./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 15:44:50,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 15:44:50,519 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 15:44:50,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 15:44:50,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 15:44:50,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 15:44:50,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 15:44:50,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 15:44:50,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 15:44:50,551 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 15:44:50,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 15:44:50,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 15:44:50,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 15:44:50,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 15:44:50,552 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 15:44:50,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 15:44:50,553 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 15:44:50,554 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 15:44:50,554 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 15:44:50,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 15:44:50,554 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 15:44:50,554 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 15:44:50,554 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 15:44:50,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 15:44:50,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:44:50,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 15:44:50,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 15:44:50,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 15:44:50,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2025-03-17 15:44:50,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 15:44:50,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 15:44:50,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 15:44:50,787 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 15:44:50,788 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 15:44:50,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2025-03-17 15:44:51,926 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d382e8d4/1b84ec002c95449f8cbcc836f5a20633/FLAG04d412dc9 [2025-03-17 15:44:52,138 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 15:44:52,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2025-03-17 15:44:52,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d382e8d4/1b84ec002c95449f8cbcc836f5a20633/FLAG04d412dc9 [2025-03-17 15:44:52,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d382e8d4/1b84ec002c95449f8cbcc836f5a20633 [2025-03-17 15:44:52,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 15:44:52,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 15:44:52,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 15:44:52,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 15:44:52,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 15:44:52,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb302a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52, skipping insertion in model container [2025-03-17 15:44:52,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 15:44:52,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:44:52,347 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 15:44:52,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:44:52,369 INFO L204 MainTranslator]: Completed translation [2025-03-17 15:44:52,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52 WrapperNode [2025-03-17 15:44:52,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 15:44:52,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 15:44:52,372 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 15:44:52,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 15:44:52,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,391 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-03-17 15:44:52,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 15:44:52,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 15:44:52,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 15:44:52,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 15:44:52,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,411 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 15:44:52,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,416 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 15:44:52,420 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 15:44:52,421 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 15:44:52,421 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 15:44:52,422 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (1/1) ... [2025-03-17 15:44:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:44:52,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:44:52,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 15:44:52,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 15:44:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 15:44:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 15:44:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 15:44:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 15:44:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-03-17 15:44:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-03-17 15:44:52,514 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 15:44:52,515 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 15:44:52,618 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: havoc #t~ret4;havoc #t~ret5; [2025-03-17 15:44:52,631 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-03-17 15:44:52,631 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 15:44:52,639 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 15:44:52,639 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 15:44:52,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:44:52 BoogieIcfgContainer [2025-03-17 15:44:52,640 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 15:44:52,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 15:44:52,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 15:44:52,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 15:44:52,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:44:52" (1/3) ... [2025-03-17 15:44:52,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb5d5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:44:52, skipping insertion in model container [2025-03-17 15:44:52,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:52" (2/3) ... [2025-03-17 15:44:52,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb5d5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:44:52, skipping insertion in model container [2025-03-17 15:44:52,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:44:52" (3/3) ... [2025-03-17 15:44:52,648 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2025-03-17 15:44:52,662 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 15:44:52,663 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_10-2.c that has 2 procedures, 28 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-03-17 15:44:52,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 15:44:52,719 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;@5217e599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 15:44:52,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-17 15:44:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 23 states have internal predecessors, (26), 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) [2025-03-17 15:44:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 15:44:52,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:52,729 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 15:44:52,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:52,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1059215992, now seen corresponding path program 1 times [2025-03-17 15:44:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:52,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721897998] [2025-03-17 15:44:52,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:52,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:52,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 15:44:52,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 15:44:52,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:52,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:44:52,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:52,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721897998] [2025-03-17 15:44:52,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721897998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:44:52,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:44:52,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 15:44:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050805648] [2025-03-17 15:44:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:44:52,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 15:44:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:52,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 15:44:52,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 15:44:52,898 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 23 states have internal predecessors, (26), 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 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:44:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:52,938 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2025-03-17 15:44:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 15:44:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 15:44:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:52,945 INFO L225 Difference]: With dead ends: 33 [2025-03-17 15:44:52,945 INFO L226 Difference]: Without dead ends: 23 [2025-03-17 15:44:52,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 15:44:52,949 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:52,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 36 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:44:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-17 15:44:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2025-03-17 15:44:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 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) [2025-03-17 15:44:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2025-03-17 15:44:52,980 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 6 [2025-03-17 15:44:52,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:52,980 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2025-03-17 15:44:52,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:44:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2025-03-17 15:44:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 15:44:52,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:52,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:44:52,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 15:44:52,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:52,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:52,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1524042624, now seen corresponding path program 1 times [2025-03-17 15:44:52,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:52,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790296483] [2025-03-17 15:44:52,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:52,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:52,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 15:44:52,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 15:44:52,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:52,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:44:53,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:53,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790296483] [2025-03-17 15:44:53,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790296483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:44:53,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:44:53,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 15:44:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386140462] [2025-03-17 15:44:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:44:53,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 15:44:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:53,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 15:44:53,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:44:53,053 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:44:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:53,129 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2025-03-17 15:44:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 15:44:53,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 15:44:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:53,130 INFO L225 Difference]: With dead ends: 23 [2025-03-17 15:44:53,130 INFO L226 Difference]: Without dead ends: 21 [2025-03-17 15:44:53,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 15:44:53,132 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:53,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 25 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:44:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-17 15:44:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2025-03-17 15:44:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 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) [2025-03-17 15:44:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2025-03-17 15:44:53,136 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2025-03-17 15:44:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:53,136 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2025-03-17 15:44:53,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:44:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2025-03-17 15:44:53,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-17 15:44:53,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:53,137 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:44:53,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 15:44:53,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:53,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2052325840, now seen corresponding path program 1 times [2025-03-17 15:44:53,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:53,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315084445] [2025-03-17 15:44:53,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:53,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:53,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 15:44:53,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 15:44:53,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:53,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 15:44:53,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315084445] [2025-03-17 15:44:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315084445] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:44:53,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:44:53,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 15:44:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705181848] [2025-03-17 15:44:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:44:53,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 15:44:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:53,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 15:44:53,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:44:53,265 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:44:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:53,298 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2025-03-17 15:44:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 15:44:53,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2025-03-17 15:44:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:53,299 INFO L225 Difference]: With dead ends: 33 [2025-03-17 15:44:53,299 INFO L226 Difference]: Without dead ends: 31 [2025-03-17 15:44:53,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:44:53,300 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:53,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:44:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-03-17 15:44:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2025-03-17 15:44:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 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) [2025-03-17 15:44:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2025-03-17 15:44:53,310 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2025-03-17 15:44:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:53,310 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2025-03-17 15:44:53,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:44:53,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2025-03-17 15:44:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-17 15:44:53,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:53,312 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:44:53,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 15:44:53,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:53,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -407005887, now seen corresponding path program 1 times [2025-03-17 15:44:53,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:53,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36727880] [2025-03-17 15:44:53,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:53,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:53,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 15:44:53,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 15:44:53,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:53,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-17 15:44:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36727880] [2025-03-17 15:44:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36727880] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:44:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761347050] [2025-03-17 15:44:53,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:53,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:44:53,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:44:53,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 15:44:53,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 15:44:53,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 15:44:53,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:53,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:53,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 15:44:53,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:44:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:44:53,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:44:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 15:44:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761347050] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:44:53,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:44:53,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-17 15:44:53,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144983924] [2025-03-17 15:44:53,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:44:53,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 15:44:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:53,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 15:44:53,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-03-17 15:44:53,735 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 19 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-17 15:44:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:54,226 INFO L93 Difference]: Finished difference Result 177 states and 257 transitions. [2025-03-17 15:44:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 15:44:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2025-03-17 15:44:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:54,227 INFO L225 Difference]: With dead ends: 177 [2025-03-17 15:44:54,227 INFO L226 Difference]: Without dead ends: 144 [2025-03-17 15:44:54,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2025-03-17 15:44:54,229 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 159 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:54,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 289 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 15:44:54,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-03-17 15:44:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 128. [2025-03-17 15:44:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 101 states have internal predecessors, (110), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 21 states have call predecessors, (46), 16 states have call successors, (46) [2025-03-17 15:44:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 173 transitions. [2025-03-17 15:44:54,247 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 173 transitions. Word has length 29 [2025-03-17 15:44:54,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:54,247 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 173 transitions. [2025-03-17 15:44:54,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-17 15:44:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 173 transitions. [2025-03-17 15:44:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-17 15:44:54,248 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:54,248 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:44:54,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 15:44:54,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:54,449 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:54,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash -689209331, now seen corresponding path program 2 times [2025-03-17 15:44:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:54,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839118491] [2025-03-17 15:44:54,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:44:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:54,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-03-17 15:44:54,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 15:44:54,462 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:44:54,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-17 15:44:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:54,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839118491] [2025-03-17 15:44:54,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839118491] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:44:54,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483062707] [2025-03-17 15:44:54,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:44:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:54,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:44:54,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:44:54,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 15:44:54,602 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-03-17 15:44:54,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 15:44:54,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:44:54,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:54,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 15:44:54,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:44:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-17 15:44:54,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:44:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483062707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:44:54,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 15:44:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-03-17 15:44:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420183949] [2025-03-17 15:44:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:44:54,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 15:44:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:54,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 15:44:54,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 15:44:54,662 INFO L87 Difference]: Start difference. First operand 128 states and 173 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:44:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:54,692 INFO L93 Difference]: Finished difference Result 151 states and 209 transitions. [2025-03-17 15:44:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 15:44:54,693 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2025-03-17 15:44:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:54,696 INFO L225 Difference]: With dead ends: 151 [2025-03-17 15:44:54,696 INFO L226 Difference]: Without dead ends: 150 [2025-03-17 15:44:54,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 15:44:54,697 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:54,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:44:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-17 15:44:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2025-03-17 15:44:54,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 states have internal predecessors, (117), 17 states have call successors, (17), 5 states have call predecessors, (17), 11 states have return successors, (55), 24 states have call predecessors, (55), 16 states have call successors, (55) [2025-03-17 15:44:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2025-03-17 15:44:54,716 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 41 [2025-03-17 15:44:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:54,716 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2025-03-17 15:44:54,716 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:44:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2025-03-17 15:44:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-17 15:44:54,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:54,717 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] [2025-03-17 15:44:54,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 15:44:54,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:54,918 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:54,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash 109347199, now seen corresponding path program 1 times [2025-03-17 15:44:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:54,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723473473] [2025-03-17 15:44:54,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:54,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:54,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 15:44:54,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 15:44:54,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:54,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-17 15:44:55,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723473473] [2025-03-17 15:44:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723473473] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:44:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305958755] [2025-03-17 15:44:55,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:55,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:55,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:44:55,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:44:55,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 15:44:55,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 15:44:55,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 15:44:55,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:55,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:55,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 15:44:55,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:44:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:44:55,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:44:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 15:44:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305958755] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:44:55,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:44:55,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2025-03-17 15:44:55,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891187832] [2025-03-17 15:44:55,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:44:55,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-17 15:44:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:55,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-17 15:44:55,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2025-03-17 15:44:55,370 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 27 states, 25 states have (on average 3.04) internal successors, (76), 19 states have internal predecessors, (76), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-17 15:44:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:56,263 INFO L93 Difference]: Finished difference Result 451 states and 714 transitions. [2025-03-17 15:44:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-17 15:44:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.04) internal successors, (76), 19 states have internal predecessors, (76), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 42 [2025-03-17 15:44:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:56,266 INFO L225 Difference]: With dead ends: 451 [2025-03-17 15:44:56,266 INFO L226 Difference]: Without dead ends: 329 [2025-03-17 15:44:56,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892 [2025-03-17 15:44:56,270 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 242 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:56,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 611 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 15:44:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2025-03-17 15:44:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 294. [2025-03-17 15:44:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 231 states have (on average 1.0995670995670996) internal successors, (254), 231 states have internal predecessors, (254), 37 states have call successors, (37), 11 states have call predecessors, (37), 24 states have return successors, (109), 51 states have call predecessors, (109), 36 states have call successors, (109) [2025-03-17 15:44:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 400 transitions. [2025-03-17 15:44:56,303 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 400 transitions. Word has length 42 [2025-03-17 15:44:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:56,303 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 400 transitions. [2025-03-17 15:44:56,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.04) internal successors, (76), 19 states have internal predecessors, (76), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-17 15:44:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 400 transitions. [2025-03-17 15:44:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-17 15:44:56,306 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:56,306 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:44:56,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 15:44:56,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:56,507 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:56,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:56,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1086823145, now seen corresponding path program 1 times [2025-03-17 15:44:56,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:56,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713139265] [2025-03-17 15:44:56,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:56,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-17 15:44:56,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-17 15:44:56,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:56,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-03-17 15:44:56,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:56,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713139265] [2025-03-17 15:44:56,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713139265] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:44:56,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:44:56,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 15:44:56,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809394124] [2025-03-17 15:44:56,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:44:56,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 15:44:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:56,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 15:44:56,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:44:56,612 INFO L87 Difference]: Start difference. First operand 294 states and 400 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) [2025-03-17 15:44:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:56,643 INFO L93 Difference]: Finished difference Result 308 states and 422 transitions. [2025-03-17 15:44:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 15:44:56,643 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 79 [2025-03-17 15:44:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:56,645 INFO L225 Difference]: With dead ends: 308 [2025-03-17 15:44:56,645 INFO L226 Difference]: Without dead ends: 307 [2025-03-17 15:44:56,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:44:56,646 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:56,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:44:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2025-03-17 15:44:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2025-03-17 15:44:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 237 states have (on average 1.0970464135021096) internal successors, (260), 236 states have internal predecessors, (260), 38 states have call successors, (38), 11 states have call predecessors, (38), 24 states have return successors, (115), 53 states have call predecessors, (115), 37 states have call successors, (115) [2025-03-17 15:44:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 413 transitions. [2025-03-17 15:44:56,672 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 413 transitions. Word has length 79 [2025-03-17 15:44:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:56,672 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 413 transitions. [2025-03-17 15:44:56,672 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) [2025-03-17 15:44:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 413 transitions. [2025-03-17 15:44:56,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-17 15:44:56,677 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:56,678 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 15:44:56,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 15:44:56,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:56,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1170360820, now seen corresponding path program 1 times [2025-03-17 15:44:56,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:56,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887420304] [2025-03-17 15:44:56,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:56,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:56,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-17 15:44:56,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 15:44:56,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:56,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2025-03-17 15:44:56,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:56,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887420304] [2025-03-17 15:44:56,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887420304] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:44:56,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504574642] [2025-03-17 15:44:56,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:56,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:56,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:44:56,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:44:56,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 15:44:56,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-17 15:44:56,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 15:44:56,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:56,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:56,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 15:44:56,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:44:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 120 proven. 234 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-17 15:44:57,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:44:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 2 proven. 355 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-17 15:44:57,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504574642] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:44:57,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:44:57,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 27 [2025-03-17 15:44:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270915817] [2025-03-17 15:44:57,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:44:57,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-17 15:44:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:57,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-17 15:44:57,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2025-03-17 15:44:57,382 INFO L87 Difference]: Start difference. First operand 301 states and 413 transitions. Second operand has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 18 states have internal predecessors, (86), 13 states have call successors, (17), 11 states have call predecessors, (17), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-17 15:44:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:57,980 INFO L93 Difference]: Finished difference Result 652 states and 942 transitions. [2025-03-17 15:44:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 15:44:57,980 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 18 states have internal predecessors, (86), 13 states have call successors, (17), 11 states have call predecessors, (17), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2025-03-17 15:44:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:57,997 INFO L225 Difference]: With dead ends: 652 [2025-03-17 15:44:57,997 INFO L226 Difference]: Without dead ends: 365 [2025-03-17 15:44:57,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 149 SyntacticMatches, 20 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2025-03-17 15:44:58,000 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 341 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:58,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 533 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 15:44:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2025-03-17 15:44:58,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 331. [2025-03-17 15:44:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 261 states have (on average 1.0957854406130267) internal successors, (286), 259 states have internal predecessors, (286), 42 states have call successors, (42), 12 states have call predecessors, (42), 26 states have return successors, (130), 59 states have call predecessors, (130), 41 states have call successors, (130) [2025-03-17 15:44:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2025-03-17 15:44:58,024 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 91 [2025-03-17 15:44:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:58,024 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2025-03-17 15:44:58,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 18 states have internal predecessors, (86), 13 states have call successors, (17), 11 states have call predecessors, (17), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-17 15:44:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2025-03-17 15:44:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-17 15:44:58,027 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:58,027 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 15:44:58,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 15:44:58,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:58,228 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:58,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1938936612, now seen corresponding path program 2 times [2025-03-17 15:44:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105590127] [2025-03-17 15:44:58,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:44:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:58,232 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-03-17 15:44:58,237 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 15:44:58,237 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:44:58,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2025-03-17 15:44:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105590127] [2025-03-17 15:44:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105590127] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:44:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083751294] [2025-03-17 15:44:58,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:44:58,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:58,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:44:58,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:44:58,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 15:44:58,312 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-03-17 15:44:58,334 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 15:44:58,334 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:44:58,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:58,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 15:44:58,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:44:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2025-03-17 15:44:58,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:44:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2025-03-17 15:44:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083751294] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:44:58,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:44:58,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 15:44:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181595415] [2025-03-17 15:44:58,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:44:58,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 15:44:58,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:58,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 15:44:58,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-17 15:44:58,424 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-17 15:44:58,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:58,482 INFO L93 Difference]: Finished difference Result 352 states and 483 transitions. [2025-03-17 15:44:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 15:44:58,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2025-03-17 15:44:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:58,485 INFO L225 Difference]: With dead ends: 352 [2025-03-17 15:44:58,485 INFO L226 Difference]: Without dead ends: 351 [2025-03-17 15:44:58,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-03-17 15:44:58,486 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:58,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:44:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-03-17 15:44:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 331. [2025-03-17 15:44:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 261 states have (on average 1.0957854406130267) internal successors, (286), 259 states have internal predecessors, (286), 42 states have call successors, (42), 12 states have call predecessors, (42), 26 states have return successors, (130), 59 states have call predecessors, (130), 41 states have call successors, (130) [2025-03-17 15:44:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2025-03-17 15:44:58,510 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 91 [2025-03-17 15:44:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:58,510 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2025-03-17 15:44:58,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-17 15:44:58,510 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2025-03-17 15:44:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-17 15:44:58,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:58,511 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] [2025-03-17 15:44:58,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 15:44:58,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:58,715 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:44:58,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:44:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash 22507152, now seen corresponding path program 1 times [2025-03-17 15:44:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:44:58,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579193209] [2025-03-17 15:44:58,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:44:58,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 15:44:58,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 15:44:58,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:58,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 15:44:59,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:44:59,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579193209] [2025-03-17 15:44:59,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579193209] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:44:59,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201948325] [2025-03-17 15:44:59,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:44:59,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:44:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:44:59,069 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:44:59,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 15:44:59,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 15:44:59,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 15:44:59,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:44:59,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:44:59,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 15:44:59,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:44:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 15:44:59,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:44:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-17 15:44:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201948325] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:44:59,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:44:59,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2025-03-17 15:44:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356273025] [2025-03-17 15:44:59,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:44:59,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 15:44:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:44:59,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 15:44:59,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2025-03-17 15:44:59,488 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 15 states have internal predecessors, (71), 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) [2025-03-17 15:44:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:44:59,926 INFO L93 Difference]: Finished difference Result 634 states and 922 transitions. [2025-03-17 15:44:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-17 15:44:59,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 15 states have internal predecessors, (71), 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 92 [2025-03-17 15:44:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:44:59,928 INFO L225 Difference]: With dead ends: 634 [2025-03-17 15:44:59,928 INFO L226 Difference]: Without dead ends: 317 [2025-03-17 15:44:59,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 172 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=511, Invalid=1295, Unknown=0, NotChecked=0, Total=1806 [2025-03-17 15:44:59,931 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 444 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:44:59,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 166 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 15:44:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-03-17 15:44:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 291. [2025-03-17 15:44:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 228 states have (on average 1.0921052631578947) internal successors, (249), 230 states have internal predecessors, (249), 37 states have call successors, (37), 12 states have call predecessors, (37), 24 states have return successors, (72), 48 states have call predecessors, (72), 36 states have call successors, (72) [2025-03-17 15:44:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 358 transitions. [2025-03-17 15:44:59,943 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 358 transitions. Word has length 92 [2025-03-17 15:44:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:44:59,944 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 358 transitions. [2025-03-17 15:44:59,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 15 states have internal predecessors, (71), 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) [2025-03-17 15:44:59,944 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 358 transitions. [2025-03-17 15:44:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 15:44:59,945 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:44:59,945 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] [2025-03-17 15:44:59,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 15:45:00,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:00,149 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:45:00,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:45:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 56510399, now seen corresponding path program 2 times [2025-03-17 15:45:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:45:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007161943] [2025-03-17 15:45:00,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:45:00,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:45:00,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 15:45:00,159 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 15:45:00,159 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:45:00,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-03-17 15:45:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:45:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007161943] [2025-03-17 15:45:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007161943] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:45:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071470772] [2025-03-17 15:45:00,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:45:00,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:00,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:45:00,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:45:00,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 15:45:00,280 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 15:45:00,294 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 15:45:00,294 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:45:00,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:00,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 15:45:00,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:45:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2025-03-17 15:45:00,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:45:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2025-03-17 15:45:00,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071470772] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:45:00,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:45:00,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-03-17 15:45:00,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997487044] [2025-03-17 15:45:00,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:45:00,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 15:45:00,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:45:00,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 15:45:00,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-03-17 15:45:00,460 INFO L87 Difference]: Start difference. First operand 291 states and 358 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 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) [2025-03-17 15:45:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:45:00,549 INFO L93 Difference]: Finished difference Result 301 states and 370 transitions. [2025-03-17 15:45:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 15:45:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 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 86 [2025-03-17 15:45:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:45:00,551 INFO L225 Difference]: With dead ends: 301 [2025-03-17 15:45:00,551 INFO L226 Difference]: Without dead ends: 299 [2025-03-17 15:45:00,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2025-03-17 15:45:00,551 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:45:00,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 165 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:45:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-03-17 15:45:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 291. [2025-03-17 15:45:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 228 states have (on average 1.0833333333333333) internal successors, (247), 230 states have internal predecessors, (247), 37 states have call successors, (37), 12 states have call predecessors, (37), 24 states have return successors, (72), 48 states have call predecessors, (72), 36 states have call successors, (72) [2025-03-17 15:45:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 356 transitions. [2025-03-17 15:45:00,576 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 356 transitions. Word has length 86 [2025-03-17 15:45:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:45:00,576 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 356 transitions. [2025-03-17 15:45:00,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 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) [2025-03-17 15:45:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 356 transitions. [2025-03-17 15:45:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-17 15:45:00,577 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:45:00,577 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] [2025-03-17 15:45:00,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 15:45:00,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:00,778 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:45:00,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:45:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1342913817, now seen corresponding path program 3 times [2025-03-17 15:45:00,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:45:00,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312155618] [2025-03-17 15:45:00,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:45:00,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:45:00,785 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 103 statements into 12 equivalence classes. [2025-03-17 15:45:00,793 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 33 of 103 statements. [2025-03-17 15:45:00,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 15:45:00,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-03-17 15:45:00,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:45:00,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312155618] [2025-03-17 15:45:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312155618] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:45:00,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023944802] [2025-03-17 15:45:00,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:45:00,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:00,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:45:00,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:45:00,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 15:45:00,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 103 statements into 12 equivalence classes. [2025-03-17 15:45:00,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 33 of 103 statements. [2025-03-17 15:45:00,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 15:45:00,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:00,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