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-08 10:00:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2025-02-08 10:00:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.164835164835165) internal successors, (106), 96 states have internal predecessors, (106), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (33), 17 states have call predecessors, (33), 15 states have call successors, (33) [2025-02-08 10:00:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2025-02-08 10:00:32,496 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 29 [2025-02-08 10:00:32,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:32,496 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2025-02-08 10:00:32,496 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) [2025-02-08 10:00:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2025-02-08 10:00:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-08 10:00:32,497 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:32,497 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] [2025-02-08 10:00:32,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:32,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:32,697 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:32,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:32,698 INFO L85 PathProgramCache]: Analyzing trace with hash 145489265, now seen corresponding path program 1 times [2025-02-08 10:00:32,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894193146] [2025-02-08 10:00:32,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:32,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:32,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 10:00:32,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:00:32,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:32,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:32,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:32,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894193146] [2025-02-08 10:00:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894193146] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:32,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829671694] [2025-02-08 10:00:32,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:32,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:32,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:32,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 10:00:32,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 10:00:32,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:00:32,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:32,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:32,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 10:00:32,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:32,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:00:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829671694] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:33,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2025-02-08 10:00:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449622658] [2025-02-08 10:00:33,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:33,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 10:00:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:33,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 10:00:33,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2025-02-08 10:00:33,118 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-08 10:00:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:33,480 INFO L93 Difference]: Finished difference Result 261 states and 340 transitions. [2025-02-08 10:00:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 10:00:33,480 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 47 [2025-02-08 10:00:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:33,481 INFO L225 Difference]: With dead ends: 261 [2025-02-08 10:00:33,481 INFO L226 Difference]: Without dead ends: 161 [2025-02-08 10:00:33,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 73 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2025-02-08 10:00:33,483 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 158 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:33,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 687 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:00:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-02-08 10:00:33,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 142. [2025-02-08 10:00:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 113 states have internal predecessors, (126), 19 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (40), 21 states have call predecessors, (40), 18 states have call successors, (40) [2025-02-08 10:00:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 185 transitions. [2025-02-08 10:00:33,499 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 185 transitions. Word has length 47 [2025-02-08 10:00:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:33,499 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 185 transitions. [2025-02-08 10:00:33,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-08 10:00:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 185 transitions. [2025-02-08 10:00:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-08 10:00:33,500 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:33,500 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] [2025-02-08 10:00:33,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:33,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 10:00:33,700 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:33,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1990240979, now seen corresponding path program 2 times [2025-02-08 10:00:33,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:33,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129833404] [2025-02-08 10:00:33,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:33,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:33,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-08 10:00:33,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:00:33,710 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:33,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129833404] [2025-02-08 10:00:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129833404] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416614417] [2025-02-08 10:00:33,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:33,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:33,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:33,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 10:00:33,798 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-08 10:00:33,808 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:00:33,808 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:33,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:33,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 10:00:33,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:33,837 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:33,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416614417] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:33,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:33,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-08 10:00:33,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321464385] [2025-02-08 10:00:33,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:33,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:33,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:33,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:00:33,839 INFO L87 Difference]: Start difference. First operand 142 states and 185 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:33,860 INFO L93 Difference]: Finished difference Result 152 states and 200 transitions. [2025-02-08 10:00:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:33,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2025-02-08 10:00:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:33,861 INFO L225 Difference]: With dead ends: 152 [2025-02-08 10:00:33,861 INFO L226 Difference]: Without dead ends: 151 [2025-02-08 10:00:33,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:00:33,862 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 136 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 [2025-02-08 10:00:33,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 136 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-02-08 10:00:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2025-02-08 10:00:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 116 states have internal predecessors, (132), 19 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (40), 24 states have call predecessors, (40), 18 states have call successors, (40) [2025-02-08 10:00:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 191 transitions. [2025-02-08 10:00:33,871 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 191 transitions. Word has length 47 [2025-02-08 10:00:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:33,871 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 191 transitions. [2025-02-08 10:00:33,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 191 transitions. [2025-02-08 10:00:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-08 10:00:33,872 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:33,872 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] [2025-02-08 10:00:33,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:34,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 10:00:34,073 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:34,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1567928202, now seen corresponding path program 1 times [2025-02-08 10:00:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589298782] [2025-02-08 10:00:34,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:34,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-08 10:00:34,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 10:00:34,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:34,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589298782] [2025-02-08 10:00:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589298782] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125620747] [2025-02-08 10:00:34,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:34,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:34,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:34,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:34,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 10:00:34,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-08 10:00:34,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 10:00:34,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:34,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:34,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 10:00:34,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:34,210 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125620747] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:34,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:34,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-02-08 10:00:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877883033] [2025-02-08 10:00:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:34,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:00:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:34,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:00:34,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:00:34,212 INFO L87 Difference]: Start difference. First operand 148 states and 191 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:34,232 INFO L93 Difference]: Finished difference Result 164 states and 212 transitions. [2025-02-08 10:00:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:00:34,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2025-02-08 10:00:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:34,234 INFO L225 Difference]: With dead ends: 164 [2025-02-08 10:00:34,234 INFO L226 Difference]: Without dead ends: 163 [2025-02-08 10:00:34,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:00:34,235 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:34,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 113 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-02-08 10:00:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 144. [2025-02-08 10:00:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 113 states have internal predecessors, (129), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (37), 23 states have call predecessors, (37), 17 states have call successors, (37) [2025-02-08 10:00:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2025-02-08 10:00:34,245 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 48 [2025-02-08 10:00:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:34,245 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2025-02-08 10:00:34,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2025-02-08 10:00:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-08 10:00:34,246 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:34,246 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:34,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 10:00:34,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 10:00:34,447 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:34,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash 620465333, now seen corresponding path program 2 times [2025-02-08 10:00:34,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:34,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866958821] [2025-02-08 10:00:34,447 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:34,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:34,450 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-08 10:00:34,453 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 10:00:34,453 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:34,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-08 10:00:34,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:34,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866958821] [2025-02-08 10:00:34,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866958821] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:34,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084295654] [2025-02-08 10:00:34,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:34,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:34,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:34,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:34,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 10:00:34,528 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-08 10:00:34,537 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 10:00:34,538 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:34,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:34,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 10:00:34,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-08 10:00:34,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:34,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084295654] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:34,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:34,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-08 10:00:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725284491] [2025-02-08 10:00:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:34,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:34,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:34,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:34,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:00:34,576 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:34,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:34,596 INFO L93 Difference]: Finished difference Result 152 states and 195 transitions. [2025-02-08 10:00:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:34,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2025-02-08 10:00:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:34,598 INFO L225 Difference]: With dead ends: 152 [2025-02-08 10:00:34,598 INFO L226 Difference]: Without dead ends: 151 [2025-02-08 10:00:34,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:00:34,598 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:34,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 114 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-02-08 10:00:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2025-02-08 10:00:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 116 states have (on average 1.146551724137931) internal successors, (133), 115 states have internal predecessors, (133), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (37), 25 states have call predecessors, (37), 17 states have call successors, (37) [2025-02-08 10:00:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 188 transitions. [2025-02-08 10:00:34,606 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 188 transitions. Word has length 53 [2025-02-08 10:00:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:34,606 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 188 transitions. [2025-02-08 10:00:34,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 188 transitions. [2025-02-08 10:00:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-08 10:00:34,607 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:34,607 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:34,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 10:00:34,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:34,808 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:34,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash -992024221, now seen corresponding path program 1 times [2025-02-08 10:00:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:34,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317720230] [2025-02-08 10:00:34,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:34,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:34,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 10:00:34,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 10:00:34,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:34,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-02-08 10:00:34,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317720230] [2025-02-08 10:00:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317720230] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:34,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024237353] [2025-02-08 10:00:34,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:34,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:34,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:34,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:34,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 10:00:34,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 10:00:34,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 10:00:34,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:34,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:34,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 10:00:34,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:00:35,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:00:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024237353] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:35,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:35,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 19 [2025-02-08 10:00:35,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54585950] [2025-02-08 10:00:35,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:35,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 10:00:35,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:35,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 10:00:35,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:00:35,191 INFO L87 Difference]: Start difference. First operand 148 states and 188 transitions. Second operand has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 13 states have internal predecessors, (74), 9 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-02-08 10:00:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:35,572 INFO L93 Difference]: Finished difference Result 363 states and 485 transitions. [2025-02-08 10:00:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 10:00:35,572 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 13 states have internal predecessors, (74), 9 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 63 [2025-02-08 10:00:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:35,574 INFO L225 Difference]: With dead ends: 363 [2025-02-08 10:00:35,575 INFO L226 Difference]: Without dead ends: 235 [2025-02-08 10:00:35,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 104 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2025-02-08 10:00:35,578 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 127 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:35,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 364 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:00:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-02-08 10:00:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 219. [2025-02-08 10:00:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 173 states have (on average 1.1329479768786128) internal successors, (196), 170 states have internal predecessors, (196), 27 states have call successors, (27), 11 states have call predecessors, (27), 15 states have return successors, (52), 37 states have call predecessors, (52), 26 states have call successors, (52) [2025-02-08 10:00:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 275 transitions. [2025-02-08 10:00:35,589 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 275 transitions. Word has length 63 [2025-02-08 10:00:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:35,589 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 275 transitions. [2025-02-08 10:00:35,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 13 states have internal predecessors, (74), 9 states have call successors, (16), 8 states have call predecessors, (16), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-02-08 10:00:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 275 transitions. [2025-02-08 10:00:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 10:00:35,590 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:35,590 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:35,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 10:00:35,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 10:00:35,794 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:35,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1258566660, now seen corresponding path program 1 times [2025-02-08 10:00:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018300990] [2025-02-08 10:00:35,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:35,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:00:35,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:00:35,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:35,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-02-08 10:00:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018300990] [2025-02-08 10:00:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018300990] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:35,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:35,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:35,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631130933] [2025-02-08 10:00:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:35,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:35,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:35,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:35,850 INFO L87 Difference]: Start difference. First operand 219 states and 275 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) [2025-02-08 10:00:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:35,873 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2025-02-08 10:00:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2025-02-08 10:00:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:35,875 INFO L225 Difference]: With dead ends: 229 [2025-02-08 10:00:35,875 INFO L226 Difference]: Without dead ends: 228 [2025-02-08 10:00:35,875 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 [2025-02-08 10:00:35,875 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:35,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 140 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-08 10:00:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 215. [2025-02-08 10:00:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.1352941176470588) internal successors, (193), 167 states have internal predecessors, (193), 26 states have call successors, (26), 11 states have call predecessors, (26), 15 states have return successors, (49), 36 states have call predecessors, (49), 25 states have call successors, (49) [2025-02-08 10:00:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 268 transitions. [2025-02-08 10:00:35,884 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 268 transitions. Word has length 55 [2025-02-08 10:00:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:35,884 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 268 transitions. [2025-02-08 10:00:35,884 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) [2025-02-08 10:00:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 268 transitions. [2025-02-08 10:00:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 10:00:35,885 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:35,885 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] [2025-02-08 10:00:35,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 10:00:35,885 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:35,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash 548924782, now seen corresponding path program 1 times [2025-02-08 10:00:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:35,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896472388] [2025-02-08 10:00:35,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:35,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 10:00:35,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 10:00:35,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:35,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-08 10:00:35,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896472388] [2025-02-08 10:00:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896472388] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:35,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982542300] [2025-02-08 10:00:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:35,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:35,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:35,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:35,923 INFO L87 Difference]: Start difference. First operand 215 states and 268 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) [2025-02-08 10:00:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:35,943 INFO L93 Difference]: Finished difference Result 231 states and 289 transitions. [2025-02-08 10:00:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:35,944 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 60 [2025-02-08 10:00:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:35,945 INFO L225 Difference]: With dead ends: 231 [2025-02-08 10:00:35,945 INFO L226 Difference]: Without dead ends: 230 [2025-02-08 10:00:35,945 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 [2025-02-08 10:00:35,945 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 136 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 [2025-02-08 10:00:35,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 136 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-02-08 10:00:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 213. [2025-02-08 10:00:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 169 states have (on average 1.136094674556213) internal successors, (192), 165 states have internal predecessors, (192), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (45), 36 states have call predecessors, (45), 25 states have call successors, (45) [2025-02-08 10:00:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 263 transitions. [2025-02-08 10:00:35,956 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 263 transitions. Word has length 60 [2025-02-08 10:00:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:35,956 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 263 transitions. [2025-02-08 10:00:35,956 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) [2025-02-08 10:00:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 263 transitions. [2025-02-08 10:00:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-08 10:00:35,957 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:35,957 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] [2025-02-08 10:00:35,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 10:00:35,957 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:35,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash -163200962, now seen corresponding path program 1 times [2025-02-08 10:00:35,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:35,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697614787] [2025-02-08 10:00:35,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:35,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:35,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-08 10:00:35,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 10:00:35,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:35,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-08 10:00:36,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697614787] [2025-02-08 10:00:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697614787] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:36,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41058063] [2025-02-08 10:00:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:36,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:36,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:36,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:36,007 INFO L87 Difference]: Start difference. First operand 213 states and 263 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) [2025-02-08 10:00:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:36,030 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2025-02-08 10:00:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:36,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2025-02-08 10:00:36,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:36,032 INFO L225 Difference]: With dead ends: 231 [2025-02-08 10:00:36,032 INFO L226 Difference]: Without dead ends: 230 [2025-02-08 10:00:36,033 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 [2025-02-08 10:00:36,033 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:36,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-02-08 10:00:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 223. [2025-02-08 10:00:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 177 states have (on average 1.1299435028248588) internal successors, (200), 173 states have internal predecessors, (200), 26 states have call successors, (26), 11 states have call predecessors, (26), 16 states have return successors, (50), 38 states have call predecessors, (50), 25 states have call successors, (50) [2025-02-08 10:00:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 276 transitions. [2025-02-08 10:00:36,043 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 276 transitions. Word has length 61 [2025-02-08 10:00:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:36,043 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 276 transitions. [2025-02-08 10:00:36,043 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) [2025-02-08 10:00:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 276 transitions. [2025-02-08 10:00:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 10:00:36,044 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:36,044 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] [2025-02-08 10:00:36,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 10:00:36,044 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:36,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:36,045 INFO L85 PathProgramCache]: Analyzing trace with hash -797711159, now seen corresponding path program 1 times [2025-02-08 10:00:36,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:36,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551807927] [2025-02-08 10:00:36,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:36,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:36,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 10:00:36,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 10:00:36,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:36,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-08 10:00:36,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551807927] [2025-02-08 10:00:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551807927] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730190027] [2025-02-08 10:00:36,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:36,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:36,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:36,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:36,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 10:00:36,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 10:00:36,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 10:00:36,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:36,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:36,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 10:00:36,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-02-08 10:00:36,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:36,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730190027] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:36,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:36,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2025-02-08 10:00:36,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276640759] [2025-02-08 10:00:36,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:36,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:00:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:36,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:00:36,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:00:36,251 INFO L87 Difference]: Start difference. First operand 223 states and 276 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-08 10:00:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:36,304 INFO L93 Difference]: Finished difference Result 289 states and 373 transitions. [2025-02-08 10:00:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:00:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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 62 [2025-02-08 10:00:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:36,306 INFO L225 Difference]: With dead ends: 289 [2025-02-08 10:00:36,306 INFO L226 Difference]: Without dead ends: 288 [2025-02-08 10:00:36,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:00:36,307 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:36,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 229 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-02-08 10:00:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 251. [2025-02-08 10:00:36,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 199 states have (on average 1.1306532663316582) internal successors, (225), 194 states have internal predecessors, (225), 28 states have call successors, (28), 11 states have call predecessors, (28), 20 states have return successors, (66), 45 states have call predecessors, (66), 27 states have call successors, (66) [2025-02-08 10:00:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 319 transitions. [2025-02-08 10:00:36,321 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 319 transitions. Word has length 62 [2025-02-08 10:00:36,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:36,322 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 319 transitions. [2025-02-08 10:00:36,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-08 10:00:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 319 transitions. [2025-02-08 10:00:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 10:00:36,323 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:36,323 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:36,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:36,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:36,528 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:36,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:36,529 INFO L85 PathProgramCache]: Analyzing trace with hash 813569526, now seen corresponding path program 1 times [2025-02-08 10:00:36,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:36,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336122516] [2025-02-08 10:00:36,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:36,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:36,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 10:00:36,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 10:00:36,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:36,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-02-08 10:00:36,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336122516] [2025-02-08 10:00:36,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336122516] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111366790] [2025-02-08 10:00:36,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:36,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:36,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:36,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:36,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 10:00:36,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 10:00:36,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 10:00:36,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:36,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:36,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 10:00:36,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:00:36,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111366790] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:36,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:36,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 20 [2025-02-08 10:00:36,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631838785] [2025-02-08 10:00:36,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:36,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 10:00:36,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:36,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 10:00:36,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2025-02-08 10:00:36,777 INFO L87 Difference]: Start difference. First operand 251 states and 319 transitions. Second operand has 17 states, 16 states have (on average 3.625) internal successors, (58), 9 states have internal predecessors, (58), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-08 10:00:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:37,044 INFO L93 Difference]: Finished difference Result 483 states and 632 transitions. [2025-02-08 10:00:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 10:00:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 9 states have internal predecessors, (58), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 83 [2025-02-08 10:00:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:37,046 INFO L225 Difference]: With dead ends: 483 [2025-02-08 10:00:37,046 INFO L226 Difference]: Without dead ends: 279 [2025-02-08 10:00:37,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2025-02-08 10:00:37,048 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 196 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:37,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 280 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2025-02-08 10:00:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 274. [2025-02-08 10:00:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 216 states have (on average 1.1296296296296295) internal successors, (244), 213 states have internal predecessors, (244), 30 states have call successors, (30), 13 states have call predecessors, (30), 24 states have return successors, (68), 47 states have call predecessors, (68), 29 states have call successors, (68) [2025-02-08 10:00:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 342 transitions. [2025-02-08 10:00:37,066 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 342 transitions. Word has length 83 [2025-02-08 10:00:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:37,066 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 342 transitions. [2025-02-08 10:00:37,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 9 states have internal predecessors, (58), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-08 10:00:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 342 transitions. [2025-02-08 10:00:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 10:00:37,067 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:37,067 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] [2025-02-08 10:00:37,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:37,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:37,271 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:37,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1597661208, now seen corresponding path program 1 times [2025-02-08 10:00:37,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:37,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209671054] [2025-02-08 10:00:37,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:37,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 10:00:37,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 10:00:37,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:37,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-08 10:00:37,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:37,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209671054] [2025-02-08 10:00:37,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209671054] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:37,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:37,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48978389] [2025-02-08 10:00:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:37,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:37,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:37,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:37,324 INFO L87 Difference]: Start difference. First operand 274 states and 342 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) [2025-02-08 10:00:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:37,360 INFO L93 Difference]: Finished difference Result 283 states and 352 transitions. [2025-02-08 10:00:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:37,361 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 [2025-02-08 10:00:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:37,363 INFO L225 Difference]: With dead ends: 283 [2025-02-08 10:00:37,363 INFO L226 Difference]: Without dead ends: 282 [2025-02-08 10:00:37,363 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 [2025-02-08 10:00:37,364 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:37,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2025-02-08 10:00:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2025-02-08 10:00:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 216 states have (on average 1.1203703703703705) internal successors, (242), 213 states have internal predecessors, (242), 30 states have call successors, (30), 13 states have call predecessors, (30), 24 states have return successors, (68), 47 states have call predecessors, (68), 29 states have call successors, (68) [2025-02-08 10:00:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2025-02-08 10:00:37,386 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 66 [2025-02-08 10:00:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:37,386 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2025-02-08 10:00:37,386 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) [2025-02-08 10:00:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2025-02-08 10:00:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-08 10:00:37,387 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:37,388 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] [2025-02-08 10:00:37,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 10:00:37,388 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:37,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash -217374484, now seen corresponding path program 1 times [2025-02-08 10:00:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:37,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214631596] [2025-02-08 10:00:37,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:37,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:37,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 10:00:37,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 10:00:37,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:37,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-08 10:00:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:37,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214631596] [2025-02-08 10:00:37,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214631596] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422345188] [2025-02-08 10:00:37,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:37,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:37,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:37,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 10:00:37,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-08 10:00:37,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-08 10:00:37,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:37,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:37,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 10:00:37,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 10:00:37,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-08 10:00:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422345188] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:37,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2025-02-08 10:00:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530430341] [2025-02-08 10:00:37,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:37,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 10:00:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:37,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 10:00:37,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:00:37,832 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 12 states have internal predecessors, (68), 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) [2025-02-08 10:00:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:38,092 INFO L93 Difference]: Finished difference Result 510 states and 632 transitions. [2025-02-08 10:00:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:00:38,093 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 12 states have internal predecessors, (68), 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 75 [2025-02-08 10:00:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:38,095 INFO L225 Difference]: With dead ends: 510 [2025-02-08 10:00:38,095 INFO L226 Difference]: Without dead ends: 294 [2025-02-08 10:00:38,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 143 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:00:38,098 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 111 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:38,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 381 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-02-08 10:00:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 272. [2025-02-08 10:00:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 215 states have (on average 1.1162790697674418) internal successors, (240), 211 states have internal predecessors, (240), 30 states have call successors, (30), 13 states have call predecessors, (30), 23 states have return successors, (64), 47 states have call predecessors, (64), 29 states have call successors, (64) [2025-02-08 10:00:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 334 transitions. [2025-02-08 10:00:38,123 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 334 transitions. Word has length 75 [2025-02-08 10:00:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:38,124 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 334 transitions. [2025-02-08 10:00:38,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 12 states have internal predecessors, (68), 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) [2025-02-08 10:00:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 334 transitions. [2025-02-08 10:00:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 10:00:38,124 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:38,124 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] [2025-02-08 10:00:38,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 10:00:38,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-02-08 10:00:38,325 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:38,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash 164427319, now seen corresponding path program 1 times [2025-02-08 10:00:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:38,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142706544] [2025-02-08 10:00:38,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:38,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 10:00:38,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 10:00:38,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:38,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 10:00:38,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:38,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142706544] [2025-02-08 10:00:38,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142706544] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:38,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146301075] [2025-02-08 10:00:38,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:38,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:38,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:38,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:38,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 10:00:38,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 10:00:38,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 10:00:38,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:38,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:38,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 10:00:38,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 10:00:38,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 10:00:38,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146301075] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:38,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:38,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2025-02-08 10:00:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086265814] [2025-02-08 10:00:38,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:38,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 10:00:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:38,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 10:00:38,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:00:38,571 INFO L87 Difference]: Start difference. First operand 272 states and 334 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 9 states have internal predecessors, (56), 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) [2025-02-08 10:00:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:38,724 INFO L93 Difference]: Finished difference Result 472 states and 574 transitions. [2025-02-08 10:00:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 10:00:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 9 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2025-02-08 10:00:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:38,726 INFO L225 Difference]: With dead ends: 472 [2025-02-08 10:00:38,726 INFO L226 Difference]: Without dead ends: 276 [2025-02-08 10:00:38,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 146 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:00:38,727 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 89 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:38,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 384 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2025-02-08 10:00:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2025-02-08 10:00:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 213 states have (on average 1.1173708920187793) internal successors, (238), 210 states have internal predecessors, (238), 30 states have call successors, (30), 13 states have call predecessors, (30), 23 states have return successors, (63), 46 states have call predecessors, (63), 29 states have call successors, (63) [2025-02-08 10:00:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 331 transitions. [2025-02-08 10:00:38,738 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 331 transitions. Word has length 76 [2025-02-08 10:00:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:38,738 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 331 transitions. [2025-02-08 10:00:38,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 9 states have internal predecessors, (56), 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) [2025-02-08 10:00:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 331 transitions. [2025-02-08 10:00:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-08 10:00:38,739 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:38,739 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] [2025-02-08 10:00:38,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:38,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:38,943 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:38,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2037566543, now seen corresponding path program 1 times [2025-02-08 10:00:38,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:38,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578924084] [2025-02-08 10:00:38,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:38,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:38,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-08 10:00:38,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 10:00:38,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:38,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-08 10:00:39,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:39,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578924084] [2025-02-08 10:00:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578924084] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90383483] [2025-02-08 10:00:39,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:39,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:39,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:39,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:39,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 10:00:39,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-08 10:00:39,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 10:00:39,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:39,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:39,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 10:00:39,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 10:00:39,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-08 10:00:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90383483] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:39,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:39,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 7] total 27 [2025-02-08 10:00:39,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761258279] [2025-02-08 10:00:39,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:39,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-08 10:00:39,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:39,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-08 10:00:39,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2025-02-08 10:00:39,394 INFO L87 Difference]: Start difference. First operand 270 states and 331 transitions. Second operand has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 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) [2025-02-08 10:00:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:40,079 INFO L93 Difference]: Finished difference Result 535 states and 685 transitions. [2025-02-08 10:00:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 10:00:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 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 79 [2025-02-08 10:00:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:40,081 INFO L225 Difference]: With dead ends: 535 [2025-02-08 10:00:40,081 INFO L226 Difference]: Without dead ends: 327 [2025-02-08 10:00:40,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=364, Invalid=2392, Unknown=0, NotChecked=0, Total=2756 [2025-02-08 10:00:40,083 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 196 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:40,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 302 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:00:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2025-02-08 10:00:40,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 269. [2025-02-08 10:00:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 210 states have (on average 1.0952380952380953) internal successors, (230), 212 states have internal predecessors, (230), 31 states have call successors, (31), 13 states have call predecessors, (31), 24 states have return successors, (60), 43 states have call predecessors, (60), 30 states have call successors, (60) [2025-02-08 10:00:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 321 transitions. [2025-02-08 10:00:40,095 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 321 transitions. Word has length 79 [2025-02-08 10:00:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:40,095 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 321 transitions. [2025-02-08 10:00:40,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 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) [2025-02-08 10:00:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 321 transitions. [2025-02-08 10:00:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-08 10:00:40,096 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:40,096 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] [2025-02-08 10:00:40,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:40,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:40,297 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:40,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:40,297 INFO L85 PathProgramCache]: Analyzing trace with hash -420089621, now seen corresponding path program 1 times [2025-02-08 10:00:40,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:40,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076445201] [2025-02-08 10:00:40,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:40,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:40,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-08 10:00:40,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 10:00:40,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:40,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:00:40,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:40,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076445201] [2025-02-08 10:00:40,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076445201] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:40,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083848799] [2025-02-08 10:00:40,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:40,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:40,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:40,456 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:40,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 10:00:40,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-08 10:00:40,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 10:00:40,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:40,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:40,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 10:00:40,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-08 10:00:40,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-08 10:00:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083848799] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:40,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:40,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 32 [2025-02-08 10:00:40,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113831826] [2025-02-08 10:00:40,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:40,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 10:00:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:40,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 10:00:40,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2025-02-08 10:00:40,943 INFO L87 Difference]: Start difference. First operand 269 states and 321 transitions. Second operand has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 28 states have internal predecessors, (106), 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) [2025-02-08 10:00:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:42,122 INFO L93 Difference]: Finished difference Result 631 states and 843 transitions. [2025-02-08 10:00:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-08 10:00:42,123 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 28 states have internal predecessors, (106), 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 80 [2025-02-08 10:00:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:42,125 INFO L225 Difference]: With dead ends: 631 [2025-02-08 10:00:42,125 INFO L226 Difference]: Without dead ends: 385 [2025-02-08 10:00:42,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 155 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=779, Invalid=5227, Unknown=0, NotChecked=0, Total=6006 [2025-02-08 10:00:42,128 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 235 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:42,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 430 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 10:00:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-02-08 10:00:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 293. [2025-02-08 10:00:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 230 states have (on average 1.0956521739130434) internal successors, (252), 228 states have internal predecessors, (252), 33 states have call successors, (33), 12 states have call predecessors, (33), 26 states have return successors, (102), 52 states have call predecessors, (102), 32 states have call successors, (102) [2025-02-08 10:00:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 387 transitions. [2025-02-08 10:00:42,168 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 387 transitions. Word has length 80 [2025-02-08 10:00:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:42,168 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 387 transitions. [2025-02-08 10:00:42,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 28 states have internal predecessors, (106), 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) [2025-02-08 10:00:42,168 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 387 transitions. [2025-02-08 10:00:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-08 10:00:42,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:42,170 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] [2025-02-08 10:00:42,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:42,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 10:00:42,373 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:42,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1512622122, now seen corresponding path program 1 times [2025-02-08 10:00:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:42,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269802507] [2025-02-08 10:00:42,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:42,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:42,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-08 10:00:42,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-08 10:00:42,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:42,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-08 10:00:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:42,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269802507] [2025-02-08 10:00:42,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269802507] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:42,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642881279] [2025-02-08 10:00:42,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:42,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:42,420 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:42,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 10:00:42,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-08 10:00:42,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-08 10:00:42,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:42,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:42,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 10:00:42,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-08 10:00:42,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-08 10:00:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642881279] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:42,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:42,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 17 [2025-02-08 10:00:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372534443] [2025-02-08 10:00:42,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:42,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 10:00:42,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:42,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 10:00:42,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:00:42,729 INFO L87 Difference]: Start difference. First operand 293 states and 387 transitions. Second operand has 17 states, 16 states have (on average 5.1875) internal successors, (83), 14 states have internal predecessors, (83), 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) [2025-02-08 10:00:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:42,896 INFO L93 Difference]: Finished difference Result 538 states and 753 transitions. [2025-02-08 10:00:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 10:00:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.1875) internal successors, (83), 14 states have internal predecessors, (83), 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 93 [2025-02-08 10:00:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:42,898 INFO L225 Difference]: With dead ends: 538 [2025-02-08 10:00:42,898 INFO L226 Difference]: Without dead ends: 299 [2025-02-08 10:00:42,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-02-08 10:00:42,900 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 133 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:42,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 360 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-02-08 10:00:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2025-02-08 10:00:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 230 states have (on average 1.0956521739130434) internal successors, (252), 228 states have internal predecessors, (252), 33 states have call successors, (33), 12 states have call predecessors, (33), 26 states have return successors, (101), 52 states have call predecessors, (101), 32 states have call successors, (101) [2025-02-08 10:00:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 386 transitions. [2025-02-08 10:00:42,913 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 386 transitions. Word has length 93 [2025-02-08 10:00:42,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:42,914 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 386 transitions. [2025-02-08 10:00:42,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.1875) internal successors, (83), 14 states have internal predecessors, (83), 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) [2025-02-08 10:00:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 386 transitions. [2025-02-08 10:00:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-08 10:00:42,915 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:42,915 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] [2025-02-08 10:00:42,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:43,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-08 10:00:43,117 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:43,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 312887371, now seen corresponding path program 2 times [2025-02-08 10:00:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:43,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790288501] [2025-02-08 10:00:43,117 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:43,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:43,120 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-02-08 10:00:43,124 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-02-08 10:00:43,124 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:43,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-02-08 10:00:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790288501] [2025-02-08 10:00:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790288501] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638902859] [2025-02-08 10:00:43,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:43,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:43,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:43,300 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:43,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 10:00:43,324 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-02-08 10:00:43,338 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-02-08 10:00:43,338 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:43,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:43,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 10:00:43,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-02-08 10:00:43,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-02-08 10:00:43,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638902859] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:43,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:43,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-02-08 10:00:43,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752368526] [2025-02-08 10:00:43,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:43,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-08 10:00:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:43,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-08 10:00:43,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2025-02-08 10:00:43,814 INFO L87 Difference]: Start difference. First operand 293 states and 386 transitions. Second operand has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 35 states have internal predecessors, (94), 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) [2025-02-08 10:00:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:44,236 INFO L93 Difference]: Finished difference Result 542 states and 782 transitions. [2025-02-08 10:00:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-08 10:00:44,237 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 35 states have internal predecessors, (94), 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 94 [2025-02-08 10:00:44,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:44,239 INFO L225 Difference]: With dead ends: 542 [2025-02-08 10:00:44,239 INFO L226 Difference]: Without dead ends: 539 [2025-02-08 10:00:44,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 164 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=2568, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 10:00:44,241 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 40 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:44,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 490 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-02-08 10:00:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 342. [2025-02-08 10:00:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 267 states have (on average 1.0711610486891385) internal successors, (286), 268 states have internal predecessors, (286), 39 states have call successors, (39), 12 states have call predecessors, (39), 32 states have return successors, (157), 61 states have call predecessors, (157), 38 states have call successors, (157) [2025-02-08 10:00:44,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 482 transitions. [2025-02-08 10:00:44,259 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 482 transitions. Word has length 94 [2025-02-08 10:00:44,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:44,259 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 482 transitions. [2025-02-08 10:00:44,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 35 states have internal predecessors, (94), 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) [2025-02-08 10:00:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 482 transitions. [2025-02-08 10:00:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-08 10:00:44,260 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:44,260 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] [2025-02-08 10:00:44,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 10:00:44,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:44,461 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:44,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1109573912, now seen corresponding path program 1 times [2025-02-08 10:00:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438216198] [2025-02-08 10:00:44,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:44,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:44,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 10:00:44,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 10:00:44,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:44,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-02-08 10:00:44,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:44,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438216198] [2025-02-08 10:00:44,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438216198] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:44,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550602997] [2025-02-08 10:00:44,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:44,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:44,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:44,643 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:44,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 10:00:44,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 10:00:44,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 10:00:44,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:44,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:44,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 10:00:44,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-02-08 10:00:44,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-02-08 10:00:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550602997] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:45,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:45,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2025-02-08 10:00:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723126401] [2025-02-08 10:00:45,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:45,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-08 10:00:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:45,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-08 10:00:45,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 10:00:45,158 INFO L87 Difference]: Start difference. First operand 342 states and 482 transitions. Second operand has 34 states, 33 states have (on average 2.787878787878788) internal successors, (92), 34 states have internal predecessors, (92), 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) [2025-02-08 10:00:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:45,357 INFO L93 Difference]: Finished difference Result 464 states and 633 transitions. [2025-02-08 10:00:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 10:00:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.787878787878788) internal successors, (92), 34 states have internal predecessors, (92), 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 95 [2025-02-08 10:00:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:45,359 INFO L225 Difference]: With dead ends: 464 [2025-02-08 10:00:45,359 INFO L226 Difference]: Without dead ends: 462 [2025-02-08 10:00:45,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2025-02-08 10:00:45,360 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:45,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 486 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2025-02-08 10:00:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 334. [2025-02-08 10:00:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 261 states have (on average 1.049808429118774) internal successors, (274), 262 states have internal predecessors, (274), 37 states have call successors, (37), 12 states have call predecessors, (37), 32 states have return successors, (145), 59 states have call predecessors, (145), 36 states have call successors, (145) [2025-02-08 10:00:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 456 transitions. [2025-02-08 10:00:45,386 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 456 transitions. Word has length 95 [2025-02-08 10:00:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:45,386 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 456 transitions. [2025-02-08 10:00:45,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.787878787878788) internal successors, (92), 34 states have internal predecessors, (92), 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) [2025-02-08 10:00:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 456 transitions. [2025-02-08 10:00:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-08 10:00:45,388 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:45,388 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 10:00:45,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 10:00:45,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 10:00:45,592 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:45,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1478406079, now seen corresponding path program 1 times [2025-02-08 10:00:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:45,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713226731] [2025-02-08 10:00:45,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:45,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-08 10:00:45,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-08 10:00:45,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:45,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 68 proven. 53 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-02-08 10:00:45,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713226731] [2025-02-08 10:00:45,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713226731] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599996090] [2025-02-08 10:00:45,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:45,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:45,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:45,684 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:45,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 10:00:45,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-02-08 10:00:45,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-02-08 10:00:45,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:45,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:45,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 10:00:45,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 68 proven. 53 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-02-08 10:00:45,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 68 proven. 53 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-02-08 10:00:45,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599996090] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:45,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:45,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2025-02-08 10:00:45,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708615807] [2025-02-08 10:00:45,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:45,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:00:45,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:45,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:00:45,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:00:45,963 INFO L87 Difference]: Start difference. First operand 334 states and 456 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-08 10:00:46,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:46,111 INFO L93 Difference]: Finished difference Result 638 states and 903 transitions. [2025-02-08 10:00:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 10:00:46,112 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 129 [2025-02-08 10:00:46,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:46,115 INFO L225 Difference]: With dead ends: 638 [2025-02-08 10:00:46,115 INFO L226 Difference]: Without dead ends: 381 [2025-02-08 10:00:46,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 251 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2025-02-08 10:00:46,117 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 72 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:46,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 245 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2025-02-08 10:00:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 353. [2025-02-08 10:00:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 276 states have (on average 1.0471014492753623) internal successors, (289), 277 states have internal predecessors, (289), 38 states have call successors, (38), 12 states have call predecessors, (38), 35 states have return successors, (154), 63 states have call predecessors, (154), 37 states have call successors, (154) [2025-02-08 10:00:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 481 transitions. [2025-02-08 10:00:46,136 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 481 transitions. Word has length 129 [2025-02-08 10:00:46,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:46,136 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 481 transitions. [2025-02-08 10:00:46,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-08 10:00:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 481 transitions. [2025-02-08 10:00:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-08 10:00:46,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:46,138 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2025-02-08 10:00:46,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 10:00:46,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-08 10:00:46,342 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:46,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash 948124665, now seen corresponding path program 2 times [2025-02-08 10:00:46,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:46,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960254773] [2025-02-08 10:00:46,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:46,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 166 statements into 2 equivalence classes. [2025-02-08 10:00:46,353 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 166 of 166 statements. [2025-02-08 10:00:46,353 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:46,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 85 proven. 144 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2025-02-08 10:00:46,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:46,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960254773] [2025-02-08 10:00:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960254773] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:46,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429453621] [2025-02-08 10:00:46,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:46,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:46,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:46,523 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:46,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 10:00:46,563 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 166 statements into 2 equivalence classes. [2025-02-08 10:00:46,587 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 166 of 166 statements. [2025-02-08 10:00:46,587 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:46,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:46,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 10:00:46,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 134 proven. 74 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-02-08 10:00:46,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 134 proven. 75 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2025-02-08 10:00:46,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429453621] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:46,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:46,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 20 [2025-02-08 10:00:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916138034] [2025-02-08 10:00:46,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:46,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 10:00:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:46,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 10:00:46,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2025-02-08 10:00:46,979 INFO L87 Difference]: Start difference. First operand 353 states and 481 transitions. Second operand has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 18 states have internal predecessors, (112), 12 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (21), 11 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-08 10:00:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:47,138 INFO L93 Difference]: Finished difference Result 696 states and 991 transitions. [2025-02-08 10:00:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 10:00:47,139 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 18 states have internal predecessors, (112), 12 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (21), 11 states have call predecessors, (21), 10 states have call successors, (21) Word has length 166 [2025-02-08 10:00:47,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:47,140 INFO L225 Difference]: With dead ends: 696 [2025-02-08 10:00:47,140 INFO L226 Difference]: Without dead ends: 311 [2025-02-08 10:00:47,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 321 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2025-02-08 10:00:47,143 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 86 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:47,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 242 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2025-02-08 10:00:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 223. [2025-02-08 10:00:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 174 states have (on average 1.0459770114942528) internal successors, (182), 178 states have internal predecessors, (182), 25 states have call successors, (25), 12 states have call predecessors, (25), 22 states have return successors, (47), 32 states have call predecessors, (47), 24 states have call successors, (47) [2025-02-08 10:00:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 254 transitions. [2025-02-08 10:00:47,153 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 254 transitions. Word has length 166 [2025-02-08 10:00:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:47,154 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 254 transitions. [2025-02-08 10:00:47,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 18 states have internal predecessors, (112), 12 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (21), 11 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-08 10:00:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 254 transitions. [2025-02-08 10:00:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-08 10:00:47,155 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:47,155 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] [2025-02-08 10:00:47,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 10:00:47,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:47,359 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:47,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash -839352262, now seen corresponding path program 3 times [2025-02-08 10:00:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:47,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073426119] [2025-02-08 10:00:47,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 10:00:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:47,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 148 statements into 7 equivalence classes. [2025-02-08 10:00:47,376 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 148 of 148 statements. [2025-02-08 10:00:47,376 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 10:00:47,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-02-08 10:00:47,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073426119] [2025-02-08 10:00:47,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073426119] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534224918] [2025-02-08 10:00:47,758 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 10:00:47,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:47,760 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:47,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 10:00:47,808 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 148 statements into 7 equivalence classes. [2025-02-08 10:00:47,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 148 of 148 statements. [2025-02-08 10:00:47,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 10:00:47,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:47,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 10:00:47,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-08 10:00:48,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2025-02-08 10:00:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534224918] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:48,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2025-02-08 10:00:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977266754] [2025-02-08 10:00:48,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:48,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-08 10:00:48,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:48,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-08 10:00:48,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2025-02-08 10:00:48,943 INFO L87 Difference]: Start difference. First operand 223 states and 254 transitions. Second operand has 45 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 45 states have internal predecessors, (119), 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) [2025-02-08 10:00:49,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:49,166 INFO L93 Difference]: Finished difference Result 304 states and 347 transitions. [2025-02-08 10:00:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 10:00:49,167 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 45 states have internal predecessors, (119), 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 148 [2025-02-08 10:00:49,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:49,169 INFO L225 Difference]: With dead ends: 304 [2025-02-08 10:00:49,169 INFO L226 Difference]: Without dead ends: 285 [2025-02-08 10:00:49,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 267 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=355, Invalid=2297, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 10:00:49,171 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:49,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 343 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2025-02-08 10:00:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 216. [2025-02-08 10:00:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 168 states have (on average 1.0357142857142858) internal successors, (174), 173 states have internal predecessors, (174), 25 states have call successors, (25), 12 states have call predecessors, (25), 22 states have return successors, (46), 30 states have call predecessors, (46), 24 states have call successors, (46) [2025-02-08 10:00:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 245 transitions. [2025-02-08 10:00:49,190 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 245 transitions. Word has length 148 [2025-02-08 10:00:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:49,190 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 245 transitions. [2025-02-08 10:00:49,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 45 states have internal predecessors, (119), 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) [2025-02-08 10:00:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 245 transitions. [2025-02-08 10:00:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2025-02-08 10:00:49,192 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:49,192 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1] [2025-02-08 10:00:49,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:49,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:49,392 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:49,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash 343747727, now seen corresponding path program 2 times [2025-02-08 10:00:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151933223] [2025-02-08 10:00:49,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:49,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 220 statements into 2 equivalence classes. [2025-02-08 10:00:49,412 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 220 of 220 statements. [2025-02-08 10:00:49,412 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:49,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 142 proven. 56 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2025-02-08 10:00:49,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151933223] [2025-02-08 10:00:49,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151933223] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096003599] [2025-02-08 10:00:49,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:49,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:49,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:49,508 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:49,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 10:00:49,556 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 220 statements into 2 equivalence classes. [2025-02-08 10:00:49,588 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 220 of 220 statements. [2025-02-08 10:00:49,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:49,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:49,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 10:00:49,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 475 proven. 58 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2025-02-08 10:00:49,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 109 proven. 143 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2025-02-08 10:00:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096003599] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:50,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:50,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 16 [2025-02-08 10:00:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894044915] [2025-02-08 10:00:50,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:50,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 10:00:50,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:50,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 10:00:50,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-02-08 10:00:50,032 INFO L87 Difference]: Start difference. First operand 216 states and 245 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) [2025-02-08 10:00:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:50,279 INFO L93 Difference]: Finished difference Result 446 states and 513 transitions. [2025-02-08 10:00:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 10:00:50,280 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 220 [2025-02-08 10:00:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:50,281 INFO L225 Difference]: With dead ends: 446 [2025-02-08 10:00:50,281 INFO L226 Difference]: Without dead ends: 218 [2025-02-08 10:00:50,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 428 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2025-02-08 10:00:50,283 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 93 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:50,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 283 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-02-08 10:00:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 188. [2025-02-08 10:00:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 151 states have internal predecessors, (151), 23 states have call successors, (23), 12 states have call predecessors, (23), 18 states have return successors, (34), 24 states have call predecessors, (34), 22 states have call successors, (34) [2025-02-08 10:00:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 208 transitions. [2025-02-08 10:00:50,296 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 208 transitions. Word has length 220 [2025-02-08 10:00:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:50,296 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 208 transitions. [2025-02-08 10:00:50,296 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) [2025-02-08 10:00:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 208 transitions. [2025-02-08 10:00:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2025-02-08 10:00:50,298 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:50,298 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] [2025-02-08 10:00:50,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:50,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-08 10:00:50,499 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:50,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1691305109, now seen corresponding path program 3 times [2025-02-08 10:00:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142064508] [2025-02-08 10:00:50,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 10:00:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:50,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 240 statements into 9 equivalence classes. [2025-02-08 10:00:50,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 240 of 240 statements. [2025-02-08 10:00:50,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-08 10:00:50,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 149 proven. 248 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2025-02-08 10:00:51,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142064508] [2025-02-08 10:00:51,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142064508] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047126279] [2025-02-08 10:00:51,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 10:00:51,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:51,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:51,173 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:51,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 10:00:51,225 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 240 statements into 9 equivalence classes. [2025-02-08 10:00:51,263 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 240 of 240 statements. [2025-02-08 10:00:51,263 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-08 10:00:51,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:51,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-08 10:00:51,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2025-02-08 10:00:51,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2025-02-08 10:00:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047126279] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:53,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 29] total 56 [2025-02-08 10:00:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050925653] [2025-02-08 10:00:53,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:53,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-08 10:00:53,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:53,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-08 10:00:53,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2797, Unknown=0, NotChecked=0, Total=3192 [2025-02-08 10:00:53,588 INFO L87 Difference]: Start difference. First operand 188 states and 208 transitions. Second operand has 57 states, 56 states have (on average 2.6607142857142856) internal successors, (149), 57 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2025-02-08 10:00:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:53,763 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2025-02-08 10:00:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 10:00:53,763 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.6607142857142856) internal successors, (149), 57 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) Word has length 240 [2025-02-08 10:00:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:53,764 INFO L225 Difference]: With dead ends: 250 [2025-02-08 10:00:53,764 INFO L226 Difference]: Without dead ends: 0 [2025-02-08 10:00:53,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 445 SyntacticMatches, 27 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2954 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=462, Invalid=3198, Unknown=0, NotChecked=0, Total=3660 [2025-02-08 10:00:53,767 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:53,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 626 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:53,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-08 10:00:53,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-08 10:00:53,767 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) [2025-02-08 10:00:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-08 10:00:53,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 240 [2025-02-08 10:00:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:53,768 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 10:00:53,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.6607142857142856) internal successors, (149), 57 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2025-02-08 10:00:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-08 10:00:53,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-08 10:00:53,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-02-08 10:00:53,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-02-08 10:00:53,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-02-08 10:00:53,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-02-08 10:00:53,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 10:00:53,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-08 10:00:53,974 INFO L422 BasicCegarLoop]: Path program histogram: [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] [2025-02-08 10:00:53,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-08 10:00:59,838 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 10:00:59,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 10:00:59 BoogieIcfgContainer [2025-02-08 10:00:59,842 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 10:00:59,843 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 10:00:59,843 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 10:00:59,843 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 10:00:59,843 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:00:29" (3/4) ... [2025-02-08 10:00:59,845 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 10:00:59,852 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo2 [2025-02-08 10:00:59,853 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo1 [2025-02-08 10:00:59,855 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-08 10:00:59,855 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 10:00:59,855 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 10:00:59,855 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 10:00:59,908 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 10:00:59,908 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 10:00:59,908 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 10:00:59,909 INFO L158 Benchmark]: Toolchain (without parser) took 30689.74ms. Allocated memory was 142.6MB in the beginning and 855.6MB in the end (delta: 713.0MB). Free memory was 104.9MB in the beginning and 418.6MB in the end (delta: -313.7MB). Peak memory consumption was 398.9MB. Max. memory is 16.1GB. [2025-02-08 10:00:59,909 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory was 128.4MB in the beginning and 128.1MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:00:59,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.80ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 93.9MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:00:59,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.27ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:00:59,909 INFO L158 Benchmark]: Boogie Preprocessor took 31.44ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 92.2MB in the end (delta: 553.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:00:59,909 INFO L158 Benchmark]: IcfgBuilder took 252.26ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 79.3MB in the end (delta: 12.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 10:00:59,909 INFO L158 Benchmark]: TraceAbstraction took 30163.35ms. Allocated memory was 142.6MB in the beginning and 855.6MB in the end (delta: 713.0MB). Free memory was 78.2MB in the beginning and 423.1MB in the end (delta: -344.9MB). Peak memory consumption was 487.1MB. Max. memory is 16.1GB. [2025-02-08 10:00:59,909 INFO L158 Benchmark]: Witness Printer took 65.63ms. Allocated memory is still 855.6MB. Free memory was 423.1MB in the beginning and 418.6MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:00:59,911 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory was 128.4MB in the beginning and 128.1MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.80ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 93.9MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.27ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.44ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 92.2MB in the end (delta: 553.8kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 252.26ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 79.3MB in the end (delta: 12.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 30163.35ms. Allocated memory was 142.6MB in the beginning and 855.6MB in the end (delta: 713.0MB). Free memory was 78.2MB in the beginning and 423.1MB in the end (delta: -344.9MB). Peak memory consumption was 487.1MB. Max. memory is 16.1GB. * Witness Printer took 65.63ms. Allocated memory is still 855.6MB. Free memory was 423.1MB in the beginning and 418.6MB in the end (delta: 4.5MB). 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, 49 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 24.2s, OverallIterations: 33, TraceHistogramMax: 13, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1990 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1886 mSDsluCounter, 8788 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7543 mSDsCounter, 579 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9215 IncrementalHoareTripleChecker+Invalid, 9794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 579 mSolverCounterUnsat, 1245 mSDtfsCounter, 9215 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4121 GetRequests, 3360 SyntacticMatches, 131 SemanticMatches, 630 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8873 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=353occurred in iteration=29, InterpolantAutomatonStates: 482, 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, 33 MinimizatonAttempts, 923 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 4330 NumberOfCodeBlocks, 4330 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 5894 ConstructedInterpolants, 0 QuantifiedInterpolants, 11875 SizeOfPredicates, 45 NumberOfNonLiveVariables, 4124 ConjunctsInSsa, 284 ConjunctsInUnsatCore, 70 InterpolantComputations, 18 PerfectInterpolantSequences, 9272/11502 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! [2025-02-08 10:00:59,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE