./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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_8-2.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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 14:31:59,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 14:31:59,375 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 14:31:59,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 14:31:59,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 14:31:59,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 14:31:59,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 14:31:59,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 14:31:59,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 14:31:59,392 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 14:31:59,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 14:31:59,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 14:31:59,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 14:31:59,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 14:31:59,392 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 14:31:59,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 14:31:59,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 14:31:59,394 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 14:31:59,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 14:31:59,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 14:31:59,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 14:31:59,395 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 14:31:59,396 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:31:59,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 14:31:59,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 14:31:59,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 14:31:59,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 14:31:59,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 14:31:59,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 14:31:59,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 14:31:59,397 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 -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2025-02-06 14:31:59,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 14:31:59,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 14:31:59,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 14:31:59,604 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 14:31:59,604 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 14:31:59,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2025-02-06 14:32:00,693 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/997a9e0eb/ffeb8af8b6e14688b881493d1690747f/FLAG9c0ab50e8 [2025-02-06 14:32:00,931 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 14:32:00,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2025-02-06 14:32:00,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/997a9e0eb/ffeb8af8b6e14688b881493d1690747f/FLAG9c0ab50e8 [2025-02-06 14:32:01,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/997a9e0eb/ffeb8af8b6e14688b881493d1690747f [2025-02-06 14:32:01,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 14:32:01,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 14:32:01,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 14:32:01,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 14:32:01,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 14:32:01,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7043beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01, skipping insertion in model container [2025-02-06 14:32:01,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,287 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 14:32:01,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:32:01,377 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 14:32:01,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:32:01,394 INFO L204 MainTranslator]: Completed translation [2025-02-06 14:32:01,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01 WrapperNode [2025-02-06 14:32:01,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 14:32:01,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 14:32:01,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 14:32:01,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 14:32:01,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,412 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-02-06 14:32:01,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 14:32:01,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 14:32:01,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 14:32:01,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 14:32:01,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,424 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]. [2025-02-06 14:32:01,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,427 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 14:32:01,434 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 14:32:01,434 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 14:32:01,434 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 14:32:01,435 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (1/1) ... [2025-02-06 14:32:01,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:32:01,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:01,460 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) [2025-02-06 14:32:01,467 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 [2025-02-06 14:32:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 14:32:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 14:32:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-02-06 14:32:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-02-06 14:32:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-02-06 14:32:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-02-06 14:32:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 14:32:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 14:32:01,525 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 14:32:01,526 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 14:32:01,603 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-02-06 14:32:01,640 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-02-06 14:32:01,649 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-02-06 14:32:01,650 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 14:32:01,658 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 14:32:01,659 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 14:32:01,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:32:01 BoogieIcfgContainer [2025-02-06 14:32:01,660 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 14:32:01,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 14:32:01,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 14:32:01,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 14:32:01,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:32:01" (1/3) ... [2025-02-06 14:32:01,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a1c518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:32:01, skipping insertion in model container [2025-02-06 14:32:01,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:32:01" (2/3) ... [2025-02-06 14:32:01,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a1c518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:32:01, skipping insertion in model container [2025-02-06 14:32:01,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:32:01" (3/3) ... [2025-02-06 14:32:01,667 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2025-02-06 14:32:01,678 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 14:32:01,680 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_8-2.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-02-06 14:32:01,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 14:32:01,721 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;@de352b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 14:32:01,722 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-02-06 14:32:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 14:32:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 14:32:01,728 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:01,728 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:01,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:01,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:01,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1954105288, now seen corresponding path program 1 times [2025-02-06 14:32:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:01,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559954918] [2025-02-06 14:32:01,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:01,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 14:32:01,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 14:32:01,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:01,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:01,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:01,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559954918] [2025-02-06 14:32:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559954918] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:01,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:01,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 14:32:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785777754] [2025-02-06 14:32:01,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:01,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 14:32:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:01,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 14:32:01,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 14:32:01,879 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:01,910 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2025-02-06 14:32:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 14:32:01,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 14:32:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:01,916 INFO L225 Difference]: With dead ends: 59 [2025-02-06 14:32:01,916 INFO L226 Difference]: Without dead ends: 45 [2025-02-06 14:32:01,918 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 [2025-02-06 14:32:01,919 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:01,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-06 14:32:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-02-06 14:32:01,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 14:32:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-02-06 14:32:01,943 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2025-02-06 14:32:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:01,943 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-02-06 14:32:01,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-02-06 14:32:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 14:32:01,944 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:01,944 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:01,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 14:32:01,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:01,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash -447721764, now seen corresponding path program 1 times [2025-02-06 14:32:01,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:01,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671923872] [2025-02-06 14:32:01,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:01,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:01,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 14:32:01,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 14:32:01,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:01,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:02,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671923872] [2025-02-06 14:32:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671923872] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:02,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:02,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:02,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065259090] [2025-02-06 14:32:02,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:02,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:02,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:02,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:02,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:02,017 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:02,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:02,071 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2025-02-06 14:32:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:02,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 14:32:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:02,072 INFO L225 Difference]: With dead ends: 64 [2025-02-06 14:32:02,072 INFO L226 Difference]: Without dead ends: 58 [2025-02-06 14:32:02,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:32:02,073 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:02,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:02,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-06 14:32:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2025-02-06 14:32:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 14:32:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2025-02-06 14:32:02,082 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2025-02-06 14:32:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:02,083 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2025-02-06 14:32:02,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2025-02-06 14:32:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 14:32:02,083 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:02,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:02,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 14:32:02,083 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:02,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2145956475, now seen corresponding path program 1 times [2025-02-06 14:32:02,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:02,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974667637] [2025-02-06 14:32:02,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:02,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:02,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 14:32:02,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 14:32:02,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:02,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:02,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974667637] [2025-02-06 14:32:02,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974667637] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:02,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:02,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 14:32:02,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619173384] [2025-02-06 14:32:02,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:02,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 14:32:02,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:02,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 14:32:02,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 14:32:02,114 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:02,141 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2025-02-06 14:32:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 14:32:02,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-06 14:32:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:02,144 INFO L225 Difference]: With dead ends: 58 [2025-02-06 14:32:02,144 INFO L226 Difference]: Without dead ends: 56 [2025-02-06 14:32:02,145 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 [2025-02-06 14:32:02,145 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:02,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-06 14:32:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2025-02-06 14:32:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 14:32:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-02-06 14:32:02,154 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2025-02-06 14:32:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:02,154 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-02-06 14:32:02,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-02-06 14:32:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 14:32:02,154 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:02,154 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:02,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 14:32:02,155 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:02,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2100141288, now seen corresponding path program 1 times [2025-02-06 14:32:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833068506] [2025-02-06 14:32:02,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:02,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:02,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 14:32:02,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 14:32:02,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:02,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:02,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:02,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833068506] [2025-02-06 14:32:02,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833068506] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:02,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:02,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:32:02,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167822542] [2025-02-06 14:32:02,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:02,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:32:02,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:02,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:32:02,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:32:02,224 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:02,321 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2025-02-06 14:32:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:32:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 14:32:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:02,322 INFO L225 Difference]: With dead ends: 58 [2025-02-06 14:32:02,322 INFO L226 Difference]: Without dead ends: 54 [2025-02-06 14:32:02,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:32:02,323 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:02,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-06 14:32:02,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2025-02-06 14:32:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 14:32:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-02-06 14:32:02,329 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2025-02-06 14:32:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:02,329 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-02-06 14:32:02,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:32:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-02-06 14:32:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 14:32:02,330 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:02,330 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:02,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 14:32:02,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:02,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:02,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1831817774, now seen corresponding path program 1 times [2025-02-06 14:32:02,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:02,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326877134] [2025-02-06 14:32:02,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:02,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 14:32:02,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 14:32:02,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:02,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 14:32:02,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326877134] [2025-02-06 14:32:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326877134] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:02,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594518003] [2025-02-06 14:32:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:02,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:02,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:02,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:02,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:02,446 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:02,472 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2025-02-06 14:32:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-06 14:32:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:02,474 INFO L225 Difference]: With dead ends: 74 [2025-02-06 14:32:02,474 INFO L226 Difference]: Without dead ends: 69 [2025-02-06 14:32:02,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:02,474 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:02,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-06 14:32:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-02-06 14:32:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2025-02-06 14:32:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2025-02-06 14:32:02,481 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2025-02-06 14:32:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:02,481 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2025-02-06 14:32:02,481 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) [2025-02-06 14:32:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2025-02-06 14:32:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 14:32:02,482 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:02,482 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:02,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 14:32:02,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:02,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash -631666365, now seen corresponding path program 1 times [2025-02-06 14:32:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385598528] [2025-02-06 14:32:02,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:02,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:32:02,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:32:02,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:02,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 14:32:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385598528] [2025-02-06 14:32:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385598528] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276414203] [2025-02-06 14:32:02,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:02,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:02,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:02,562 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) [2025-02-06 14:32:02,564 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 [2025-02-06 14:32:02,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:32:02,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:32:02,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:02,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:02,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 14:32:02,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:02,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:32:02,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276414203] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:02,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:32:02,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-02-06 14:32:02,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464662700] [2025-02-06 14:32:02,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:02,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:32:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:02,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:32:02,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-06 14:32:02,664 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:02,758 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2025-02-06 14:32:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:32:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-02-06 14:32:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:02,759 INFO L225 Difference]: With dead ends: 117 [2025-02-06 14:32:02,759 INFO L226 Difference]: Without dead ends: 63 [2025-02-06 14:32:02,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:32:02,760 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 31 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:02,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 176 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-06 14:32:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2025-02-06 14:32:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.2) internal successors, (54), 49 states have internal predecessors, (54), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2025-02-06 14:32:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2025-02-06 14:32:02,765 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 24 [2025-02-06 14:32:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:02,765 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2025-02-06 14:32:02,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2025-02-06 14:32:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 14:32:02,766 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:02,766 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] [2025-02-06 14:32:02,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 14:32:02,966 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 [2025-02-06 14:32:02,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:02,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:02,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2003454357, now seen corresponding path program 1 times [2025-02-06 14:32:02,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:02,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840805226] [2025-02-06 14:32:02,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:02,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:02,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 14:32:02,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 14:32:02,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:02,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 14:32:03,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:03,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840805226] [2025-02-06 14:32:03,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840805226] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:03,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:03,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902018271] [2025-02-06 14:32:03,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:03,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:03,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:03,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:03,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:03,013 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:03,042 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2025-02-06 14:32:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:03,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-02-06 14:32:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:03,043 INFO L225 Difference]: With dead ends: 75 [2025-02-06 14:32:03,043 INFO L226 Difference]: Without dead ends: 73 [2025-02-06 14:32:03,043 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 [2025-02-06 14:32:03,043 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:03,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-06 14:32:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2025-02-06 14:32:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 56 states have internal predecessors, (61), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2025-02-06 14:32:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2025-02-06 14:32:03,049 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 29 [2025-02-06 14:32:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:03,049 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2025-02-06 14:32:03,049 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) [2025-02-06 14:32:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2025-02-06 14:32:03,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-06 14:32:03,050 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:03,050 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:03,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 14:32:03,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:03,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1424432597, now seen corresponding path program 1 times [2025-02-06 14:32:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:03,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868732069] [2025-02-06 14:32:03,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:03,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:03,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 14:32:03,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 14:32:03,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:03,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:32:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868732069] [2025-02-06 14:32:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868732069] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:03,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144594583] [2025-02-06 14:32:03,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:03,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:03,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:03,107 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) [2025-02-06 14:32:03,126 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 [2025-02-06 14:32:03,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 14:32:03,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 14:32:03,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:03,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:03,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 14:32:03,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:03,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 14:32:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144594583] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:03,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:03,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 14:32:03,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651766924] [2025-02-06 14:32:03,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:03,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 14:32:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:03,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 14:32:03,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:32:03,372 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:32:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:03,701 INFO L93 Difference]: Finished difference Result 192 states and 253 transitions. [2025-02-06 14:32:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:32:03,702 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2025-02-06 14:32:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:03,703 INFO L225 Difference]: With dead ends: 192 [2025-02-06 14:32:03,703 INFO L226 Difference]: Without dead ends: 131 [2025-02-06 14:32:03,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:32:03,706 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 122 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:03,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 640 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:32:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-06 14:32:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2025-02-06 14:32:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 92 states have internal predecessors, (103), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (27), 16 states have call predecessors, (27), 14 states have call successors, (27) [2025-02-06 14:32:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2025-02-06 14:32:03,721 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 30 [2025-02-06 14:32:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:03,721 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2025-02-06 14:32:03,721 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) [2025-02-06 14:32:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2025-02-06 14:32:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 14:32:03,722 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:03,722 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:03,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 14:32:03,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:03,923 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:03,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2119279126, now seen corresponding path program 2 times [2025-02-06 14:32:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:03,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612630263] [2025-02-06 14:32:03,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:03,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:03,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 14:32:03,935 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:32:03,935 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:03,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 14:32:04,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612630263] [2025-02-06 14:32:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612630263] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73496933] [2025-02-06 14:32:04,011 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:04,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:04,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:04,014 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) [2025-02-06 14:32:04,015 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 [2025-02-06 14:32:04,036 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 14:32:04,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:32:04,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:04,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:04,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 14:32:04,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 14:32:04,091 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:32:04,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73496933] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:04,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:32:04,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-06 14:32:04,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020672975] [2025-02-06 14:32:04,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:04,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:04,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:04,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:32:04,092 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:04,119 INFO L93 Difference]: Finished difference Result 124 states and 157 transitions. [2025-02-06 14:32:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2025-02-06 14:32:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:04,121 INFO L225 Difference]: With dead ends: 124 [2025-02-06 14:32:04,121 INFO L226 Difference]: Without dead ends: 123 [2025-02-06 14:32:04,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:32:04,121 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:04,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-02-06 14:32:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2025-02-06 14:32:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 94 states have internal predecessors, (107), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (27), 18 states have call predecessors, (27), 14 states have call successors, (27) [2025-02-06 14:32:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2025-02-06 14:32:04,137 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 42 [2025-02-06 14:32:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:04,137 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2025-02-06 14:32:04,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:04,137 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2025-02-06 14:32:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-06 14:32:04,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:04,138 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:04,144 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 [2025-02-06 14:32:04,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:04,342 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:04,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1273143481, now seen corresponding path program 1 times [2025-02-06 14:32:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:04,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797071649] [2025-02-06 14:32:04,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:04,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 14:32:04,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 14:32:04,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:04,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 14:32:04,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:04,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797071649] [2025-02-06 14:32:04,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797071649] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:04,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244411266] [2025-02-06 14:32:04,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:04,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:04,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:04,393 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) [2025-02-06 14:32:04,395 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 [2025-02-06 14:32:04,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 14:32:04,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 14:32:04,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:04,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:04,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 14:32:04,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:04,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 14:32:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244411266] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:04,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:04,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23 [2025-02-06 14:32:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494267204] [2025-02-06 14:32:04,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:04,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:32:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:04,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:32:04,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:32:04,749 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:32:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:05,146 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2025-02-06 14:32:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 14:32:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2025-02-06 14:32:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:05,148 INFO L225 Difference]: With dead ends: 309 [2025-02-06 14:32:05,148 INFO L226 Difference]: Without dead ends: 205 [2025-02-06 14:32:05,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2025-02-06 14:32:05,149 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 194 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:05,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 719 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:32:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-02-06 14:32:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 185. [2025-02-06 14:32:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 146 states have internal predecessors, (168), 24 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (40), 28 states have call predecessors, (40), 23 states have call successors, (40) [2025-02-06 14:32:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 232 transitions. [2025-02-06 14:32:05,172 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 232 transitions. Word has length 43 [2025-02-06 14:32:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:05,172 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 232 transitions. [2025-02-06 14:32:05,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:32:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 232 transitions. [2025-02-06 14:32:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-06 14:32:05,177 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:05,177 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:05,183 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 [2025-02-06 14:32:05,377 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,SelfDestructingSolverStorable9 [2025-02-06 14:32:05,378 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:05,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1449509820, now seen corresponding path program 1 times [2025-02-06 14:32:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:05,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903083646] [2025-02-06 14:32:05,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:05,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:05,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 14:32:05,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 14:32:05,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:05,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-02-06 14:32:05,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903083646] [2025-02-06 14:32:05,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903083646] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216678086] [2025-02-06 14:32:05,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:05,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:05,435 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) [2025-02-06 14:32:05,437 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 [2025-02-06 14:32:05,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 14:32:05,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 14:32:05,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:05,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:05,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 14:32:05,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-02-06 14:32:05,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-02-06 14:32:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216678086] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:05,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:05,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2025-02-06 14:32:05,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206347476] [2025-02-06 14:32:05,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:05,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 14:32:05,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:05,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 14:32:05,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:32:05,553 INFO L87 Difference]: Start difference. First operand 185 states and 232 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 14:32:05,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:05,611 INFO L93 Difference]: Finished difference Result 204 states and 262 transitions. [2025-02-06 14:32:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:32:05,612 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 60 [2025-02-06 14:32:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:05,614 INFO L225 Difference]: With dead ends: 204 [2025-02-06 14:32:05,614 INFO L226 Difference]: Without dead ends: 202 [2025-02-06 14:32:05,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-02-06 14:32:05,615 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:05,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 241 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-02-06 14:32:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2025-02-06 14:32:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.1554054054054055) internal successors, (171), 149 states have internal predecessors, (171), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (45), 29 states have call predecessors, (45), 23 states have call successors, (45) [2025-02-06 14:32:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 240 transitions. [2025-02-06 14:32:05,627 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 240 transitions. Word has length 60 [2025-02-06 14:32:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:05,627 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 240 transitions. [2025-02-06 14:32:05,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 14:32:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 240 transitions. [2025-02-06 14:32:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-06 14:32:05,628 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:05,629 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:05,634 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 [2025-02-06 14:32:05,833 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,SelfDestructingSolverStorable10 [2025-02-06 14:32:05,833 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:05,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:05,833 INFO L85 PathProgramCache]: Analyzing trace with hash -526707704, now seen corresponding path program 1 times [2025-02-06 14:32:05,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:05,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481873348] [2025-02-06 14:32:05,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:05,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:05,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-06 14:32:05,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 14:32:05,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:05,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-02-06 14:32:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481873348] [2025-02-06 14:32:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481873348] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286432836] [2025-02-06 14:32:05,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:05,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:05,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:05,897 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) [2025-02-06 14:32:05,898 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 [2025-02-06 14:32:05,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-06 14:32:05,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 14:32:05,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:05,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:05,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:32:05,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:32:06,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 14:32:06,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286432836] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:06,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:06,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24 [2025-02-06 14:32:06,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132767248] [2025-02-06 14:32:06,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:06,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 14:32:06,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:06,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 14:32:06,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:32:06,332 INFO L87 Difference]: Start difference. First operand 189 states and 240 transitions. Second operand has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 17 states have internal predecessors, (75), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-06 14:32:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:06,825 INFO L93 Difference]: Finished difference Result 408 states and 522 transitions. [2025-02-06 14:32:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 14:32:06,825 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 17 states have internal predecessors, (75), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 61 [2025-02-06 14:32:06,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:06,828 INFO L225 Difference]: With dead ends: 408 [2025-02-06 14:32:06,828 INFO L226 Difference]: Without dead ends: 240 [2025-02-06 14:32:06,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 95 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2025-02-06 14:32:06,829 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 219 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:06,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1025 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:32:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-02-06 14:32:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2025-02-06 14:32:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 171 states have (on average 1.1461988304093567) internal successors, (196), 170 states have internal predecessors, (196), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 35 states have call predecessors, (54), 27 states have call successors, (54) [2025-02-06 14:32:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 278 transitions. [2025-02-06 14:32:06,844 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 278 transitions. Word has length 61 [2025-02-06 14:32:06,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:06,844 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 278 transitions. [2025-02-06 14:32:06,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 17 states have internal predecessors, (75), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-06 14:32:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 278 transitions. [2025-02-06 14:32:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-06 14:32:06,845 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:06,845 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:06,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 14:32:07,050 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,SelfDestructingSolverStorable11 [2025-02-06 14:32:07,051 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:07,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:07,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1350583663, now seen corresponding path program 1 times [2025-02-06 14:32:07,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:07,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004420004] [2025-02-06 14:32:07,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:07,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:07,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 14:32:07,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 14:32:07,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:07,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-02-06 14:32:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004420004] [2025-02-06 14:32:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004420004] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:07,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:07,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:07,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63914720] [2025-02-06 14:32:07,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:07,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:07,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:07,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:07,109 INFO L87 Difference]: Start difference. First operand 217 states and 278 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:07,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:07,130 INFO L93 Difference]: Finished difference Result 231 states and 295 transitions. [2025-02-06 14:32:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2025-02-06 14:32:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:07,132 INFO L225 Difference]: With dead ends: 231 [2025-02-06 14:32:07,132 INFO L226 Difference]: Without dead ends: 230 [2025-02-06 14:32:07,133 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 [2025-02-06 14:32:07,133 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:07,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-02-06 14:32:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 213. [2025-02-06 14:32:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 168 states have (on average 1.1488095238095237) internal successors, (193), 167 states have internal predecessors, (193), 27 states have call successors, (27), 11 states have call predecessors, (27), 14 states have return successors, (51), 34 states have call predecessors, (51), 26 states have call successors, (51) [2025-02-06 14:32:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 271 transitions. [2025-02-06 14:32:07,142 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 271 transitions. Word has length 62 [2025-02-06 14:32:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:07,143 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 271 transitions. [2025-02-06 14:32:07,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:32:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 271 transitions. [2025-02-06 14:32:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-06 14:32:07,143 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:07,144 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:07,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 14:32:07,144 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:07,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash -187532730, now seen corresponding path program 1 times [2025-02-06 14:32:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:07,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498651124] [2025-02-06 14:32:07,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:07,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:07,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-06 14:32:07,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 14:32:07,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:07,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-02-06 14:32:07,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498651124] [2025-02-06 14:32:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498651124] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:07,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:07,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:07,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395710330] [2025-02-06 14:32:07,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:07,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:07,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:07,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:07,208 INFO L87 Difference]: Start difference. First operand 213 states and 271 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 14:32:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:07,249 INFO L93 Difference]: Finished difference Result 223 states and 283 transitions. [2025-02-06 14:32:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:07,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2025-02-06 14:32:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:07,250 INFO L225 Difference]: With dead ends: 223 [2025-02-06 14:32:07,250 INFO L226 Difference]: Without dead ends: 222 [2025-02-06 14:32:07,250 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 [2025-02-06 14:32:07,251 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:07,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 182 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-02-06 14:32:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 207. [2025-02-06 14:32:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 164 states have (on average 1.1524390243902438) internal successors, (189), 162 states have internal predecessors, (189), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (43), 33 states have call predecessors, (43), 25 states have call successors, (43) [2025-02-06 14:32:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 258 transitions. [2025-02-06 14:32:07,259 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 258 transitions. Word has length 77 [2025-02-06 14:32:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:07,260 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 258 transitions. [2025-02-06 14:32:07,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 14:32:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 258 transitions. [2025-02-06 14:32:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-06 14:32:07,261 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:07,261 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:07,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 14:32:07,261 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:07,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:07,261 INFO L85 PathProgramCache]: Analyzing trace with hash 334468081, now seen corresponding path program 1 times [2025-02-06 14:32:07,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:07,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870951722] [2025-02-06 14:32:07,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:07,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:07,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-06 14:32:07,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-06 14:32:07,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:07,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 14:32:07,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:07,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870951722] [2025-02-06 14:32:07,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870951722] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:07,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388246779] [2025-02-06 14:32:07,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:07,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:07,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:07,479 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) [2025-02-06 14:32:07,482 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 [2025-02-06 14:32:07,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-06 14:32:07,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-06 14:32:07,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:07,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:07,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:32:07,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 14:32:07,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 14:32:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388246779] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:07,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:07,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2025-02-06 14:32:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126419061] [2025-02-06 14:32:07,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:07,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 14:32:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:07,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 14:32:07,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2025-02-06 14:32:07,800 INFO L87 Difference]: Start difference. First operand 207 states and 258 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:32:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:08,146 INFO L93 Difference]: Finished difference Result 548 states and 727 transitions. [2025-02-06 14:32:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 14:32:08,147 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2025-02-06 14:32:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:08,148 INFO L225 Difference]: With dead ends: 548 [2025-02-06 14:32:08,148 INFO L226 Difference]: Without dead ends: 362 [2025-02-06 14:32:08,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 150 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2025-02-06 14:32:08,150 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 251 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:08,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 321 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-02-06 14:32:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 352. [2025-02-06 14:32:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 281 states have (on average 1.1530249110320285) internal successors, (324), 275 states have internal predecessors, (324), 44 states have call successors, (44), 18 states have call predecessors, (44), 23 states have return successors, (74), 58 states have call predecessors, (74), 43 states have call successors, (74) [2025-02-06 14:32:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 442 transitions. [2025-02-06 14:32:08,170 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 442 transitions. Word has length 80 [2025-02-06 14:32:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:08,170 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 442 transitions. [2025-02-06 14:32:08,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:32:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 442 transitions. [2025-02-06 14:32:08,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-06 14:32:08,171 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:08,171 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:08,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 14:32:08,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:08,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:08,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -564968211, now seen corresponding path program 1 times [2025-02-06 14:32:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:08,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756623851] [2025-02-06 14:32:08,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:08,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 14:32:08,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 14:32:08,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:08,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-06 14:32:08,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756623851] [2025-02-06 14:32:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756623851] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:08,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:08,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:08,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11640592] [2025-02-06 14:32:08,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:08,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:08,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:08,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:08,433 INFO L87 Difference]: Start difference. First operand 352 states and 442 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:32:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:08,459 INFO L93 Difference]: Finished difference Result 380 states and 481 transitions. [2025-02-06 14:32:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2025-02-06 14:32:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:08,462 INFO L225 Difference]: With dead ends: 380 [2025-02-06 14:32:08,462 INFO L226 Difference]: Without dead ends: 379 [2025-02-06 14:32:08,462 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 [2025-02-06 14:32:08,463 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:08,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-02-06 14:32:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 365. [2025-02-06 14:32:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 292 states have (on average 1.1472602739726028) internal successors, (335), 285 states have internal predecessors, (335), 44 states have call successors, (44), 18 states have call predecessors, (44), 25 states have return successors, (83), 61 states have call predecessors, (83), 43 states have call successors, (83) [2025-02-06 14:32:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 462 transitions. [2025-02-06 14:32:08,484 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 462 transitions. Word has length 74 [2025-02-06 14:32:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:08,484 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 462 transitions. [2025-02-06 14:32:08,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:32:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 462 transitions. [2025-02-06 14:32:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 14:32:08,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:08,485 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:08,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 14:32:08,485 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:08,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:08,486 INFO L85 PathProgramCache]: Analyzing trace with hash -367593985, now seen corresponding path program 1 times [2025-02-06 14:32:08,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:08,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204717206] [2025-02-06 14:32:08,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:08,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:08,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 14:32:08,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 14:32:08,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:08,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2025-02-06 14:32:08,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204717206] [2025-02-06 14:32:08,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204717206] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001959018] [2025-02-06 14:32:08,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:08,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:08,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:08,614 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) [2025-02-06 14:32:08,616 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 [2025-02-06 14:32:08,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 14:32:08,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 14:32:08,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:08,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:08,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 14:32:08,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-02-06 14:32:08,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:32:08,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001959018] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:08,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:32:08,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2025-02-06 14:32:08,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359348702] [2025-02-06 14:32:08,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:08,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 14:32:08,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:08,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 14:32:08,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:32:08,733 INFO L87 Difference]: Start difference. First operand 365 states and 462 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 14:32:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:08,792 INFO L93 Difference]: Finished difference Result 463 states and 611 transitions. [2025-02-06 14:32:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 14:32:08,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 75 [2025-02-06 14:32:08,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:08,795 INFO L225 Difference]: With dead ends: 463 [2025-02-06 14:32:08,795 INFO L226 Difference]: Without dead ends: 462 [2025-02-06 14:32:08,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:32:08,795 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:08,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 206 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2025-02-06 14:32:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 401. [2025-02-06 14:32:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 321 states have (on average 1.1495327102803738) internal successors, (369), 311 states have internal predecessors, (369), 47 states have call successors, (47), 18 states have call predecessors, (47), 29 states have return successors, (108), 71 states have call predecessors, (108), 46 states have call successors, (108) [2025-02-06 14:32:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 524 transitions. [2025-02-06 14:32:08,819 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 524 transitions. Word has length 75 [2025-02-06 14:32:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:08,819 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 524 transitions. [2025-02-06 14:32:08,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 14:32:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 524 transitions. [2025-02-06 14:32:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 14:32:08,821 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:08,821 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:08,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 14:32:09,025 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,SelfDestructingSolverStorable16 [2025-02-06 14:32:09,025 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:09,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1572506541, now seen corresponding path program 1 times [2025-02-06 14:32:09,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296912004] [2025-02-06 14:32:09,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:09,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:32:09,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:32:09,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:09,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2025-02-06 14:32:09,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:09,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296912004] [2025-02-06 14:32:09,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296912004] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:09,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449185461] [2025-02-06 14:32:09,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:09,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:09,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:09,083 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) [2025-02-06 14:32:09,084 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 [2025-02-06 14:32:09,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:32:09,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:32:09,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:09,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:09,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:32:09,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 135 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 14:32:09,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 75 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:32:09,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449185461] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:09,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:09,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 22 [2025-02-06 14:32:09,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55096932] [2025-02-06 14:32:09,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:09,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 14:32:09,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:09,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 14:32:09,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-02-06 14:32:09,507 INFO L87 Difference]: Start difference. First operand 401 states and 524 transitions. Second operand has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 14 states have internal predecessors, (95), 11 states have call successors, (20), 10 states have call predecessors, (20), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-02-06 14:32:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:09,916 INFO L93 Difference]: Finished difference Result 503 states and 645 transitions. [2025-02-06 14:32:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 14:32:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 14 states have internal predecessors, (95), 11 states have call successors, (20), 10 states have call predecessors, (20), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 93 [2025-02-06 14:32:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:09,918 INFO L225 Difference]: With dead ends: 503 [2025-02-06 14:32:09,918 INFO L226 Difference]: Without dead ends: 441 [2025-02-06 14:32:09,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 17 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 14:32:09,919 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 234 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:09,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 330 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:32:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2025-02-06 14:32:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 413. [2025-02-06 14:32:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 330 states have (on average 1.1454545454545455) internal successors, (378), 320 states have internal predecessors, (378), 49 states have call successors, (49), 19 states have call predecessors, (49), 30 states have return successors, (116), 73 states have call predecessors, (116), 48 states have call successors, (116) [2025-02-06 14:32:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 543 transitions. [2025-02-06 14:32:09,936 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 543 transitions. Word has length 93 [2025-02-06 14:32:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:09,936 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 543 transitions. [2025-02-06 14:32:09,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 14 states have internal predecessors, (95), 11 states have call successors, (20), 10 states have call predecessors, (20), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-02-06 14:32:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 543 transitions. [2025-02-06 14:32:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 14:32:09,936 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:09,936 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:09,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 14:32:10,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 14:32:10,141 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:10,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1678854214, now seen corresponding path program 1 times [2025-02-06 14:32:10,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:10,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403092879] [2025-02-06 14:32:10,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:10,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 14:32:10,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 14:32:10,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:10,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-06 14:32:10,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403092879] [2025-02-06 14:32:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403092879] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:10,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131961022] [2025-02-06 14:32:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:10,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:10,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:10,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:10,191 INFO L87 Difference]: Start difference. First operand 413 states and 543 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:32:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:10,216 INFO L93 Difference]: Finished difference Result 428 states and 563 transitions. [2025-02-06 14:32:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:10,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2025-02-06 14:32:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:10,218 INFO L225 Difference]: With dead ends: 428 [2025-02-06 14:32:10,218 INFO L226 Difference]: Without dead ends: 427 [2025-02-06 14:32:10,219 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 [2025-02-06 14:32:10,219 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:10,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 145 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2025-02-06 14:32:10,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 413. [2025-02-06 14:32:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 330 states have (on average 1.1393939393939394) internal successors, (376), 320 states have internal predecessors, (376), 49 states have call successors, (49), 19 states have call predecessors, (49), 30 states have return successors, (116), 73 states have call predecessors, (116), 48 states have call successors, (116) [2025-02-06 14:32:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 541 transitions. [2025-02-06 14:32:10,239 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 541 transitions. Word has length 78 [2025-02-06 14:32:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:10,239 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 541 transitions. [2025-02-06 14:32:10,239 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) [2025-02-06 14:32:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 541 transitions. [2025-02-06 14:32:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-06 14:32:10,240 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:10,240 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:10,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 14:32:10,241 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:10,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1259276991, now seen corresponding path program 1 times [2025-02-06 14:32:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210323001] [2025-02-06 14:32:10,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:10,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-06 14:32:10,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 14:32:10,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:10,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-02-06 14:32:10,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:10,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210323001] [2025-02-06 14:32:10,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210323001] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:10,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508965054] [2025-02-06 14:32:10,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:10,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:10,289 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) [2025-02-06 14:32:10,291 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 [2025-02-06 14:32:10,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-06 14:32:10,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 14:32:10,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:10,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:10,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:32:10,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-06 14:32:10,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:32:10,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508965054] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:10,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:32:10,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4] total 24 [2025-02-06 14:32:10,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510671672] [2025-02-06 14:32:10,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:10,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 14:32:10,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:10,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 14:32:10,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:32:10,501 INFO L87 Difference]: Start difference. First operand 413 states and 541 transitions. Second operand has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-06 14:32:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:10,807 INFO L93 Difference]: Finished difference Result 798 states and 1082 transitions. [2025-02-06 14:32:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 14:32:10,808 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 97 [2025-02-06 14:32:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:10,810 INFO L225 Difference]: With dead ends: 798 [2025-02-06 14:32:10,810 INFO L226 Difference]: Without dead ends: 445 [2025-02-06 14:32:10,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 14:32:10,813 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 277 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:10,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 310 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2025-02-06 14:32:10,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 436. [2025-02-06 14:32:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 347 states have (on average 1.138328530259366) internal successors, (395), 339 states have internal predecessors, (395), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (118), 75 states have call predecessors, (118), 50 states have call successors, (118) [2025-02-06 14:32:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 564 transitions. [2025-02-06 14:32:10,832 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 564 transitions. Word has length 97 [2025-02-06 14:32:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:10,832 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 564 transitions. [2025-02-06 14:32:10,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-06 14:32:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 564 transitions. [2025-02-06 14:32:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 14:32:10,833 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:10,833 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:10,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 14:32:11,037 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 [2025-02-06 14:32:11,037 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:11,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash -504873074, now seen corresponding path program 1 times [2025-02-06 14:32:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:11,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744157952] [2025-02-06 14:32:11,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:11,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:11,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 14:32:11,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 14:32:11,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:11,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-06 14:32:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744157952] [2025-02-06 14:32:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744157952] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:11,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994032601] [2025-02-06 14:32:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:11,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:11,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:11,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:11,075 INFO L87 Difference]: Start difference. First operand 436 states and 564 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:32:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:11,097 INFO L93 Difference]: Finished difference Result 451 states and 581 transitions. [2025-02-06 14:32:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:11,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 79 [2025-02-06 14:32:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:11,099 INFO L225 Difference]: With dead ends: 451 [2025-02-06 14:32:11,099 INFO L226 Difference]: Without dead ends: 450 [2025-02-06 14:32:11,099 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 [2025-02-06 14:32:11,100 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:11,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2025-02-06 14:32:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2025-02-06 14:32:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 347 states have (on average 1.1325648414985592) internal successors, (393), 339 states have internal predecessors, (393), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (118), 75 states have call predecessors, (118), 50 states have call successors, (118) [2025-02-06 14:32:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 562 transitions. [2025-02-06 14:32:11,115 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 562 transitions. Word has length 79 [2025-02-06 14:32:11,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:11,115 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 562 transitions. [2025-02-06 14:32:11,115 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) [2025-02-06 14:32:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 562 transitions. [2025-02-06 14:32:11,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-02-06 14:32:11,116 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:11,116 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:11,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 14:32:11,116 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:11,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1621670381, now seen corresponding path program 1 times [2025-02-06 14:32:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294339898] [2025-02-06 14:32:11,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:11,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:11,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-02-06 14:32:11,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-02-06 14:32:11,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:11,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-02-06 14:32:11,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:11,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294339898] [2025-02-06 14:32:11,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294339898] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:11,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:32:11,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:32:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925250125] [2025-02-06 14:32:11,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:11,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:32:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:11,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:32:11,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:32:11,150 INFO L87 Difference]: Start difference. First operand 436 states and 562 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 14:32:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:11,174 INFO L93 Difference]: Finished difference Result 466 states and 603 transitions. [2025-02-06 14:32:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:32:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2025-02-06 14:32:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:11,177 INFO L225 Difference]: With dead ends: 466 [2025-02-06 14:32:11,177 INFO L226 Difference]: Without dead ends: 465 [2025-02-06 14:32:11,177 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 [2025-02-06 14:32:11,178 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:11,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 147 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-02-06 14:32:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 442. [2025-02-06 14:32:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 353 states have (on average 1.1303116147308783) internal successors, (399), 342 states have internal predecessors, (399), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (118), 78 states have call predecessors, (118), 50 states have call successors, (118) [2025-02-06 14:32:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 568 transitions. [2025-02-06 14:32:11,194 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 568 transitions. Word has length 87 [2025-02-06 14:32:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:11,194 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 568 transitions. [2025-02-06 14:32:11,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 14:32:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 568 transitions. [2025-02-06 14:32:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-06 14:32:11,195 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:11,195 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:11,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 14:32:11,196 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:11,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1267825733, now seen corresponding path program 1 times [2025-02-06 14:32:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699367818] [2025-02-06 14:32:11,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:11,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:11,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-06 14:32:11,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-06 14:32:11,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:11,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 14:32:11,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699367818] [2025-02-06 14:32:11,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699367818] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756959886] [2025-02-06 14:32:11,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:11,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:11,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:11,359 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) [2025-02-06 14:32:11,361 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 [2025-02-06 14:32:11,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-06 14:32:11,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-06 14:32:11,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:11,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:11,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:11,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 14:32:11,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 14:32:11,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756959886] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:11,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:11,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2025-02-06 14:32:11,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468727229] [2025-02-06 14:32:11,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:11,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 14:32:11,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:11,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 14:32:11,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:32:11,648 INFO L87 Difference]: Start difference. First operand 442 states and 568 transitions. Second operand has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:32:11,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:11,953 INFO L93 Difference]: Finished difference Result 843 states and 1085 transitions. [2025-02-06 14:32:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 14:32:11,954 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 88 [2025-02-06 14:32:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:11,956 INFO L225 Difference]: With dead ends: 843 [2025-02-06 14:32:11,956 INFO L226 Difference]: Without dead ends: 469 [2025-02-06 14:32:11,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 167 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2025-02-06 14:32:11,958 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 163 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:11,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 579 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-02-06 14:32:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 442. [2025-02-06 14:32:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 353 states have (on average 1.1303116147308783) internal successors, (399), 342 states have internal predecessors, (399), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (112), 78 states have call predecessors, (112), 50 states have call successors, (112) [2025-02-06 14:32:11,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 562 transitions. [2025-02-06 14:32:11,973 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 562 transitions. Word has length 88 [2025-02-06 14:32:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:11,973 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 562 transitions. [2025-02-06 14:32:11,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.388888888888889) internal successors, (79), 14 states have internal predecessors, (79), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:32:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 562 transitions. [2025-02-06 14:32:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-02-06 14:32:11,974 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:11,974 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:11,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 14:32:12,179 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,SelfDestructingSolverStorable22 [2025-02-06 14:32:12,179 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:12,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1960176973, now seen corresponding path program 1 times [2025-02-06 14:32:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209413203] [2025-02-06 14:32:12,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:12,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-06 14:32:12,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 14:32:12,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:12,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 14:32:12,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:12,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209413203] [2025-02-06 14:32:12,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209413203] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:12,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431975169] [2025-02-06 14:32:12,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:12,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:12,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:12,293 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) [2025-02-06 14:32:12,295 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 [2025-02-06 14:32:12,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-06 14:32:12,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 14:32:12,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:12,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:12,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 14:32:12,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 14:32:12,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 14:32:12,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431975169] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:12,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:12,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2025-02-06 14:32:12,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716752321] [2025-02-06 14:32:12,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:12,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 14:32:12,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:12,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 14:32:12,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:32:12,521 INFO L87 Difference]: Start difference. First operand 442 states and 562 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 14:32:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:12,728 INFO L93 Difference]: Finished difference Result 799 states and 1016 transitions. [2025-02-06 14:32:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 14:32:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2025-02-06 14:32:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:12,731 INFO L225 Difference]: With dead ends: 799 [2025-02-06 14:32:12,731 INFO L226 Difference]: Without dead ends: 446 [2025-02-06 14:32:12,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 170 SyntacticMatches, 12 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-02-06 14:32:12,733 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 143 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:12,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 619 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2025-02-06 14:32:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 436. [2025-02-06 14:32:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 347 states have (on average 1.1325648414985592) internal successors, (393), 339 states have internal predecessors, (393), 51 states have call successors, (51), 21 states have call predecessors, (51), 34 states have return successors, (109), 75 states have call predecessors, (109), 50 states have call successors, (109) [2025-02-06 14:32:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 553 transitions. [2025-02-06 14:32:12,747 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 553 transitions. Word has length 89 [2025-02-06 14:32:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:12,747 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 553 transitions. [2025-02-06 14:32:12,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 14:32:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 553 transitions. [2025-02-06 14:32:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-06 14:32:12,748 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:12,748 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:12,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 14:32:12,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:12,952 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:12,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1322709056, now seen corresponding path program 1 times [2025-02-06 14:32:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:12,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909842263] [2025-02-06 14:32:12,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:12,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-02-06 14:32:12,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-02-06 14:32:12,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:12,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-06 14:32:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909842263] [2025-02-06 14:32:13,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909842263] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:13,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529128726] [2025-02-06 14:32:13,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:13,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:13,152 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) [2025-02-06 14:32:13,153 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 [2025-02-06 14:32:13,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-02-06 14:32:13,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-02-06 14:32:13,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:13,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:13,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 14:32:13,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2025-02-06 14:32:13,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2025-02-06 14:32:13,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529128726] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:13,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:13,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31 [2025-02-06 14:32:13,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489678071] [2025-02-06 14:32:13,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:13,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 14:32:13,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:13,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 14:32:13,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2025-02-06 14:32:13,502 INFO L87 Difference]: Start difference. First operand 436 states and 553 transitions. Second operand has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-02-06 14:32:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:14,461 INFO L93 Difference]: Finished difference Result 909 states and 1241 transitions. [2025-02-06 14:32:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-06 14:32:14,461 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 92 [2025-02-06 14:32:14,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:14,464 INFO L225 Difference]: With dead ends: 909 [2025-02-06 14:32:14,464 INFO L226 Difference]: Without dead ends: 548 [2025-02-06 14:32:14,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=612, Invalid=4080, Unknown=0, NotChecked=0, Total=4692 [2025-02-06 14:32:14,468 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 334 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:14,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 406 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 14:32:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2025-02-06 14:32:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 436. [2025-02-06 14:32:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 344 states have (on average 1.1133720930232558) internal successors, (383), 343 states have internal predecessors, (383), 52 states have call successors, (52), 21 states have call predecessors, (52), 36 states have return successors, (116), 71 states have call predecessors, (116), 51 states have call successors, (116) [2025-02-06 14:32:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 551 transitions. [2025-02-06 14:32:14,491 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 551 transitions. Word has length 92 [2025-02-06 14:32:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:14,492 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 551 transitions. [2025-02-06 14:32:14,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-02-06 14:32:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 551 transitions. [2025-02-06 14:32:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 14:32:14,493 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:14,493 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:14,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 14:32:14,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:14,697 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:14,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash 669238849, now seen corresponding path program 1 times [2025-02-06 14:32:14,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:14,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527888977] [2025-02-06 14:32:14,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:14,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:14,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:32:14,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:32:14,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:14,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 47 proven. 72 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:32:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527888977] [2025-02-06 14:32:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527888977] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393450105] [2025-02-06 14:32:14,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:14,910 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) [2025-02-06 14:32:14,911 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 [2025-02-06 14:32:14,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:32:14,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:32:14,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:14,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:14,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 14:32:14,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-02-06 14:32:15,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-02-06 14:32:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393450105] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:15,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:15,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9, 11] total 36 [2025-02-06 14:32:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239993338] [2025-02-06 14:32:15,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:15,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 14:32:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:15,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 14:32:15,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 14:32:15,406 INFO L87 Difference]: Start difference. First operand 436 states and 551 transitions. Second operand has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-02-06 14:32:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:17,035 INFO L93 Difference]: Finished difference Result 1201 states and 1754 transitions. [2025-02-06 14:32:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-02-06 14:32:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 93 [2025-02-06 14:32:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:17,040 INFO L225 Difference]: With dead ends: 1201 [2025-02-06 14:32:17,040 INFO L226 Difference]: Without dead ends: 801 [2025-02-06 14:32:17,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3213 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1392, Invalid=9950, Unknown=0, NotChecked=0, Total=11342 [2025-02-06 14:32:17,047 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 383 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:17,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 509 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 14:32:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2025-02-06 14:32:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 602. [2025-02-06 14:32:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 479 states have (on average 1.11482254697286) internal successors, (534), 464 states have internal predecessors, (534), 69 states have call successors, (69), 20 states have call predecessors, (69), 50 states have return successors, (307), 117 states have call predecessors, (307), 68 states have call successors, (307) [2025-02-06 14:32:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 910 transitions. [2025-02-06 14:32:17,087 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 910 transitions. Word has length 93 [2025-02-06 14:32:17,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:17,088 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 910 transitions. [2025-02-06 14:32:17,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 30 states have internal predecessors, (117), 16 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-02-06 14:32:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 910 transitions. [2025-02-06 14:32:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-06 14:32:17,089 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:17,090 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:17,096 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 [2025-02-06 14:32:17,290 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,SelfDestructingSolverStorable25 [2025-02-06 14:32:17,291 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:17,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1499915559, now seen corresponding path program 1 times [2025-02-06 14:32:17,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:17,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923455633] [2025-02-06 14:32:17,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:17,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 14:32:17,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 14:32:17,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:17,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-02-06 14:32:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923455633] [2025-02-06 14:32:17,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923455633] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318971572] [2025-02-06 14:32:17,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:17,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:17,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:17,339 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) [2025-02-06 14:32:17,341 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 [2025-02-06 14:32:17,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-06 14:32:17,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 14:32:17,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:17,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:17,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:17,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-06 14:32:17,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 33 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-06 14:32:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318971572] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:17,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:17,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 21 [2025-02-06 14:32:17,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883347288] [2025-02-06 14:32:17,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:17,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 14:32:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:17,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 14:32:17,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2025-02-06 14:32:17,724 INFO L87 Difference]: Start difference. First operand 602 states and 910 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-06 14:32:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:17,936 INFO L93 Difference]: Finished difference Result 1147 states and 1887 transitions. [2025-02-06 14:32:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 14:32:17,936 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 106 [2025-02-06 14:32:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:17,939 INFO L225 Difference]: With dead ends: 1147 [2025-02-06 14:32:17,939 INFO L226 Difference]: Without dead ends: 612 [2025-02-06 14:32:17,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2025-02-06 14:32:17,943 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 202 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:17,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 471 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:17,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2025-02-06 14:32:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 602. [2025-02-06 14:32:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 479 states have (on average 1.11482254697286) internal successors, (534), 464 states have internal predecessors, (534), 69 states have call successors, (69), 20 states have call predecessors, (69), 50 states have return successors, (305), 117 states have call predecessors, (305), 68 states have call successors, (305) [2025-02-06 14:32:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 908 transitions. [2025-02-06 14:32:17,970 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 908 transitions. Word has length 106 [2025-02-06 14:32:17,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:17,971 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 908 transitions. [2025-02-06 14:32:17,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 16 states have internal predecessors, (94), 12 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-06 14:32:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 908 transitions. [2025-02-06 14:32:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-06 14:32:17,971 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:17,972 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:17,977 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 [2025-02-06 14:32:18,176 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,SelfDestructingSolverStorable26 [2025-02-06 14:32:18,176 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:18,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:18,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1413499777, now seen corresponding path program 2 times [2025-02-06 14:32:18,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:18,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506824826] [2025-02-06 14:32:18,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:18,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:18,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-02-06 14:32:18,184 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 14:32:18,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:18,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-02-06 14:32:18,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506824826] [2025-02-06 14:32:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506824826] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855799531] [2025-02-06 14:32:18,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:18,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:18,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:18,382 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) [2025-02-06 14:32:18,384 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 [2025-02-06 14:32:18,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-02-06 14:32:18,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 14:32:18,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:18,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:18,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:18,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-02-06 14:32:18,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-02-06 14:32:18,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855799531] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:18,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:18,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-02-06 14:32:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164088019] [2025-02-06 14:32:18,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:18,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-06 14:32:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:18,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-06 14:32:18,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 14:32:18,911 INFO L87 Difference]: Start difference. First operand 602 states and 908 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-06 14:32:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:19,382 INFO L93 Difference]: Finished difference Result 1439 states and 2478 transitions. [2025-02-06 14:32:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-06 14:32:19,382 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 107 [2025-02-06 14:32:19,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:19,389 INFO L225 Difference]: With dead ends: 1439 [2025-02-06 14:32:19,389 INFO L226 Difference]: Without dead ends: 1436 [2025-02-06 14:32:19,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=489, Invalid=3051, Unknown=0, NotChecked=0, Total=3540 [2025-02-06 14:32:19,390 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 49 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:19,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 738 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-02-06 14:32:19,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 899. [2025-02-06 14:32:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 719 states have (on average 1.094575799721836) internal successors, (787), 689 states have internal predecessors, (787), 96 states have call successors, (96), 20 states have call predecessors, (96), 80 states have return successors, (668), 189 states have call predecessors, (668), 95 states have call successors, (668) [2025-02-06 14:32:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1551 transitions. [2025-02-06 14:32:19,439 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1551 transitions. Word has length 107 [2025-02-06 14:32:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:19,439 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1551 transitions. [2025-02-06 14:32:19,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-06 14:32:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1551 transitions. [2025-02-06 14:32:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-02-06 14:32:19,440 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:19,440 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:19,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:19,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-06 14:32:19,641 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:19,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash 868820135, now seen corresponding path program 1 times [2025-02-06 14:32:19,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:19,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374711012] [2025-02-06 14:32:19,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:19,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:19,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-06 14:32:19,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-06 14:32:19,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:19,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-02-06 14:32:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374711012] [2025-02-06 14:32:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374711012] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943580095] [2025-02-06 14:32:19,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:19,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:19,825 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) [2025-02-06 14:32:19,828 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 [2025-02-06 14:32:19,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-02-06 14:32:19,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-02-06 14:32:19,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:19,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:19,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 14:32:19,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 14:32:19,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-02-06 14:32:20,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943580095] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:20,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:20,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2025-02-06 14:32:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345830305] [2025-02-06 14:32:20,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:20,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 14:32:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:20,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 14:32:20,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 14:32:20,314 INFO L87 Difference]: Start difference. First operand 899 states and 1551 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-02-06 14:32:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:20,701 INFO L93 Difference]: Finished difference Result 1756 states and 3449 transitions. [2025-02-06 14:32:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-06 14:32:20,702 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 108 [2025-02-06 14:32:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:20,713 INFO L225 Difference]: With dead ends: 1756 [2025-02-06 14:32:20,713 INFO L226 Difference]: Without dead ends: 1754 [2025-02-06 14:32:20,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=1856, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 14:32:20,715 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:20,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 872 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2025-02-06 14:32:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1151. [2025-02-06 14:32:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 917 states have (on average 1.0708833151581243) internal successors, (982), 884 states have internal predecessors, (982), 121 states have call successors, (121), 20 states have call predecessors, (121), 109 states have return successors, (1337), 246 states have call predecessors, (1337), 120 states have call successors, (1337) [2025-02-06 14:32:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2440 transitions. [2025-02-06 14:32:20,799 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2440 transitions. Word has length 108 [2025-02-06 14:32:20,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:20,799 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 2440 transitions. [2025-02-06 14:32:20,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-02-06 14:32:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2440 transitions. [2025-02-06 14:32:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-02-06 14:32:20,801 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:20,801 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:20,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:21,003 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,SelfDestructingSolverStorable28 [2025-02-06 14:32:21,004 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:21,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 823188144, now seen corresponding path program 1 times [2025-02-06 14:32:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:21,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184325677] [2025-02-06 14:32:21,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:21,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-06 14:32:21,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-06 14:32:21,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:21,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-02-06 14:32:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184325677] [2025-02-06 14:32:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184325677] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976594467] [2025-02-06 14:32:21,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:21,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:21,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:21,171 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) [2025-02-06 14:32:21,172 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 [2025-02-06 14:32:21,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-06 14:32:21,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-06 14:32:21,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:21,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:21,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 14:32:21,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-02-06 14:32:21,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-02-06 14:32:21,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976594467] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:21,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:21,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2025-02-06 14:32:21,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513076387] [2025-02-06 14:32:21,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:21,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 14:32:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:21,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 14:32:21,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2025-02-06 14:32:21,468 INFO L87 Difference]: Start difference. First operand 1151 states and 2440 transitions. Second operand has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:32:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:21,682 INFO L93 Difference]: Finished difference Result 2296 states and 5035 transitions. [2025-02-06 14:32:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:32:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 142 [2025-02-06 14:32:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:21,691 INFO L225 Difference]: With dead ends: 2296 [2025-02-06 14:32:21,692 INFO L226 Difference]: Without dead ends: 1215 [2025-02-06 14:32:21,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 276 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2025-02-06 14:32:21,701 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 145 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:21,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 382 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2025-02-06 14:32:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1174. [2025-02-06 14:32:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 935 states have (on average 1.0695187165775402) internal successors, (1000), 902 states have internal predecessors, (1000), 123 states have call successors, (123), 20 states have call predecessors, (123), 112 states have return successors, (1353), 251 states have call predecessors, (1353), 122 states have call successors, (1353) [2025-02-06 14:32:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 2476 transitions. [2025-02-06 14:32:21,781 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 2476 transitions. Word has length 142 [2025-02-06 14:32:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:21,782 INFO L471 AbstractCegarLoop]: Abstraction has 1174 states and 2476 transitions. [2025-02-06 14:32:21,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 13 states have internal predecessors, (80), 9 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:32:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 2476 transitions. [2025-02-06 14:32:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-02-06 14:32:21,784 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:21,784 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-06 14:32:21,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 14:32:21,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:21,988 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:21,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:21,988 INFO L85 PathProgramCache]: Analyzing trace with hash -420725685, now seen corresponding path program 2 times [2025-02-06 14:32:21,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:21,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297265593] [2025-02-06 14:32:21,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:21,994 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-02-06 14:32:22,002 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-02-06 14:32:22,002 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:22,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 156 proven. 149 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2025-02-06 14:32:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297265593] [2025-02-06 14:32:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297265593] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110176118] [2025-02-06 14:32:22,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:22,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:22,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:22,207 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) [2025-02-06 14:32:22,208 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 [2025-02-06 14:32:22,240 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-02-06 14:32:22,265 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-02-06 14:32:22,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:22,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:22,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:22,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 141 proven. 143 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-02-06 14:32:22,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 141 proven. 144 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2025-02-06 14:32:22,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110176118] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:22,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:22,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 23 [2025-02-06 14:32:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049043031] [2025-02-06 14:32:22,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:22,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:32:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:22,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:32:22,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:32:22,650 INFO L87 Difference]: Start difference. First operand 1174 states and 2476 transitions. Second operand has 23 states, 22 states have (on average 5.136363636363637) internal successors, (113), 19 states have internal predecessors, (113), 13 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2025-02-06 14:32:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:22,966 INFO L93 Difference]: Finished difference Result 2288 states and 5719 transitions. [2025-02-06 14:32:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 14:32:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.136363636363637) internal successors, (113), 19 states have internal predecessors, (113), 13 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 179 [2025-02-06 14:32:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:22,975 INFO L225 Difference]: With dead ends: 2288 [2025-02-06 14:32:22,975 INFO L226 Difference]: Without dead ends: 1199 [2025-02-06 14:32:22,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 346 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 14:32:22,986 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 167 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:22,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 335 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2025-02-06 14:32:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1130. [2025-02-06 14:32:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 895 states have (on average 1.0625698324022346) internal successors, (951), 875 states have internal predecessors, (951), 120 states have call successors, (120), 20 states have call predecessors, (120), 111 states have return successors, (1198), 234 states have call predecessors, (1198), 119 states have call successors, (1198) [2025-02-06 14:32:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2269 transitions. [2025-02-06 14:32:23,074 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2269 transitions. Word has length 179 [2025-02-06 14:32:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:23,075 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 2269 transitions. [2025-02-06 14:32:23,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.136363636363637) internal successors, (113), 19 states have internal predecessors, (113), 13 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2025-02-06 14:32:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2269 transitions. [2025-02-06 14:32:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-02-06 14:32:23,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:23,077 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 14:32:23,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 14:32:23,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:23,277 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:23,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash 689240016, now seen corresponding path program 3 times [2025-02-06 14:32:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:23,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904243279] [2025-02-06 14:32:23,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:32:23,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:23,283 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 161 statements into 7 equivalence classes. [2025-02-06 14:32:23,293 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 161 of 161 statements. [2025-02-06 14:32:23,294 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-06 14:32:23,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-06 14:32:23,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904243279] [2025-02-06 14:32:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904243279] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297339124] [2025-02-06 14:32:23,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:32:23,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:23,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:23,672 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) [2025-02-06 14:32:23,673 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 [2025-02-06 14:32:23,708 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 161 statements into 7 equivalence classes. [2025-02-06 14:32:23,741 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 161 of 161 statements. [2025-02-06 14:32:23,741 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-06 14:32:23,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:23,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 14:32:23,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2025-02-06 14:32:23,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2025-02-06 14:32:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297339124] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:24,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2025-02-06 14:32:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5978818] [2025-02-06 14:32:24,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:24,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-06 14:32:24,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:24,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-06 14:32:24,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 14:32:24,918 INFO L87 Difference]: Start difference. First operand 1130 states and 2269 transitions. Second operand has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-06 14:32:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:25,423 INFO L93 Difference]: Finished difference Result 2127 states and 4696 transitions. [2025-02-06 14:32:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-06 14:32:25,424 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 161 [2025-02-06 14:32:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:25,437 INFO L225 Difference]: With dead ends: 2127 [2025-02-06 14:32:25,438 INFO L226 Difference]: Without dead ends: 2122 [2025-02-06 14:32:25,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 293 SyntacticMatches, 13 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=591, Invalid=3699, Unknown=0, NotChecked=0, Total=4290 [2025-02-06 14:32:25,442 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 54 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:25,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 546 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2025-02-06 14:32:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1362. [2025-02-06 14:32:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1075 states have (on average 1.0474418604651163) internal successors, (1126), 1055 states have internal predecessors, (1126), 142 states have call successors, (142), 20 states have call predecessors, (142), 141 states have return successors, (1773), 286 states have call predecessors, (1773), 141 states have call successors, (1773) [2025-02-06 14:32:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 3041 transitions. [2025-02-06 14:32:25,561 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 3041 transitions. Word has length 161 [2025-02-06 14:32:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:25,562 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 3041 transitions. [2025-02-06 14:32:25,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-06 14:32:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 3041 transitions. [2025-02-06 14:32:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2025-02-06 14:32:25,565 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:25,565 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 1, 1, 1, 1] [2025-02-06 14:32:25,571 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 [2025-02-06 14:32:25,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:25,766 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:25,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1721723831, now seen corresponding path program 2 times [2025-02-06 14:32:25,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:25,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355406617] [2025-02-06 14:32:25,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:25,773 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 252 statements into 2 equivalence classes. [2025-02-06 14:32:25,787 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 252 of 252 statements. [2025-02-06 14:32:25,787 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:25,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 150 proven. 171 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2025-02-06 14:32:25,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:25,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355406617] [2025-02-06 14:32:25,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355406617] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:25,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991352836] [2025-02-06 14:32:25,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:25,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:25,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:25,946 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) [2025-02-06 14:32:25,948 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 [2025-02-06 14:32:25,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 252 statements into 2 equivalence classes. [2025-02-06 14:32:26,029 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 252 of 252 statements. [2025-02-06 14:32:26,029 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:26,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:26,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:26,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 597 proven. 176 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2025-02-06 14:32:26,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 110 proven. 365 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2025-02-06 14:32:26,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991352836] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:26,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:26,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 17] total 30 [2025-02-06 14:32:26,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966760301] [2025-02-06 14:32:26,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:26,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 14:32:26,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:26,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 14:32:26,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2025-02-06 14:32:26,860 INFO L87 Difference]: Start difference. First operand 1362 states and 3041 transitions. Second operand has 30 states, 28 states have (on average 5.928571428571429) internal successors, (166), 24 states have internal predecessors, (166), 17 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (25), 12 states have call predecessors, (25), 11 states have call successors, (25) [2025-02-06 14:32:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:27,464 INFO L93 Difference]: Finished difference Result 2829 states and 6681 transitions. [2025-02-06 14:32:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 14:32:27,465 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.928571428571429) internal successors, (166), 24 states have internal predecessors, (166), 17 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (25), 12 states have call predecessors, (25), 11 states have call successors, (25) Word has length 252 [2025-02-06 14:32:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:27,475 INFO L225 Difference]: With dead ends: 2829 [2025-02-06 14:32:27,475 INFO L226 Difference]: Without dead ends: 1258 [2025-02-06 14:32:27,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 483 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=339, Invalid=2313, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 14:32:27,489 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 322 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:27,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 866 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:32:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2025-02-06 14:32:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1178. [2025-02-06 14:32:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 937 states have (on average 1.0618996798292422) internal successors, (995), 909 states have internal predecessors, (995), 119 states have call successors, (119), 24 states have call predecessors, (119), 118 states have return successors, (1000), 244 states have call predecessors, (1000), 117 states have call successors, (1000) [2025-02-06 14:32:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 2114 transitions. [2025-02-06 14:32:27,587 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 2114 transitions. Word has length 252 [2025-02-06 14:32:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:27,592 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 2114 transitions. [2025-02-06 14:32:27,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.928571428571429) internal successors, (166), 24 states have internal predecessors, (166), 17 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (25), 12 states have call predecessors, (25), 11 states have call successors, (25) [2025-02-06 14:32:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 2114 transitions. [2025-02-06 14:32:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-02-06 14:32:27,596 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:27,597 INFO L218 NwaCegarLoop]: trace histogram [19, 17, 16, 14, 12, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 2, 1, 1, 1, 1, 1] [2025-02-06 14:32:27,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 14:32:27,801 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,SelfDestructingSolverStorable32 [2025-02-06 14:32:27,801 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:27,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1532969117, now seen corresponding path program 1 times [2025-02-06 14:32:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909438983] [2025-02-06 14:32:27,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:27,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:27,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-02-06 14:32:27,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-02-06 14:32:27,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:27,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 283 proven. 261 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2025-02-06 14:32:28,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:28,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909438983] [2025-02-06 14:32:28,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909438983] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:28,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986710438] [2025-02-06 14:32:28,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:32:28,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:28,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:28,057 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) [2025-02-06 14:32:28,059 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 [2025-02-06 14:32:28,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-02-06 14:32:28,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-02-06 14:32:28,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:28,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:28,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 14:32:28,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1020 proven. 138 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2025-02-06 14:32:28,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 198 proven. 391 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2025-02-06 14:32:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986710438] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:28,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 15] total 31 [2025-02-06 14:32:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966055235] [2025-02-06 14:32:28,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:28,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 14:32:28,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:28,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 14:32:28,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2025-02-06 14:32:28,824 INFO L87 Difference]: Start difference. First operand 1178 states and 2114 transitions. Second operand has 31 states, 29 states have (on average 5.655172413793103) internal successors, (164), 25 states have internal predecessors, (164), 17 states have call successors, (32), 9 states have call predecessors, (32), 7 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) [2025-02-06 14:32:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:29,445 INFO L93 Difference]: Finished difference Result 2512 states and 5135 transitions. [2025-02-06 14:32:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 14:32:29,446 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.655172413793103) internal successors, (164), 25 states have internal predecessors, (164), 17 states have call successors, (32), 9 states have call predecessors, (32), 7 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) Word has length 318 [2025-02-06 14:32:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:29,455 INFO L225 Difference]: With dead ends: 2512 [2025-02-06 14:32:29,455 INFO L226 Difference]: Without dead ends: 1400 [2025-02-06 14:32:29,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 618 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=314, Invalid=2338, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 14:32:29,464 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 319 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:29,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 771 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:32:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2025-02-06 14:32:29,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1272. [2025-02-06 14:32:29,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1013 states have (on average 1.0621915103652517) internal successors, (1076), 985 states have internal predecessors, (1076), 121 states have call successors, (121), 29 states have call predecessors, (121), 134 states have return successors, (920), 257 states have call predecessors, (920), 120 states have call successors, (920) [2025-02-06 14:32:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 2117 transitions. [2025-02-06 14:32:29,532 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 2117 transitions. Word has length 318 [2025-02-06 14:32:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:29,532 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 2117 transitions. [2025-02-06 14:32:29,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.655172413793103) internal successors, (164), 25 states have internal predecessors, (164), 17 states have call successors, (32), 9 states have call predecessors, (32), 7 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) [2025-02-06 14:32:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 2117 transitions. [2025-02-06 14:32:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2025-02-06 14:32:29,535 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:29,535 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 12, 11, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 1, 1, 1, 1] [2025-02-06 14:32:29,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:29,735 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,SelfDestructingSolverStorable33 [2025-02-06 14:32:29,735 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:29,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:29,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1272253316, now seen corresponding path program 3 times [2025-02-06 14:32:29,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:29,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031802139] [2025-02-06 14:32:29,736 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:32:29,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:29,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 270 statements into 9 equivalence classes. [2025-02-06 14:32:29,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 42 of 270 statements. [2025-02-06 14:32:29,743 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 14:32:29,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2025-02-06 14:32:29,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:29,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031802139] [2025-02-06 14:32:29,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031802139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:29,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036559063] [2025-02-06 14:32:29,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:32:29,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:29,767 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:29,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 14:32:29,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 270 statements into 9 equivalence classes. [2025-02-06 14:32:29,824 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 42 of 270 statements. [2025-02-06 14:32:29,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 14:32:29,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:29,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 14:32:29,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2025-02-06 14:32:29,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:32:29,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036559063] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:32:29,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:32:29,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2025-02-06 14:32:29,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209636101] [2025-02-06 14:32:29,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:32:29,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:32:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:29,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:32:29,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:32:29,868 INFO L87 Difference]: Start difference. First operand 1272 states and 2117 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-06 14:32:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:29,926 INFO L93 Difference]: Finished difference Result 1768 states and 2959 transitions. [2025-02-06 14:32:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:32:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 270 [2025-02-06 14:32:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:29,930 INFO L225 Difference]: With dead ends: 1768 [2025-02-06 14:32:29,930 INFO L226 Difference]: Without dead ends: 579 [2025-02-06 14:32:29,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:32:29,934 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:29,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 104 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:32:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2025-02-06 14:32:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2025-02-06 14:32:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 459 states have (on average 1.0479302832244008) internal successors, (481), 458 states have internal predecessors, (481), 62 states have call successors, (62), 29 states have call predecessors, (62), 56 states have return successors, (184), 91 states have call predecessors, (184), 61 states have call successors, (184) [2025-02-06 14:32:29,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 727 transitions. [2025-02-06 14:32:29,959 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 727 transitions. Word has length 270 [2025-02-06 14:32:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:29,960 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 727 transitions. [2025-02-06 14:32:29,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-06 14:32:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 727 transitions. [2025-02-06 14:32:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2025-02-06 14:32:29,961 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:29,961 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 10, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 1, 1, 1, 1] [2025-02-06 14:32:29,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 14:32:30,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-06 14:32:30,166 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:30,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2070810380, now seen corresponding path program 4 times [2025-02-06 14:32:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:30,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403081863] [2025-02-06 14:32:30,167 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:32:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:30,175 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 253 statements into 2 equivalence classes. [2025-02-06 14:32:30,179 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 152 of 253 statements. [2025-02-06 14:32:30,179 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:32:30,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 276 proven. 196 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2025-02-06 14:32:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403081863] [2025-02-06 14:32:30,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403081863] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860126802] [2025-02-06 14:32:30,297 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:32:30,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:30,298 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:30,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-06 14:32:30,347 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 253 statements into 2 equivalence classes. [2025-02-06 14:32:30,369 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 152 of 253 statements. [2025-02-06 14:32:30,369 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:32:30,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:30,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:30,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 276 proven. 196 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2025-02-06 14:32:30,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 280 proven. 198 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2025-02-06 14:32:30,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860126802] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:30,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:30,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 19 [2025-02-06 14:32:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584213517] [2025-02-06 14:32:30,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:30,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 14:32:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:30,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 14:32:30,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:32:30,951 INFO L87 Difference]: Start difference. First operand 579 states and 727 transitions. Second operand has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 16 states have internal predecessors, (105), 12 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-02-06 14:32:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:31,205 INFO L93 Difference]: Finished difference Result 1162 states and 1502 transitions. [2025-02-06 14:32:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:32:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 16 states have internal predecessors, (105), 12 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 253 [2025-02-06 14:32:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:31,210 INFO L225 Difference]: With dead ends: 1162 [2025-02-06 14:32:31,210 INFO L226 Difference]: Without dead ends: 673 [2025-02-06 14:32:31,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 497 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2025-02-06 14:32:31,211 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 127 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:31,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 320 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2025-02-06 14:32:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 605. [2025-02-06 14:32:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 479 states have (on average 1.0459290187891441) internal successors, (501), 478 states have internal predecessors, (501), 66 states have call successors, (66), 29 states have call predecessors, (66), 58 states have return successors, (198), 97 states have call predecessors, (198), 65 states have call successors, (198) [2025-02-06 14:32:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 765 transitions. [2025-02-06 14:32:31,240 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 765 transitions. Word has length 253 [2025-02-06 14:32:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:31,240 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 765 transitions. [2025-02-06 14:32:31,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 16 states have internal predecessors, (105), 12 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-02-06 14:32:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 765 transitions. [2025-02-06 14:32:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2025-02-06 14:32:31,243 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:31,243 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2025-02-06 14:32:31,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:31,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-06 14:32:31,447 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:31,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash 531024577, now seen corresponding path program 5 times [2025-02-06 14:32:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319017310] [2025-02-06 14:32:31,448 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:32:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:31,453 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 253 statements into 9 equivalence classes. [2025-02-06 14:32:31,463 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 253 of 253 statements. [2025-02-06 14:32:31,463 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-06 14:32:31,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 164 proven. 250 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2025-02-06 14:32:32,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:32,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319017310] [2025-02-06 14:32:32,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319017310] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:32,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860525129] [2025-02-06 14:32:32,204 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:32:32,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:32,206 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:32,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-06 14:32:32,262 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 253 statements into 9 equivalence classes. [2025-02-06 14:32:32,301 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 253 of 253 statements. [2025-02-06 14:32:32,301 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-06 14:32:32,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:32,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-06 14:32:32,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2025-02-06 14:32:32,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2025-02-06 14:32:34,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860525129] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:34,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:34,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 29] total 57 [2025-02-06 14:32:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323184860] [2025-02-06 14:32:34,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:34,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-06 14:32:34,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:34,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-06 14:32:34,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=2892, Unknown=0, NotChecked=0, Total=3306 [2025-02-06 14:32:34,604 INFO L87 Difference]: Start difference. First operand 605 states and 765 transitions. Second operand has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2025-02-06 14:32:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:34,927 INFO L93 Difference]: Finished difference Result 715 states and 887 transitions. [2025-02-06 14:32:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-06 14:32:34,928 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) Word has length 253 [2025-02-06 14:32:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:34,931 INFO L225 Difference]: With dead ends: 715 [2025-02-06 14:32:34,931 INFO L226 Difference]: Without dead ends: 692 [2025-02-06 14:32:34,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 467 SyntacticMatches, 30 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3555 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=650, Invalid=4320, Unknown=0, NotChecked=0, Total=4970 [2025-02-06 14:32:34,933 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:34,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 689 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2025-02-06 14:32:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 548. [2025-02-06 14:32:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 432 states have (on average 1.0393518518518519) internal successors, (449), 435 states have internal predecessors, (449), 61 states have call successors, (61), 29 states have call predecessors, (61), 53 states have return successors, (178), 83 states have call predecessors, (178), 60 states have call successors, (178) [2025-02-06 14:32:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 688 transitions. [2025-02-06 14:32:34,958 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 688 transitions. Word has length 253 [2025-02-06 14:32:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:34,958 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 688 transitions. [2025-02-06 14:32:34,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2025-02-06 14:32:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 688 transitions. [2025-02-06 14:32:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2025-02-06 14:32:34,961 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:34,961 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 17, 16, 16, 15, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 4, 2, 1, 1, 1, 1] [2025-02-06 14:32:34,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-06 14:32:35,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-06 14:32:35,161 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:35,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -455013459, now seen corresponding path program 4 times [2025-02-06 14:32:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207117696] [2025-02-06 14:32:35,162 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:32:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:35,169 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 365 statements into 2 equivalence classes. [2025-02-06 14:32:35,176 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 218 of 365 statements. [2025-02-06 14:32:35,176 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:32:35,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 243 proven. 431 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2025-02-06 14:32:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207117696] [2025-02-06 14:32:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207117696] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794961563] [2025-02-06 14:32:35,296 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:32:35,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:35,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:35,297 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:35,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-06 14:32:35,377 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 365 statements into 2 equivalence classes. [2025-02-06 14:32:35,407 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 218 of 365 statements. [2025-02-06 14:32:35,407 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:32:35,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:35,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 14:32:35,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 1330 proven. 171 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2025-02-06 14:32:35,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 247 proven. 434 refuted. 0 times theorem prover too weak. 1616 trivial. 0 not checked. [2025-02-06 14:32:36,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794961563] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:36,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:36,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 17 [2025-02-06 14:32:36,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087025387] [2025-02-06 14:32:36,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:36,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 14:32:36,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:36,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 14:32:36,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-02-06 14:32:36,053 INFO L87 Difference]: Start difference. First operand 548 states and 688 transitions. Second operand has 17 states, 16 states have (on average 7.625) internal successors, (122), 15 states have internal predecessors, (122), 12 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2025-02-06 14:32:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:36,230 INFO L93 Difference]: Finished difference Result 1175 states and 1577 transitions. [2025-02-06 14:32:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 14:32:36,230 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.625) internal successors, (122), 15 states have internal predecessors, (122), 12 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 365 [2025-02-06 14:32:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:36,234 INFO L225 Difference]: With dead ends: 1175 [2025-02-06 14:32:36,234 INFO L226 Difference]: Without dead ends: 718 [2025-02-06 14:32:36,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 721 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-02-06 14:32:36,236 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 102 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:36,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 246 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2025-02-06 14:32:36,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 557. [2025-02-06 14:32:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 439 states have (on average 1.0387243735763099) internal successors, (456), 442 states have internal predecessors, (456), 62 states have call successors, (62), 29 states have call predecessors, (62), 54 states have return successors, (190), 85 states have call predecessors, (190), 61 states have call successors, (190) [2025-02-06 14:32:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 708 transitions. [2025-02-06 14:32:36,262 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 708 transitions. Word has length 365 [2025-02-06 14:32:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:36,262 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 708 transitions. [2025-02-06 14:32:36,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.625) internal successors, (122), 15 states have internal predecessors, (122), 12 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2025-02-06 14:32:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 708 transitions. [2025-02-06 14:32:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2025-02-06 14:32:36,265 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:36,265 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 23, 22, 20, 18, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 5, 4, 1, 1, 1, 1] [2025-02-06 14:32:36,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:36,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-06 14:32:36,466 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:36,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:36,466 INFO L85 PathProgramCache]: Analyzing trace with hash -163508769, now seen corresponding path program 5 times [2025-02-06 14:32:36,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:36,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730966943] [2025-02-06 14:32:36,466 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:32:36,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:36,474 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 480 statements into 19 equivalence classes. [2025-02-06 14:32:36,483 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 255 of 480 statements. [2025-02-06 14:32:36,483 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-06 14:32:36,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 341 proven. 372 refuted. 0 times theorem prover too weak. 3319 trivial. 0 not checked. [2025-02-06 14:32:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:36,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730966943] [2025-02-06 14:32:36,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730966943] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:36,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213774697] [2025-02-06 14:32:36,585 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:32:36,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:36,586 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:36,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-06 14:32:36,681 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 480 statements into 19 equivalence classes. [2025-02-06 14:32:36,723 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 255 of 480 statements. [2025-02-06 14:32:36,723 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-06 14:32:36,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:36,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 14:32:36,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 2204 proven. 6 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2025-02-06 14:32:36,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 374 proven. 430 refuted. 0 times theorem prover too weak. 3228 trivial. 0 not checked. [2025-02-06 14:32:37,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213774697] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:37,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:37,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 14:32:37,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359058192] [2025-02-06 14:32:37,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:37,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 14:32:37,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:37,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 14:32:37,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:32:37,356 INFO L87 Difference]: Start difference. First operand 557 states and 708 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 7 states have call successors, (20) [2025-02-06 14:32:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:37,506 INFO L93 Difference]: Finished difference Result 1020 states and 1356 transitions. [2025-02-06 14:32:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:32:37,506 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 7 states have call successors, (20) Word has length 480 [2025-02-06 14:32:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:37,509 INFO L225 Difference]: With dead ends: 1020 [2025-02-06 14:32:37,509 INFO L226 Difference]: Without dead ends: 526 [2025-02-06 14:32:37,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 952 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-02-06 14:32:37,512 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 60 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:37,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 175 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2025-02-06 14:32:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 521. [2025-02-06 14:32:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 411 states have (on average 1.0389294403892944) internal successors, (427), 413 states have internal predecessors, (427), 60 states have call successors, (60), 30 states have call predecessors, (60), 48 states have return successors, (155), 77 states have call predecessors, (155), 59 states have call successors, (155) [2025-02-06 14:32:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 642 transitions. [2025-02-06 14:32:37,539 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 642 transitions. Word has length 480 [2025-02-06 14:32:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:37,539 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 642 transitions. [2025-02-06 14:32:37,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (20), 5 states have call predecessors, (20), 7 states have call successors, (20) [2025-02-06 14:32:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 642 transitions. [2025-02-06 14:32:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-02-06 14:32:37,541 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:37,541 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 18, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 5, 4, 1, 1, 1, 1] [2025-02-06 14:32:37,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:37,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-06 14:32:37,745 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:37,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash 492623764, now seen corresponding path program 6 times [2025-02-06 14:32:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:37,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756953271] [2025-02-06 14:32:37,746 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:32:37,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:37,754 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 423 statements into 19 equivalence classes. [2025-02-06 14:32:37,760 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 128 of 423 statements. [2025-02-06 14:32:37,760 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-06 14:32:37,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 506 proven. 5 refuted. 0 times theorem prover too weak. 2576 trivial. 0 not checked. [2025-02-06 14:32:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756953271] [2025-02-06 14:32:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756953271] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324086247] [2025-02-06 14:32:37,825 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:32:37,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:37,827 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:37,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-06 14:32:37,916 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 423 statements into 19 equivalence classes. [2025-02-06 14:32:37,936 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 128 of 423 statements. [2025-02-06 14:32:37,936 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-06 14:32:37,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:37,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 14:32:37,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 673 proven. 6 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2025-02-06 14:32:37,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 576 proven. 12 refuted. 0 times theorem prover too weak. 2499 trivial. 0 not checked. [2025-02-06 14:32:38,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324086247] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:38,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:38,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 14:32:38,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933649399] [2025-02-06 14:32:38,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:38,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 14:32:38,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:38,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 14:32:38,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:32:38,438 INFO L87 Difference]: Start difference. First operand 521 states and 642 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2025-02-06 14:32:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:38,561 INFO L93 Difference]: Finished difference Result 943 states and 1206 transitions. [2025-02-06 14:32:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:32:38,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 423 [2025-02-06 14:32:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:38,564 INFO L225 Difference]: With dead ends: 943 [2025-02-06 14:32:38,564 INFO L226 Difference]: Without dead ends: 516 [2025-02-06 14:32:38,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 838 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-02-06 14:32:38,566 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 60 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:38,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 154 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-02-06 14:32:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 500. [2025-02-06 14:32:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 395 states have (on average 1.0354430379746835) internal successors, (409), 396 states have internal predecessors, (409), 59 states have call successors, (59), 30 states have call predecessors, (59), 44 states have return successors, (136), 73 states have call predecessors, (136), 58 states have call successors, (136) [2025-02-06 14:32:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 604 transitions. [2025-02-06 14:32:38,589 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 604 transitions. Word has length 423 [2025-02-06 14:32:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:38,589 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 604 transitions. [2025-02-06 14:32:38,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2025-02-06 14:32:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 604 transitions. [2025-02-06 14:32:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2025-02-06 14:32:38,591 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:38,591 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 17, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 5, 4, 3, 1, 1, 1, 1] [2025-02-06 14:32:38,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-06 14:32:38,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-06 14:32:38,795 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:38,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1131193568, now seen corresponding path program 7 times [2025-02-06 14:32:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782206080] [2025-02-06 14:32:38,795 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:32:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:38,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 385 statements into 1 equivalence classes. [2025-02-06 14:32:38,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 385 of 385 statements. [2025-02-06 14:32:38,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:38,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 440 proven. 276 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2025-02-06 14:32:38,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782206080] [2025-02-06 14:32:38,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782206080] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273698781] [2025-02-06 14:32:38,999 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:32:38,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:38,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:39,003 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:39,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-06 14:32:39,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 385 statements into 1 equivalence classes. [2025-02-06 14:32:39,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 385 of 385 statements. [2025-02-06 14:32:39,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:39,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:39,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 14:32:39,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 440 proven. 276 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2025-02-06 14:32:39,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 440 proven. 283 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2025-02-06 14:32:39,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273698781] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:39,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 17 [2025-02-06 14:32:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55240339] [2025-02-06 14:32:39,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:39,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 14:32:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:39,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 14:32:39,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-02-06 14:32:39,679 INFO L87 Difference]: Start difference. First operand 500 states and 604 transitions. Second operand has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 12 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 10 states have call successors, (15) [2025-02-06 14:32:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:39,840 INFO L93 Difference]: Finished difference Result 950 states and 1197 transitions. [2025-02-06 14:32:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 14:32:39,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 12 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 10 states have call successors, (15) Word has length 385 [2025-02-06 14:32:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:39,844 INFO L225 Difference]: With dead ends: 950 [2025-02-06 14:32:39,844 INFO L226 Difference]: Without dead ends: 571 [2025-02-06 14:32:39,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 761 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-02-06 14:32:39,845 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 105 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:39,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 221 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:39,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2025-02-06 14:32:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 501. [2025-02-06 14:32:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 396 states have (on average 1.0353535353535352) internal successors, (410), 397 states have internal predecessors, (410), 58 states have call successors, (58), 30 states have call predecessors, (58), 45 states have return successors, (134), 73 states have call predecessors, (134), 57 states have call successors, (134) [2025-02-06 14:32:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 602 transitions. [2025-02-06 14:32:39,866 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 602 transitions. Word has length 385 [2025-02-06 14:32:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:39,866 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 602 transitions. [2025-02-06 14:32:39,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 12 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 10 states have call successors, (15) [2025-02-06 14:32:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 602 transitions. [2025-02-06 14:32:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2025-02-06 14:32:39,868 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:39,868 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 19, 18, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 6, 4, 3, 1, 1, 1, 1] [2025-02-06 14:32:39,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:40,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:40,069 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:40,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1182871380, now seen corresponding path program 8 times [2025-02-06 14:32:40,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:40,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096734508] [2025-02-06 14:32:40,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:40,076 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 425 statements into 2 equivalence classes. [2025-02-06 14:32:40,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 425 of 425 statements. [2025-02-06 14:32:40,088 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:40,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3125 backedges. 658 proven. 357 refuted. 0 times theorem prover too weak. 2110 trivial. 0 not checked. [2025-02-06 14:32:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096734508] [2025-02-06 14:32:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096734508] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277715167] [2025-02-06 14:32:40,384 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:32:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:40,386 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:40,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-06 14:32:40,468 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 425 statements into 2 equivalence classes. [2025-02-06 14:32:40,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 425 of 425 statements. [2025-02-06 14:32:40,517 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:32:40,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:40,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:32:40,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3125 backedges. 706 proven. 369 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2025-02-06 14:32:40,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3125 backedges. 706 proven. 391 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2025-02-06 14:32:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277715167] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:41,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:41,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 19] total 24 [2025-02-06 14:32:41,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186797334] [2025-02-06 14:32:41,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:41,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 14:32:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:41,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 14:32:41,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:32:41,542 INFO L87 Difference]: Start difference. First operand 501 states and 602 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 22 states have internal predecessors, (129), 17 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (23), 9 states have call predecessors, (23), 15 states have call successors, (23) [2025-02-06 14:32:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:41,783 INFO L93 Difference]: Finished difference Result 959 states and 1177 transitions. [2025-02-06 14:32:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 14:32:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 22 states have internal predecessors, (129), 17 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (23), 9 states have call predecessors, (23), 15 states have call successors, (23) Word has length 425 [2025-02-06 14:32:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:41,786 INFO L225 Difference]: With dead ends: 959 [2025-02-06 14:32:41,786 INFO L226 Difference]: Without dead ends: 547 [2025-02-06 14:32:41,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 836 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 14:32:41,788 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 110 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:41,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 350 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2025-02-06 14:32:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 510. [2025-02-06 14:32:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 403 states have (on average 1.034739454094293) internal successors, (417), 404 states have internal predecessors, (417), 59 states have call successors, (59), 30 states have call predecessors, (59), 46 states have return successors, (137), 75 states have call predecessors, (137), 58 states have call successors, (137) [2025-02-06 14:32:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 613 transitions. [2025-02-06 14:32:41,809 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 613 transitions. Word has length 425 [2025-02-06 14:32:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:41,810 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 613 transitions. [2025-02-06 14:32:41,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 22 states have internal predecessors, (129), 17 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (23), 9 states have call predecessors, (23), 15 states have call successors, (23) [2025-02-06 14:32:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 613 transitions. [2025-02-06 14:32:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2025-02-06 14:32:41,812 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:41,812 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 19, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 4, 3, 1, 1, 1, 1] [2025-02-06 14:32:41,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-06 14:32:42,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-02-06 14:32:42,013 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:42,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1158477937, now seen corresponding path program 9 times [2025-02-06 14:32:42,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:42,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961207311] [2025-02-06 14:32:42,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:32:42,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:42,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 425 statements into 19 equivalence classes. [2025-02-06 14:32:42,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 81 of 425 statements. [2025-02-06 14:32:42,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 14:32:42,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 515 proven. 5 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2025-02-06 14:32:42,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:42,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961207311] [2025-02-06 14:32:42,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961207311] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:42,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916167060] [2025-02-06 14:32:42,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:32:42,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:42,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:42,071 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:42,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-06 14:32:42,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 425 statements into 19 equivalence classes. [2025-02-06 14:32:42,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 81 of 425 statements. [2025-02-06 14:32:42,175 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 14:32:42,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:42,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 14:32:42,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 513 proven. 7 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2025-02-06 14:32:42,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 513 proven. 7 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2025-02-06 14:32:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916167060] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:42,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-02-06 14:32:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392576160] [2025-02-06 14:32:42,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:42,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 14:32:42,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:42,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 14:32:42,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-02-06 14:32:42,630 INFO L87 Difference]: Start difference. First operand 510 states and 613 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-06 14:32:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:42,745 INFO L93 Difference]: Finished difference Result 899 states and 1101 transitions. [2025-02-06 14:32:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 14:32:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 425 [2025-02-06 14:32:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:42,748 INFO L225 Difference]: With dead ends: 899 [2025-02-06 14:32:42,748 INFO L226 Difference]: Without dead ends: 523 [2025-02-06 14:32:42,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 844 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:32:42,749 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 59 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:42,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 238 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2025-02-06 14:32:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 510. [2025-02-06 14:32:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 403 states have (on average 1.034739454094293) internal successors, (417), 404 states have internal predecessors, (417), 59 states have call successors, (59), 30 states have call predecessors, (59), 46 states have return successors, (133), 75 states have call predecessors, (133), 58 states have call successors, (133) [2025-02-06 14:32:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 609 transitions. [2025-02-06 14:32:42,771 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 609 transitions. Word has length 425 [2025-02-06 14:32:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:42,772 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 609 transitions. [2025-02-06 14:32:42,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-06 14:32:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 609 transitions. [2025-02-06 14:32:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2025-02-06 14:32:42,774 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:42,774 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 7, 4, 3, 1, 1, 1, 1] [2025-02-06 14:32:42,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-06 14:32:42,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:42,974 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:42,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash 714785708, now seen corresponding path program 10 times [2025-02-06 14:32:42,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:42,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790763535] [2025-02-06 14:32:42,975 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:32:42,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:42,982 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 405 statements into 2 equivalence classes. [2025-02-06 14:32:42,988 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 242 of 405 statements. [2025-02-06 14:32:42,988 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:32:42,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 578 proven. 310 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2025-02-06 14:32:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790763535] [2025-02-06 14:32:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790763535] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542621888] [2025-02-06 14:32:43,122 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:32:43,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:43,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:43,124 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:43,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-06 14:32:43,223 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 405 statements into 2 equivalence classes. [2025-02-06 14:32:43,254 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 242 of 405 statements. [2025-02-06 14:32:43,254 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 14:32:43,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:43,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:43,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 578 proven. 310 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2025-02-06 14:32:43,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 582 proven. 318 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2025-02-06 14:32:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542621888] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:44,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:44,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 17] total 19 [2025-02-06 14:32:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599758468] [2025-02-06 14:32:44,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:44,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 14:32:44,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:44,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 14:32:44,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:32:44,097 INFO L87 Difference]: Start difference. First operand 510 states and 609 transitions. Second operand has 19 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2025-02-06 14:32:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:44,292 INFO L93 Difference]: Finished difference Result 946 states and 1144 transitions. [2025-02-06 14:32:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 14:32:44,293 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) Word has length 405 [2025-02-06 14:32:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:44,295 INFO L225 Difference]: With dead ends: 946 [2025-02-06 14:32:44,295 INFO L226 Difference]: Without dead ends: 525 [2025-02-06 14:32:44,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 800 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2025-02-06 14:32:44,296 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 95 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:44,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 356 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-02-06 14:32:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 483. [2025-02-06 14:32:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 382 states have (on average 1.036649214659686) internal successors, (396), 383 states have internal predecessors, (396), 56 states have call successors, (56), 30 states have call predecessors, (56), 43 states have return successors, (121), 69 states have call predecessors, (121), 55 states have call successors, (121) [2025-02-06 14:32:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 573 transitions. [2025-02-06 14:32:44,320 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 573 transitions. Word has length 405 [2025-02-06 14:32:44,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:44,320 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 573 transitions. [2025-02-06 14:32:44,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2025-02-06 14:32:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 573 transitions. [2025-02-06 14:32:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-02-06 14:32:44,322 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:44,322 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 18, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 5, 4, 1, 1, 1, 1] [2025-02-06 14:32:44,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:44,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-02-06 14:32:44,523 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:44,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1748191936, now seen corresponding path program 11 times [2025-02-06 14:32:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:44,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371382513] [2025-02-06 14:32:44,523 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:32:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:44,531 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 423 statements into 14 equivalence classes. [2025-02-06 14:32:44,543 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 362 of 423 statements. [2025-02-06 14:32:44,543 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 14:32:44,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 578 proven. 729 refuted. 0 times theorem prover too weak. 1780 trivial. 0 not checked. [2025-02-06 14:32:44,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:44,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371382513] [2025-02-06 14:32:44,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371382513] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:44,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142691086] [2025-02-06 14:32:44,881 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:32:44,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:44,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:44,883 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:44,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-06 14:32:44,983 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 423 statements into 14 equivalence classes. [2025-02-06 14:32:45,030 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 362 of 423 statements. [2025-02-06 14:32:45,030 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 14:32:45,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:45,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 14:32:45,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 598 proven. 768 refuted. 0 times theorem prover too weak. 1721 trivial. 0 not checked. [2025-02-06 14:32:45,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 602 proven. 790 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2025-02-06 14:32:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142691086] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:46,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 23] total 34 [2025-02-06 14:32:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599183184] [2025-02-06 14:32:46,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:46,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 14:32:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:46,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 14:32:46,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 14:32:46,244 INFO L87 Difference]: Start difference. First operand 483 states and 573 transitions. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 23 states have call successors, (33), 1 states have call predecessors, (33), 13 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2025-02-06 14:32:46,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:46,897 INFO L93 Difference]: Finished difference Result 1032 states and 1278 transitions. [2025-02-06 14:32:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-06 14:32:46,897 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 23 states have call successors, (33), 1 states have call predecessors, (33), 13 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) Word has length 423 [2025-02-06 14:32:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:46,900 INFO L225 Difference]: With dead ends: 1032 [2025-02-06 14:32:46,900 INFO L226 Difference]: Without dead ends: 561 [2025-02-06 14:32:46,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 827 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=613, Invalid=3293, Unknown=0, NotChecked=0, Total=3906 [2025-02-06 14:32:46,904 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 217 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:46,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 631 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:32:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-02-06 14:32:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 515. [2025-02-06 14:32:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 409 states have (on average 1.0366748166259168) internal successors, (424), 407 states have internal predecessors, (424), 61 states have call successors, (61), 36 states have call predecessors, (61), 43 states have return successors, (119), 71 states have call predecessors, (119), 60 states have call successors, (119) [2025-02-06 14:32:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 604 transitions. [2025-02-06 14:32:46,926 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 604 transitions. Word has length 423 [2025-02-06 14:32:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:46,926 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 604 transitions. [2025-02-06 14:32:46,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 23 states have call successors, (33), 1 states have call predecessors, (33), 13 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2025-02-06 14:32:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 604 transitions. [2025-02-06 14:32:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2025-02-06 14:32:46,928 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:46,928 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2025-02-06 14:32:46,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:47,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:47,128 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:47,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:47,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1954980808, now seen corresponding path program 12 times [2025-02-06 14:32:47,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:47,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732438994] [2025-02-06 14:32:47,129 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:32:47,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:47,136 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 404 statements into 14 equivalence classes. [2025-02-06 14:32:47,166 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 404 of 404 statements. [2025-02-06 14:32:47,166 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-02-06 14:32:47,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 440 proven. 701 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2025-02-06 14:32:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732438994] [2025-02-06 14:32:48,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732438994] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372016320] [2025-02-06 14:32:48,556 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:32:48,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:48,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:48,558 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:48,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-02-06 14:32:48,705 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 404 statements into 14 equivalence classes. [2025-02-06 14:32:48,758 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 404 of 404 statements. [2025-02-06 14:32:48,758 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-02-06 14:32:48,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:48,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-06 14:32:48,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2025-02-06 14:32:49,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 585 proven. 468 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked. [2025-02-06 14:32:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372016320] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:54,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:54,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 37] total 68 [2025-02-06 14:32:54,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887155136] [2025-02-06 14:32:54,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:54,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-02-06 14:32:54,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:54,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-02-06 14:32:54,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=4133, Unknown=0, NotChecked=0, Total=4692 [2025-02-06 14:32:54,064 INFO L87 Difference]: Start difference. First operand 515 states and 604 transitions. Second operand has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) [2025-02-06 14:32:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:54,437 INFO L93 Difference]: Finished difference Result 736 states and 875 transitions. [2025-02-06 14:32:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-02-06 14:32:54,437 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) Word has length 404 [2025-02-06 14:32:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:54,440 INFO L225 Difference]: With dead ends: 736 [2025-02-06 14:32:54,440 INFO L226 Difference]: Without dead ends: 698 [2025-02-06 14:32:54,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 769 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5993 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=846, Invalid=5960, Unknown=0, NotChecked=0, Total=6806 [2025-02-06 14:32:54,442 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:54,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 671 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:32:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2025-02-06 14:32:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 573. [2025-02-06 14:32:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 454 states have (on average 1.0308370044052864) internal successors, (468), 452 states have internal predecessors, (468), 68 states have call successors, (68), 36 states have call predecessors, (68), 49 states have return successors, (128), 84 states have call predecessors, (128), 67 states have call successors, (128) [2025-02-06 14:32:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 664 transitions. [2025-02-06 14:32:54,466 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 664 transitions. Word has length 404 [2025-02-06 14:32:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:54,466 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 664 transitions. [2025-02-06 14:32:54,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 69 states have internal predecessors, (180), 17 states have call successors, (19), 1 states have call predecessors, (19), 21 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) [2025-02-06 14:32:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 664 transitions. [2025-02-06 14:32:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2025-02-06 14:32:54,468 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:54,468 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 21, 20, 17, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 5, 4, 1, 1, 1, 1, 1] [2025-02-06 14:32:54,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-02-06 14:32:54,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:54,669 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:54,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash -307304565, now seen corresponding path program 13 times [2025-02-06 14:32:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:54,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689397218] [2025-02-06 14:32:54,670 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:32:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:54,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-02-06 14:32:54,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-02-06 14:32:54,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:54,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3168 backedges. 512 proven. 225 refuted. 0 times theorem prover too weak. 2431 trivial. 0 not checked. [2025-02-06 14:32:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689397218] [2025-02-06 14:32:54,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689397218] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89069088] [2025-02-06 14:32:54,894 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:32:54,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:54,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:54,896 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:54,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-02-06 14:32:55,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 427 statements into 1 equivalence classes. [2025-02-06 14:32:55,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 427 of 427 statements. [2025-02-06 14:32:55,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:55,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:55,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 14:32:55,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3168 backedges. 1863 proven. 152 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2025-02-06 14:32:55,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3168 backedges. 304 proven. 512 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2025-02-06 14:32:55,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89069088] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:55,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:55,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 23 [2025-02-06 14:32:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872237868] [2025-02-06 14:32:55,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:55,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:32:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:55,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:32:55,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:32:55,749 INFO L87 Difference]: Start difference. First operand 573 states and 664 transitions. Second operand has 23 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 21 states have internal predecessors, (148), 11 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 15 states have call predecessors, (27), 9 states have call successors, (27) [2025-02-06 14:32:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:55,997 INFO L93 Difference]: Finished difference Result 1082 states and 1271 transitions. [2025-02-06 14:32:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:32:55,998 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 21 states have internal predecessors, (148), 11 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 15 states have call predecessors, (27), 9 states have call successors, (27) Word has length 427 [2025-02-06 14:32:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:56,001 INFO L225 Difference]: With dead ends: 1082 [2025-02-06 14:32:56,001 INFO L226 Difference]: Without dead ends: 542 [2025-02-06 14:32:56,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 838 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=916, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 14:32:56,002 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 77 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:56,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 435 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2025-02-06 14:32:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 470. [2025-02-06 14:32:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 373 states have (on average 1.03485254691689) internal successors, (386), 372 states have internal predecessors, (386), 59 states have call successors, (59), 36 states have call predecessors, (59), 37 states have return successors, (87), 61 states have call predecessors, (87), 58 states have call successors, (87) [2025-02-06 14:32:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 532 transitions. [2025-02-06 14:32:56,021 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 532 transitions. Word has length 427 [2025-02-06 14:32:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:56,021 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 532 transitions. [2025-02-06 14:32:56,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 21 states have internal predecessors, (148), 11 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 15 states have call predecessors, (27), 9 states have call successors, (27) [2025-02-06 14:32:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 532 transitions. [2025-02-06 14:32:56,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2025-02-06 14:32:56,024 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:56,024 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 29, 28, 28, 24, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 6, 5, 1, 1, 1, 1] [2025-02-06 14:32:56,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-02-06 14:32:56,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-02-06 14:32:56,224 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:56,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash -777750808, now seen corresponding path program 6 times [2025-02-06 14:32:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:56,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648769800] [2025-02-06 14:32:56,225 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:32:56,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:56,235 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 615 statements into 21 equivalence classes. [2025-02-06 14:32:56,246 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 320 of 615 statements. [2025-02-06 14:32:56,246 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-06 14:32:56,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 967 proven. 99 refuted. 0 times theorem prover too weak. 5670 trivial. 0 not checked. [2025-02-06 14:32:56,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648769800] [2025-02-06 14:32:56,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648769800] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237829288] [2025-02-06 14:32:56,368 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 14:32:56,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:56,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:56,370 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:56,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-02-06 14:32:56,532 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 615 statements into 21 equivalence classes. [2025-02-06 14:32:56,579 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 320 of 615 statements. [2025-02-06 14:32:56,579 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-06 14:32:56,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:56,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 14:32:56,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 1982 proven. 28 refuted. 0 times theorem prover too weak. 4726 trivial. 0 not checked. [2025-02-06 14:32:56,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6736 backedges. 1074 proven. 110 refuted. 0 times theorem prover too weak. 5552 trivial. 0 not checked. [2025-02-06 14:32:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237829288] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:57,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-02-06 14:32:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353288099] [2025-02-06 14:32:57,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:57,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 14:32:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:57,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 14:32:57,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-02-06 14:32:57,398 INFO L87 Difference]: Start difference. First operand 470 states and 532 transitions. Second operand has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 10 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (21), 6 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-06 14:32:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:57,586 INFO L93 Difference]: Finished difference Result 698 states and 806 transitions. [2025-02-06 14:32:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 14:32:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 10 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (21), 6 states have call predecessors, (21), 10 states have call successors, (21) Word has length 615 [2025-02-06 14:32:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:57,589 INFO L225 Difference]: With dead ends: 698 [2025-02-06 14:32:57,589 INFO L226 Difference]: Without dead ends: 455 [2025-02-06 14:32:57,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1219 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2025-02-06 14:32:57,591 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 118 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:57,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 163 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2025-02-06 14:32:57,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 445. [2025-02-06 14:32:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 354 states have (on average 1.0338983050847457) internal successors, (366), 352 states have internal predecessors, (366), 56 states have call successors, (56), 36 states have call predecessors, (56), 34 states have return successors, (75), 56 states have call predecessors, (75), 55 states have call successors, (75) [2025-02-06 14:32:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 497 transitions. [2025-02-06 14:32:57,620 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 497 transitions. Word has length 615 [2025-02-06 14:32:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:57,620 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 497 transitions. [2025-02-06 14:32:57,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 10 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (21), 6 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-06 14:32:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 497 transitions. [2025-02-06 14:32:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2025-02-06 14:32:57,623 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:32:57,623 INFO L218 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 29, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 12, 10, 8, 5, 1, 1, 1, 1] [2025-02-06 14:32:57,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-02-06 14:32:57,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-02-06 14:32:57,824 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:32:57,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:32:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash -825865177, now seen corresponding path program 7 times [2025-02-06 14:32:57,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:32:57,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162890977] [2025-02-06 14:32:57,824 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:32:57,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:32:57,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 673 statements into 1 equivalence classes. [2025-02-06 14:32:57,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 673 of 673 statements. [2025-02-06 14:32:57,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:57,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8033 backedges. 722 proven. 214 refuted. 0 times theorem prover too weak. 7097 trivial. 0 not checked. [2025-02-06 14:32:58,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:32:58,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162890977] [2025-02-06 14:32:58,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162890977] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:32:58,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129343890] [2025-02-06 14:32:58,087 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 14:32:58,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:58,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:32:58,089 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:32:58,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-02-06 14:32:58,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 673 statements into 1 equivalence classes. [2025-02-06 14:32:58,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 673 of 673 statements. [2025-02-06 14:32:58,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:32:58,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:32:58,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:32:58,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:32:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8033 backedges. 1226 proven. 475 refuted. 0 times theorem prover too weak. 6332 trivial. 0 not checked. [2025-02-06 14:32:58,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8033 backedges. 1230 proven. 493 refuted. 0 times theorem prover too weak. 6310 trivial. 0 not checked. [2025-02-06 14:32:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129343890] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:59,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:59,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 17] total 27 [2025-02-06 14:32:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949357005] [2025-02-06 14:32:59,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:59,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 14:32:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:59,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 14:32:59,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2025-02-06 14:32:59,696 INFO L87 Difference]: Start difference. First operand 445 states and 497 transitions. Second operand has 27 states, 25 states have (on average 6.16) internal successors, (154), 25 states have internal predecessors, (154), 18 states have call successors, (27), 3 states have call predecessors, (27), 10 states have return successors, (28), 15 states have call predecessors, (28), 16 states have call successors, (28) [2025-02-06 14:33:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:33:00,245 INFO L93 Difference]: Finished difference Result 566 states and 633 transitions. [2025-02-06 14:33:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 14:33:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 6.16) internal successors, (154), 25 states have internal predecessors, (154), 18 states have call successors, (27), 3 states have call predecessors, (27), 10 states have return successors, (28), 15 states have call predecessors, (28), 16 states have call successors, (28) Word has length 673 [2025-02-06 14:33:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:33:00,247 INFO L225 Difference]: With dead ends: 566 [2025-02-06 14:33:00,247 INFO L226 Difference]: Without dead ends: 472 [2025-02-06 14:33:00,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1322 SyntacticMatches, 9 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=361, Invalid=2089, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 14:33:00,248 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 205 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:33:00,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 763 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:33:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2025-02-06 14:33:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 451. [2025-02-06 14:33:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 361 states have (on average 1.0249307479224377) internal successors, (370), 356 states have internal predecessors, (370), 56 states have call successors, (56), 39 states have call predecessors, (56), 33 states have return successors, (70), 55 states have call predecessors, (70), 55 states have call successors, (70) [2025-02-06 14:33:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 496 transitions. [2025-02-06 14:33:00,267 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 496 transitions. Word has length 673 [2025-02-06 14:33:00,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:33:00,268 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 496 transitions. [2025-02-06 14:33:00,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 6.16) internal successors, (154), 25 states have internal predecessors, (154), 18 states have call successors, (27), 3 states have call predecessors, (27), 10 states have return successors, (28), 15 states have call predecessors, (28), 16 states have call successors, (28) [2025-02-06 14:33:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 496 transitions. [2025-02-06 14:33:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2025-02-06 14:33:00,270 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:33:00,270 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 26, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 10, 10, 7, 6, 1, 1, 1, 1] [2025-02-06 14:33:00,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-02-06 14:33:00,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:33:00,471 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:33:00,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:33:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -748933950, now seen corresponding path program 8 times [2025-02-06 14:33:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:33:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488592839] [2025-02-06 14:33:00,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:33:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:33:00,482 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 633 statements into 2 equivalence classes. [2025-02-06 14:33:00,505 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 633 of 633 statements. [2025-02-06 14:33:00,505 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:33:00,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:33:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 899 proven. 225 refuted. 0 times theorem prover too weak. 5958 trivial. 0 not checked. [2025-02-06 14:33:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:33:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488592839] [2025-02-06 14:33:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488592839] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:33:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537627588] [2025-02-06 14:33:00,726 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:33:00,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:33:00,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:33:00,727 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:33:00,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-02-06 14:33:00,898 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 633 statements into 2 equivalence classes. [2025-02-06 14:33:00,967 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 633 of 633 statements. [2025-02-06 14:33:00,968 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:33:00,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:33:00,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 14:33:00,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:33:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 899 proven. 225 refuted. 0 times theorem prover too weak. 5958 trivial. 0 not checked. [2025-02-06 14:33:01,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:33:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7082 backedges. 903 proven. 228 refuted. 0 times theorem prover too weak. 5951 trivial. 0 not checked. [2025-02-06 14:33:01,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537627588] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:33:01,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:33:01,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 15 [2025-02-06 14:33:01,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638175902] [2025-02-06 14:33:01,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:33:01,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 14:33:01,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:33:01,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 14:33:01,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:33:01,763 INFO L87 Difference]: Start difference. First operand 451 states and 496 transitions. Second operand has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-02-06 14:33:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:33:01,921 INFO L93 Difference]: Finished difference Result 478 states and 524 transitions. [2025-02-06 14:33:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 14:33:01,922 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 633 [2025-02-06 14:33:01,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:33:01,924 INFO L225 Difference]: With dead ends: 478 [2025-02-06 14:33:01,924 INFO L226 Difference]: Without dead ends: 460 [2025-02-06 14:33:01,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1258 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:33:01,925 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 67 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:33:01,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 186 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:33:01,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2025-02-06 14:33:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 451. [2025-02-06 14:33:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 361 states have (on average 1.0249307479224377) internal successors, (370), 356 states have internal predecessors, (370), 56 states have call successors, (56), 39 states have call predecessors, (56), 33 states have return successors, (68), 55 states have call predecessors, (68), 55 states have call successors, (68) [2025-02-06 14:33:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 494 transitions. [2025-02-06 14:33:01,944 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 494 transitions. Word has length 633 [2025-02-06 14:33:01,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:33:01,944 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 494 transitions. [2025-02-06 14:33:01,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 10 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2025-02-06 14:33:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 494 transitions. [2025-02-06 14:33:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2025-02-06 14:33:01,948 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:33:01,948 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1] [2025-02-06 14:33:01,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-02-06 14:33:02,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-02-06 14:33:02,153 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-06 14:33:02,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:33:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1447734537, now seen corresponding path program 9 times [2025-02-06 14:33:02,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:33:02,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321610413] [2025-02-06 14:33:02,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:33:02,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:33:02,165 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 653 statements into 26 equivalence classes. [2025-02-06 14:33:02,201 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) and asserted 653 of 653 statements. [2025-02-06 14:33:02,201 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2025-02-06 14:33:02,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:33:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1333 proven. 1858 refuted. 0 times theorem prover too weak. 4363 trivial. 0 not checked. [2025-02-06 14:33:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:33:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321610413] [2025-02-06 14:33:06,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321610413] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:33:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195267957] [2025-02-06 14:33:06,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:33:06,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:33:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:33:06,255 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:33:06,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-02-06 14:33:06,429 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 653 statements into 26 equivalence classes. [2025-02-06 14:33:06,522 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) and asserted 653 of 653 statements. [2025-02-06 14:33:06,522 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2025-02-06 14:33:06,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:33:06,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 133 conjuncts are in the unsatisfiable core [2025-02-06 14:33:06,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:33:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2025-02-06 14:33:07,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:33:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1543 proven. 1316 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2025-02-06 14:33:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195267957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:33:18,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:33:18,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 36, 46] total 80 [2025-02-06 14:33:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983235263] [2025-02-06 14:33:18,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:33:18,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2025-02-06 14:33:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:33:18,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2025-02-06 14:33:18,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=5714, Unknown=0, NotChecked=0, Total=6480 [2025-02-06 14:33:18,963 INFO L87 Difference]: Start difference. First operand 451 states and 494 transitions. Second operand has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (55), 55 states have call predecessors, (55), 20 states have call successors, (55) [2025-02-06 14:33:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:33:19,148 INFO L93 Difference]: Finished difference Result 501 states and 550 transitions. [2025-02-06 14:33:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-06 14:33:19,148 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (55), 55 states have call predecessors, (55), 20 states have call successors, (55) Word has length 653 [2025-02-06 14:33:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:33:19,150 INFO L225 Difference]: With dead ends: 501 [2025-02-06 14:33:19,150 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 14:33:19,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1442 GetRequests, 1266 SyntacticMatches, 92 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8642 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=885, Invalid=6425, Unknown=0, NotChecked=0, Total=7310 [2025-02-06 14:33:19,152 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:33:19,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 612 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:33:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 14:33:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 14:33:19,152 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) [2025-02-06 14:33:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 14:33:19,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 653 [2025-02-06 14:33:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:33:19,152 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 14:33:19,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 2.625) internal successors, (210), 81 states have internal predecessors, (210), 20 states have call successors, (22), 1 states have call predecessors, (22), 24 states have return successors, (55), 55 states have call predecessors, (55), 20 states have call successors, (55) [2025-02-06 14:33:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 14:33:19,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 14:33:19,155 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-02-06 14:33:19,156 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-02-06 14:33:19,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-02-06 14:33:19,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:33:19,359 INFO L422 BasicCegarLoop]: Path program histogram: [13, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:33:19,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.