./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_10-2.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_10-2.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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 14:31:07,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 14:31:07,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 14:31:07,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 14:31:07,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 14:31:07,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 14:31:07,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 14:31:07,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 14:31:07,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 14:31:07,297 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 14:31:07,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 14:31:07,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 14:31:07,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 14:31:07,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 14:31:07,298 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 14:31:07,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 14:31:07,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 14:31:07,299 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 14:31:07,300 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:31:07,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 14:31:07,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 14:31:07,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 14:31:07,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 14:31:07,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 14:31:07,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 14:31:07,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 14:31:07,301 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 -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2025-02-06 14:31:07,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 14:31:07,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 14:31:07,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 14:31:07,633 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 14:31:07,633 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 14:31:07,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2025-02-06 14:31:08,896 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aabe00ba7/0fb30a3631b94977b8403b10a3db6f20/FLAG06db0f17f [2025-02-06 14:31:09,096 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 14:31:09,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2025-02-06 14:31:09,101 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aabe00ba7/0fb30a3631b94977b8403b10a3db6f20/FLAG06db0f17f [2025-02-06 14:31:09,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aabe00ba7/0fb30a3631b94977b8403b10a3db6f20 [2025-02-06 14:31:09,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 14:31:09,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 14:31:09,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 14:31:09,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 14:31:09,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 14:31:09,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5540f65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09, skipping insertion in model container [2025-02-06 14:31:09,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 14:31:09,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:31:09,242 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 14:31:09,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:31:09,258 INFO L204 MainTranslator]: Completed translation [2025-02-06 14:31:09,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09 WrapperNode [2025-02-06 14:31:09,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 14:31:09,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 14:31:09,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 14:31:09,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 14:31:09,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,277 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-02-06 14:31:09,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 14:31:09,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 14:31:09,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 14:31:09,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 14:31:09,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,289 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 14:31:09,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,291 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 14:31:09,293 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 14:31:09,293 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 14:31:09,293 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 14:31:09,294 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (1/1) ... [2025-02-06 14:31:09,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:31:09,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:09,318 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 14:31:09,327 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 14:31:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 14:31:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 14:31:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 14:31:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 14:31:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-02-06 14:31:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-02-06 14:31:09,382 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 14:31:09,384 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 14:31:09,474 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: havoc #t~ret4;havoc #t~ret5; [2025-02-06 14:31:09,482 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-02-06 14:31:09,483 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 14:31:09,490 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 14:31:09,491 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 14:31:09,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:31:09 BoogieIcfgContainer [2025-02-06 14:31:09,492 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 14:31:09,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 14:31:09,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 14:31:09,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 14:31:09,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:31:09" (1/3) ... [2025-02-06 14:31:09,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3809c70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:31:09, skipping insertion in model container [2025-02-06 14:31:09,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:31:09" (2/3) ... [2025-02-06 14:31:09,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3809c70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:31:09, skipping insertion in model container [2025-02-06 14:31:09,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:31:09" (3/3) ... [2025-02-06 14:31:09,499 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2025-02-06 14:31:09,510 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 14:31:09,512 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_10-2.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-02-06 14:31:09,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 14:31:09,561 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;@1224b770, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 14:31:09,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 14:31:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 14:31:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 14:31:09,569 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:09,569 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:09,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:09,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1976054303, now seen corresponding path program 1 times [2025-02-06 14:31:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:09,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873036879] [2025-02-06 14:31:09,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:09,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:09,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 14:31:09,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 14:31:09,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:09,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:09,689 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 14:31:09,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:09,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873036879] [2025-02-06 14:31:09,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873036879] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:09,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:09,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 14:31:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912221930] [2025-02-06 14:31:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:09,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 14:31:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:09,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 14:31:09,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 14:31:09,713 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 14:31:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:09,748 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-02-06 14:31:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 14:31:09,750 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 14:31:09,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:09,754 INFO L225 Difference]: With dead ends: 38 [2025-02-06 14:31:09,754 INFO L226 Difference]: Without dead ends: 24 [2025-02-06 14:31:09,756 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 14:31:09,757 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 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 14:31:09,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-06 14:31:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-02-06 14:31:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 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 14:31:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-06 14:31:09,780 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-02-06 14:31:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:09,780 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-06 14:31:09,780 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 14:31:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-06 14:31:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 14:31:09,781 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:09,781 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:09,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 14:31:09,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:09,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1128141252, now seen corresponding path program 1 times [2025-02-06 14:31:09,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:09,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121124849] [2025-02-06 14:31:09,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:09,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:09,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 14:31:09,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 14:31:09,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:09,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:09,825 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 14:31:09,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121124849] [2025-02-06 14:31:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121124849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:09,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:31:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115649628] [2025-02-06 14:31:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:09,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:09,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:09,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:09,827 INFO L87 Difference]: Start difference. First operand 22 states and 25 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 14:31:09,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:09,881 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-02-06 14:31:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:09,881 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 14:31:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:09,882 INFO L225 Difference]: With dead ends: 24 [2025-02-06 14:31:09,882 INFO L226 Difference]: Without dead ends: 22 [2025-02-06 14:31:09,882 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 14:31:09,882 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:09,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-06 14:31:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-02-06 14:31:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 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 14:31:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-02-06 14:31:09,886 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-02-06 14:31:09,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:09,887 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-02-06 14:31:09,887 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 14:31:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-02-06 14:31:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 14:31:09,887 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:09,887 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:09,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 14:31:09,888 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:09,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2023302297, now seen corresponding path program 1 times [2025-02-06 14:31:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577004319] [2025-02-06 14:31:09,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:09,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 14:31:09,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 14:31:09,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:09,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:09,981 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 14:31:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:09,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577004319] [2025-02-06 14:31:09,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577004319] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:09,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:09,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:31:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441240290] [2025-02-06 14:31:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:09,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:09,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:09,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:09,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:09,983 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:10,019 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-02-06 14:31:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-06 14:31:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:10,020 INFO L225 Difference]: With dead ends: 34 [2025-02-06 14:31:10,020 INFO L226 Difference]: Without dead ends: 32 [2025-02-06 14:31:10,020 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 14:31:10,021 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:10,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-06 14:31:10,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-02-06 14:31:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 14:31:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-02-06 14:31:10,027 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2025-02-06 14:31:10,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:10,027 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-02-06 14:31:10,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:10,027 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-02-06 14:31:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 14:31:10,028 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:10,028 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] [2025-02-06 14:31:10,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 14:31:10,028 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:10,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1013164860, now seen corresponding path program 1 times [2025-02-06 14:31:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356421264] [2025-02-06 14:31:10,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:10,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:31:10,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:31:10,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:10,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:10,107 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 14:31:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356421264] [2025-02-06 14:31:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356421264] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693249607] [2025-02-06 14:31:10,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:10,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:10,110 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 14:31:10,116 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 14:31:10,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 14:31:10,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 14:31:10,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:10,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:10,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 14:31:10,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:31:10,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:10,338 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 14:31:10,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693249607] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:10,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-02-06 14:31:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901712974] [2025-02-06 14:31:10,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:10,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 14:31:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:10,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 14:31:10,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:31:10,341 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:10,805 INFO L93 Difference]: Finished difference Result 142 states and 214 transitions. [2025-02-06 14:31:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 14:31:10,805 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2025-02-06 14:31:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:10,807 INFO L225 Difference]: With dead ends: 142 [2025-02-06 14:31:10,807 INFO L226 Difference]: Without dead ends: 109 [2025-02-06 14:31:10,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2025-02-06 14:31:10,808 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 79 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:10,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 244 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:31:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-06 14:31:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2025-02-06 14:31:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 71 states have internal predecessors, (76), 12 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (43), 15 states have call predecessors, (43), 11 states have call successors, (43) [2025-02-06 14:31:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 131 transitions. [2025-02-06 14:31:10,827 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 131 transitions. Word has length 24 [2025-02-06 14:31:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:10,827 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 131 transitions. [2025-02-06 14:31:10,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 131 transitions. [2025-02-06 14:31:10,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 14:31:10,828 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:10,828 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:10,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:11,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:11,032 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:11,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1779932149, now seen corresponding path program 2 times [2025-02-06 14:31:11,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:11,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352389336] [2025-02-06 14:31:11,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:11,043 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 14:31:11,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:31:11,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:11,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-06 14:31:11,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352389336] [2025-02-06 14:31:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352389336] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914027005] [2025-02-06 14:31:11,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:11,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:11,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:11,145 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 14:31:11,146 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 14:31:11,171 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 14:31:11,185 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:31:11,186 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:11,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:11,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 14:31:11,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-06 14:31:11,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:31:11,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914027005] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:11,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:31:11,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-06 14:31:11,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7764257] [2025-02-06 14:31:11,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:11,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:11,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:11,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:11,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:31:11,226 INFO L87 Difference]: Start difference. First operand 90 states and 131 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:11,255 INFO L93 Difference]: Finished difference Result 98 states and 142 transitions. [2025-02-06 14:31:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 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 14:31:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:11,258 INFO L225 Difference]: With dead ends: 98 [2025-02-06 14:31:11,259 INFO L226 Difference]: Without dead ends: 97 [2025-02-06 14:31:11,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:31:11,260 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:11,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-06 14:31:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2025-02-06 14:31:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 12 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (43), 17 states have call predecessors, (43), 11 states have call successors, (43) [2025-02-06 14:31:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2025-02-06 14:31:11,276 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 42 [2025-02-06 14:31:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:11,280 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2025-02-06 14:31:11,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:31:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2025-02-06 14:31:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-06 14:31:11,281 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:11,281 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:11,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:11,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:11,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:11,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash -213800611, now seen corresponding path program 1 times [2025-02-06 14:31:11,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:11,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143815253] [2025-02-06 14:31:11,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:11,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 14:31:11,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 14:31:11,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:11,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 14:31:11,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:11,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143815253] [2025-02-06 14:31:11,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143815253] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:11,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642785089] [2025-02-06 14:31:11,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:11,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:11,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:11,594 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 14:31:11,596 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 14:31:11,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 14:31:11,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 14:31:11,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:11,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:11,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 14:31:11,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:31:11,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 14:31:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642785089] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:11,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:11,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2025-02-06 14:31:11,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410988497] [2025-02-06 14:31:11,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:11,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:31:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:11,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:31:11,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:31:11,868 INFO L87 Difference]: Start difference. First operand 94 states and 135 transitions. Second operand has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:12,409 INFO L93 Difference]: Finished difference Result 336 states and 540 transitions. [2025-02-06 14:31:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 14:31:12,409 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2025-02-06 14:31:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:12,411 INFO L225 Difference]: With dead ends: 336 [2025-02-06 14:31:12,411 INFO L226 Difference]: Without dead ends: 251 [2025-02-06 14:31:12,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 14:31:12,413 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 226 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:12,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 457 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:31:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-02-06 14:31:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 225. [2025-02-06 14:31:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 177 states have (on average 1.0960451977401129) internal successors, (194), 176 states have internal predecessors, (194), 28 states have call successors, (28), 8 states have call predecessors, (28), 18 states have return successors, (94), 40 states have call predecessors, (94), 27 states have call successors, (94) [2025-02-06 14:31:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2025-02-06 14:31:12,435 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 37 [2025-02-06 14:31:12,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:12,435 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2025-02-06 14:31:12,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:31:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2025-02-06 14:31:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-06 14:31:12,436 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:12,436 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:12,442 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 14:31:12,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:12,637 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:12,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1080149815, now seen corresponding path program 1 times [2025-02-06 14:31:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413845499] [2025-02-06 14:31:12,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:12,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-06 14:31:12,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 14:31:12,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:12,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2025-02-06 14:31:12,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413845499] [2025-02-06 14:31:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413845499] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:12,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:31:12,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:31:12,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617757344] [2025-02-06 14:31:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:12,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:31:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:12,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:31:12,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:31:12,755 INFO L87 Difference]: Start difference. First operand 225 states and 316 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 14:31:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:12,803 INFO L93 Difference]: Finished difference Result 252 states and 360 transitions. [2025-02-06 14:31:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:31:12,804 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 56 [2025-02-06 14:31:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:12,805 INFO L225 Difference]: With dead ends: 252 [2025-02-06 14:31:12,806 INFO L226 Difference]: Without dead ends: 251 [2025-02-06 14:31:12,806 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 14:31:12,806 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:12,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 75 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-02-06 14:31:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 236. [2025-02-06 14:31:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 186 states have (on average 1.0913978494623655) internal successors, (203), 184 states have internal predecessors, (203), 30 states have call successors, (30), 8 states have call predecessors, (30), 18 states have return successors, (106), 43 states have call predecessors, (106), 29 states have call successors, (106) [2025-02-06 14:31:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 339 transitions. [2025-02-06 14:31:12,832 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 339 transitions. Word has length 56 [2025-02-06 14:31:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:12,832 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 339 transitions. [2025-02-06 14:31:12,832 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 14:31:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 339 transitions. [2025-02-06 14:31:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-06 14:31:12,833 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:12,834 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:12,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 14:31:12,834 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:12,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1582837461, now seen corresponding path program 1 times [2025-02-06 14:31:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854341772] [2025-02-06 14:31:12,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:12,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 14:31:12,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 14:31:12,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:12,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2025-02-06 14:31:12,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:12,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854341772] [2025-02-06 14:31:12,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854341772] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:12,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168812705] [2025-02-06 14:31:12,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:12,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:12,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:12,902 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 14:31:12,903 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 14:31:12,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 14:31:12,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 14:31:12,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:12,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:12,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:31:12,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 80 proven. 108 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 14:31:13,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 189 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168812705] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:13,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:13,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 26 [2025-02-06 14:31:13,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741556431] [2025-02-06 14:31:13,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:13,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 14:31:13,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:13,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 14:31:13,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2025-02-06 14:31:13,379 INFO L87 Difference]: Start difference. First operand 236 states and 339 transitions. Second operand has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:31:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:13,854 INFO L93 Difference]: Finished difference Result 597 states and 926 transitions. [2025-02-06 14:31:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 14:31:13,855 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 74 [2025-02-06 14:31:13,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:13,857 INFO L225 Difference]: With dead ends: 597 [2025-02-06 14:31:13,857 INFO L226 Difference]: Without dead ends: 382 [2025-02-06 14:31:13,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 125 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2025-02-06 14:31:13,859 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 325 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:13,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 473 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:31:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2025-02-06 14:31:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 350. [2025-02-06 14:31:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 276 states have (on average 1.0978260869565217) internal successors, (303), 275 states have internal predecessors, (303), 44 states have call successors, (44), 13 states have call predecessors, (44), 28 states have return successors, (131), 61 states have call predecessors, (131), 43 states have call successors, (131) [2025-02-06 14:31:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 478 transitions. [2025-02-06 14:31:13,883 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 478 transitions. Word has length 74 [2025-02-06 14:31:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:13,883 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 478 transitions. [2025-02-06 14:31:13,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-06 14:31:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 478 transitions. [2025-02-06 14:31:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-06 14:31:13,884 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:13,884 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 11, 11, 11, 11, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:13,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 14:31:14,085 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,SelfDestructingSolverStorable7 [2025-02-06 14:31:14,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:14,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1714387328, now seen corresponding path program 2 times [2025-02-06 14:31:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679199453] [2025-02-06 14:31:14,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:14,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 106 statements into 2 equivalence classes. [2025-02-06 14:31:14,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 14:31:14,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:14,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-06 14:31:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679199453] [2025-02-06 14:31:14,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679199453] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:14,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553357204] [2025-02-06 14:31:14,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:14,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:14,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:14,169 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 14:31:14,171 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 14:31:14,192 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 106 statements into 2 equivalence classes. [2025-02-06 14:31:14,210 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 14:31:14,210 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:14,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:14,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 14:31:14,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 198 proven. 234 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-06 14:31:14,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 58 proven. 394 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 14:31:14,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553357204] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:14,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 27 [2025-02-06 14:31:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196647196] [2025-02-06 14:31:14,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:14,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 14:31:14,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:14,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 14:31:14,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2025-02-06 14:31:14,708 INFO L87 Difference]: Start difference. First operand 350 states and 478 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:15,179 INFO L93 Difference]: Finished difference Result 743 states and 1075 transitions. [2025-02-06 14:31:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 14:31:15,180 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 106 [2025-02-06 14:31:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:15,183 INFO L225 Difference]: With dead ends: 743 [2025-02-06 14:31:15,183 INFO L226 Difference]: Without dead ends: 414 [2025-02-06 14:31:15,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 178 SyntacticMatches, 20 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2025-02-06 14:31:15,186 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 371 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:15,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 547 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:31:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-06 14:31:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 380. [2025-02-06 14:31:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 300 states have (on average 1.0966666666666667) internal successors, (329), 298 states have internal predecessors, (329), 48 states have call successors, (48), 14 states have call predecessors, (48), 30 states have return successors, (142), 67 states have call predecessors, (142), 47 states have call successors, (142) [2025-02-06 14:31:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 519 transitions. [2025-02-06 14:31:15,232 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 519 transitions. Word has length 106 [2025-02-06 14:31:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:15,232 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 519 transitions. [2025-02-06 14:31:15,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 519 transitions. [2025-02-06 14:31:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 14:31:15,234 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:15,234 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:15,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 14:31:15,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:15,435 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:15,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash 334736119, now seen corresponding path program 1 times [2025-02-06 14:31:15,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:15,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721100731] [2025-02-06 14:31:15,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:15,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:31:15,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:31:15,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:15,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:15,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:15,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721100731] [2025-02-06 14:31:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721100731] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:15,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432288339] [2025-02-06 14:31:15,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:31:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:15,951 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 14:31:15,953 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 14:31:15,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 14:31:16,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 14:31:16,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:31:16,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:16,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 14:31:16,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:16,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-06 14:31:16,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432288339] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:16,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:16,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2025-02-06 14:31:16,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048656422] [2025-02-06 14:31:16,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:16,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 14:31:16,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:16,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 14:31:16,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:31:16,503 INFO L87 Difference]: Start difference. First operand 380 states and 519 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:31:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:17,142 INFO L93 Difference]: Finished difference Result 725 states and 1047 transitions. [2025-02-06 14:31:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 14:31:17,142 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2025-02-06 14:31:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:17,145 INFO L225 Difference]: With dead ends: 725 [2025-02-06 14:31:17,145 INFO L226 Difference]: Without dead ends: 366 [2025-02-06 14:31:17,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 174 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=511, Invalid=1295, Unknown=0, NotChecked=0, Total=1806 [2025-02-06 14:31:17,148 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 561 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:17,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 175 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:31:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2025-02-06 14:31:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 340. [2025-02-06 14:31:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 267 states have (on average 1.0936329588014981) internal successors, (292), 269 states have internal predecessors, (292), 43 states have call successors, (43), 14 states have call predecessors, (43), 28 states have return successors, (84), 56 states have call predecessors, (84), 42 states have call successors, (84) [2025-02-06 14:31:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 419 transitions. [2025-02-06 14:31:17,168 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 419 transitions. Word has length 93 [2025-02-06 14:31:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:17,169 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 419 transitions. [2025-02-06 14:31:17,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 14:31:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 419 transitions. [2025-02-06 14:31:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-02-06 14:31:17,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:17,170 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 14:31:17,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:17,372 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,SelfDestructingSolverStorable9 [2025-02-06 14:31:17,372 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:17,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1074906584, now seen corresponding path program 2 times [2025-02-06 14:31:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505397554] [2025-02-06 14:31:17,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:17,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:17,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-06 14:31:17,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-06 14:31:17,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:17,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-02-06 14:31:17,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505397554] [2025-02-06 14:31:17,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505397554] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895423573] [2025-02-06 14:31:17,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 14:31:17,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:17,517 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 14:31:17,519 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 14:31:17,540 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-06 14:31:17,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-06 14:31:17,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 14:31:17,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:17,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 14:31:17,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2025-02-06 14:31:17,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2025-02-06 14:31:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895423573] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:17,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:17,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-02-06 14:31:17,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604318717] [2025-02-06 14:31:17,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:17,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 14:31:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:17,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 14:31:17,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:31:17,720 INFO L87 Difference]: Start difference. First operand 340 states and 419 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:17,798 INFO L93 Difference]: Finished difference Result 350 states and 431 transitions. [2025-02-06 14:31:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:31:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 87 [2025-02-06 14:31:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:17,800 INFO L225 Difference]: With dead ends: 350 [2025-02-06 14:31:17,800 INFO L226 Difference]: Without dead ends: 348 [2025-02-06 14:31:17,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:31:17,801 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:17,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 159 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-02-06 14:31:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2025-02-06 14:31:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 267 states have (on average 1.0823970037453183) internal successors, (289), 269 states have internal predecessors, (289), 43 states have call successors, (43), 14 states have call predecessors, (43), 28 states have return successors, (84), 56 states have call predecessors, (84), 42 states have call successors, (84) [2025-02-06 14:31:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 416 transitions. [2025-02-06 14:31:17,815 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 416 transitions. Word has length 87 [2025-02-06 14:31:17,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:17,815 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 416 transitions. [2025-02-06 14:31:17,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-06 14:31:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 416 transitions. [2025-02-06 14:31:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-06 14:31:17,816 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:17,816 INFO L218 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 14:31:17,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:18,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:18,017 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:18,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:18,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1950989099, now seen corresponding path program 3 times [2025-02-06 14:31:18,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862438209] [2025-02-06 14:31:18,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:18,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 12 equivalence classes. [2025-02-06 14:31:18,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 104 statements. [2025-02-06 14:31:18,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 14:31:18,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-02-06 14:31:18,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862438209] [2025-02-06 14:31:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862438209] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881387677] [2025-02-06 14:31:18,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:18,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:18,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:18,062 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 14:31:18,063 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 14:31:18,101 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 12 equivalence classes. [2025-02-06 14:31:18,111 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 104 statements. [2025-02-06 14:31:18,112 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 14:31:18,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:18,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 14:31:18,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2025-02-06 14:31:18,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:31:18,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881387677] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:31:18,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:31:18,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2025-02-06 14:31:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506452240] [2025-02-06 14:31:18,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:31:18,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:31:18,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:18,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:31:18,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:31:18,137 INFO L87 Difference]: Start difference. First operand 340 states and 416 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:31:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:18,180 INFO L93 Difference]: Finished difference Result 536 states and 688 transitions. [2025-02-06 14:31:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:31:18,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 104 [2025-02-06 14:31:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:18,182 INFO L225 Difference]: With dead ends: 536 [2025-02-06 14:31:18,182 INFO L226 Difference]: Without dead ends: 217 [2025-02-06 14:31:18,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:31:18,184 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:18,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-06 14:31:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2025-02-06 14:31:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.1235294117647059) internal successors, (191), 172 states have internal predecessors, (191), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 248 transitions. [2025-02-06 14:31:18,212 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 248 transitions. Word has length 104 [2025-02-06 14:31:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:18,212 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 248 transitions. [2025-02-06 14:31:18,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 14:31:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 248 transitions. [2025-02-06 14:31:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-06 14:31:18,213 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:18,213 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 10, 10, 10, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-02-06 14:31:18,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:18,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:18,415 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:18,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1753914713, now seen corresponding path program 4 times [2025-02-06 14:31:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:18,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665398459] [2025-02-06 14:31:18,415 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:18,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:18,420 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 119 statements into 2 equivalence classes. [2025-02-06 14:31:18,436 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-02-06 14:31:18,437 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:18,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-02-06 14:31:18,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665398459] [2025-02-06 14:31:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665398459] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:18,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13203558] [2025-02-06 14:31:18,662 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:18,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:18,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:18,667 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 14:31:18,668 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 14:31:18,692 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 119 statements into 2 equivalence classes. [2025-02-06 14:31:18,711 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-02-06 14:31:18,711 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:18,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:18,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 14:31:18,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2025-02-06 14:31:18,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2025-02-06 14:31:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13203558] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:19,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 22 [2025-02-06 14:31:19,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985456209] [2025-02-06 14:31:19,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:19,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 14:31:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:19,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 14:31:19,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2025-02-06 14:31:19,180 INFO L87 Difference]: Start difference. First operand 215 states and 248 transitions. Second operand has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-06 14:31:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:19,217 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2025-02-06 14:31:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:31:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) Word has length 119 [2025-02-06 14:31:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:19,218 INFO L225 Difference]: With dead ends: 215 [2025-02-06 14:31:19,218 INFO L226 Difference]: Without dead ends: 214 [2025-02-06 14:31:19,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 227 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2025-02-06 14:31:19,220 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:19,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-06 14:31:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-06 14:31:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0588235294117647) internal successors, (180), 171 states have internal predecessors, (180), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 237 transitions. [2025-02-06 14:31:19,231 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 237 transitions. Word has length 119 [2025-02-06 14:31:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:19,231 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 237 transitions. [2025-02-06 14:31:19,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-06 14:31:19,231 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 237 transitions. [2025-02-06 14:31:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-06 14:31:19,233 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:19,233 INFO L218 NwaCegarLoop]: trace histogram [20, 17, 14, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2025-02-06 14:31:19,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:19,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:19,435 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:19,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash 309160204, now seen corresponding path program 3 times [2025-02-06 14:31:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:19,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193701866] [2025-02-06 14:31:19,435 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:19,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:19,441 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 173 statements into 17 equivalence classes. [2025-02-06 14:31:19,456 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 173 statements. [2025-02-06 14:31:19,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 14:31:19,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-02-06 14:31:19,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:19,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193701866] [2025-02-06 14:31:19,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193701866] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:19,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038463581] [2025-02-06 14:31:19,830 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 14:31:19,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:19,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:19,835 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 14:31:19,836 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 14:31:19,864 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 173 statements into 17 equivalence classes. [2025-02-06 14:31:19,888 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 173 statements. [2025-02-06 14:31:19,888 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 14:31:19,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:19,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 14:31:19,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2025-02-06 14:31:20,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2025-02-06 14:31:20,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038463581] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:20,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:20,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2025-02-06 14:31:20,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594790686] [2025-02-06 14:31:20,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:20,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-06 14:31:20,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:20,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-06 14:31:20,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2025-02-06 14:31:20,946 INFO L87 Difference]: Start difference. First operand 214 states and 237 transitions. Second operand has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-02-06 14:31:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:21,018 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2025-02-06 14:31:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:31:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) Word has length 173 [2025-02-06 14:31:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:21,019 INFO L225 Difference]: With dead ends: 215 [2025-02-06 14:31:21,019 INFO L226 Difference]: Without dead ends: 214 [2025-02-06 14:31:21,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 330 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 14:31:21,020 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:21,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 118 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:31:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-06 14:31:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-06 14:31:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.035294117647059) internal successors, (176), 171 states have internal predecessors, (176), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 233 transitions. [2025-02-06 14:31:21,027 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 233 transitions. Word has length 173 [2025-02-06 14:31:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:21,027 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 233 transitions. [2025-02-06 14:31:21,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-02-06 14:31:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 233 transitions. [2025-02-06 14:31:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2025-02-06 14:31:21,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:21,030 INFO L218 NwaCegarLoop]: trace histogram [44, 40, 36, 23, 23, 23, 23, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2025-02-06 14:31:21,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:21,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 14:31:21,237 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:21,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -279767691, now seen corresponding path program 4 times [2025-02-06 14:31:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637246064] [2025-02-06 14:31:21,237 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:21,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:21,246 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 416 statements into 2 equivalence classes. [2025-02-06 14:31:21,271 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 416 of 416 statements. [2025-02-06 14:31:21,275 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:21,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-02-06 14:31:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637246064] [2025-02-06 14:31:23,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637246064] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408864010] [2025-02-06 14:31:23,133 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 14:31:23,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:23,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:23,135 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 14:31:23,137 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 14:31:23,183 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 416 statements into 2 equivalence classes. [2025-02-06 14:31:23,243 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 416 of 416 statements. [2025-02-06 14:31:23,243 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 14:31:23,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:23,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-06 14:31:23,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-02-06 14:31:23,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:31:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-02-06 14:31:29,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408864010] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:31:29,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:31:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2025-02-06 14:31:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878564275] [2025-02-06 14:31:29,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:31:29,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 14:31:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:31:29,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 14:31:29,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 14:31:29,345 INFO L87 Difference]: Start difference. First operand 214 states and 233 transitions. Second operand has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-06 14:31:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:31:29,487 INFO L93 Difference]: Finished difference Result 215 states and 233 transitions. [2025-02-06 14:31:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 14:31:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 416 [2025-02-06 14:31:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:31:29,492 INFO L225 Difference]: With dead ends: 215 [2025-02-06 14:31:29,492 INFO L226 Difference]: Without dead ends: 214 [2025-02-06 14:31:29,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 810 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 14:31:29,493 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:31:29,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 196 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:31:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-06 14:31:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-06 14:31:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0176470588235293) internal successors, (173), 171 states have internal predecessors, (173), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-06 14:31:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 230 transitions. [2025-02-06 14:31:29,508 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 230 transitions. Word has length 416 [2025-02-06 14:31:29,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:31:29,509 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 230 transitions. [2025-02-06 14:31:29,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-02-06 14:31:29,510 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 230 transitions. [2025-02-06 14:31:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2025-02-06 14:31:29,534 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:31:29,534 INFO L218 NwaCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2025-02-06 14:31:29,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 14:31:29,738 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,SelfDestructingSolverStorable14 [2025-02-06 14:31:29,738 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-02-06 14:31:29,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:31:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash -417071150, now seen corresponding path program 5 times [2025-02-06 14:31:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:31:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039388542] [2025-02-06 14:31:29,739 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:31:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:31:29,768 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1071 statements into 76 equivalence classes. [2025-02-06 14:31:29,863 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-02-06 14:31:29,863 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-02-06 14:31:29,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7588 proven. 10182 refuted. 0 times theorem prover too weak. 24164 trivial. 0 not checked. [2025-02-06 14:31:44,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:31:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039388542] [2025-02-06 14:31:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039388542] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:31:44,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884591821] [2025-02-06 14:31:44,622 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 14:31:44,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:31:44,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:31:44,624 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 14:31:44,628 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 14:31:44,759 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1071 statements into 76 equivalence classes. [2025-02-06 14:31:45,067 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-02-06 14:31:45,067 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-02-06 14:31:45,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:31:45,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 217 conjuncts are in the unsatisfiable core [2025-02-06 14:31:45,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:31:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2025-02-06 14:31:45,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:32:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2025-02-06 14:32:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884591821] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:32:21,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:32:21,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 41] total 61 [2025-02-06 14:32:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282150006] [2025-02-06 14:32:21,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:32:21,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-02-06 14:32:21,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:32:21,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-02-06 14:32:21,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=853, Invalid=2929, Unknown=0, NotChecked=0, Total=3782 [2025-02-06 14:32:21,597 INFO L87 Difference]: Start difference. First operand 214 states and 230 transitions. Second operand has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2025-02-06 14:32:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:32:21,706 INFO L93 Difference]: Finished difference Result 214 states and 230 transitions. [2025-02-06 14:32:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 14:32:21,706 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) Word has length 1071 [2025-02-06 14:32:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:32:21,710 INFO L225 Difference]: With dead ends: 214 [2025-02-06 14:32:21,710 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 14:32:21,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2359 GetRequests, 2105 SyntacticMatches, 192 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7608 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=916, Invalid=3116, Unknown=0, NotChecked=0, Total=4032 [2025-02-06 14:32:21,712 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:32:21,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 207 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:32:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 14:32:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 14:32:21,712 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 14:32:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 14:32:21,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1071 [2025-02-06 14:32:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:32:21,713 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 14:32:21,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2025-02-06 14:32:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 14:32:21,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 14:32:21,715 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2025-02-06 14:32:21,715 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2025-02-06 14:32:21,715 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2025-02-06 14:32:21,717 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2025-02-06 14:32:21,717 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2025-02-06 14:32:21,717 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2025-02-06 14:32:21,725 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 14:32:21,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:32:21,924 INFO L422 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1] [2025-02-06 14:32:21,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-06 14:32:22,879 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 14:32:22,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 02:32:22 BoogieIcfgContainer [2025-02-06 14:32:22,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 14:32:22,883 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 14:32:22,883 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 14:32:22,883 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 14:32:22,884 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:31:09" (3/4) ... [2025-02-06 14:32:22,885 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 14:32:22,889 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo [2025-02-06 14:32:22,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-06 14:32:22,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-06 14:32:22,892 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 14:32:22,892 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 14:32:22,940 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 14:32:22,940 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 14:32:22,940 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 14:32:22,941 INFO L158 Benchmark]: Toolchain (without parser) took 73820.79ms. Allocated memory was 167.8MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 131.3MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 284.6MB. Max. memory is 16.1GB. [2025-02-06 14:32:22,941 INFO L158 Benchmark]: CDTParser took 1.05ms. Allocated memory is still 226.5MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 14:32:22,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.80ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 121.1MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 14:32:22,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.39ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 14:32:22,942 INFO L158 Benchmark]: Boogie Preprocessor took 14.75ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 118.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 14:32:22,942 INFO L158 Benchmark]: IcfgBuilder took 198.91ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 108.2MB in the end (delta: 10.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 14:32:22,943 INFO L158 Benchmark]: TraceAbstraction took 73389.17ms. Allocated memory was 167.8MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 107.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 259.4MB. Max. memory is 16.1GB. [2025-02-06 14:32:22,943 INFO L158 Benchmark]: Witness Printer took 57.00ms. Allocated memory is still 2.3GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 14:32:22,945 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05ms. Allocated memory is still 226.5MB. Free memory is still 145.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.80ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 121.1MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.39ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.75ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 118.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 198.91ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 108.2MB in the end (delta: 10.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 73389.17ms. Allocated memory was 167.8MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 107.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 259.4MB. Max. memory is 16.1GB. * Witness Printer took 57.00ms. Allocated memory is still 2.3GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 72.4s, OverallIterations: 16, TraceHistogramMax: 110, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1686 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1652 mSDsluCounter, 2996 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2500 mSDsCounter, 392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3965 IncrementalHoareTripleChecker+Invalid, 4357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 392 mSolverCounterUnsat, 496 mSDtfsCounter, 3965 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5061 GetRequests, 4369 SyntacticMatches, 327 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11745 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=9, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 172 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 64.7s InterpolantComputationTime, 4786 NumberOfCodeBlocks, 4574 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 6948 ConstructedInterpolants, 0 QuantifiedInterpolants, 16288 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4346 ConjunctsInSsa, 437 ConjunctsInUnsatCore, 38 InterpolantComputations, 6 PerfectInterpolantSequences, 123709/154389 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 14:32:22,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE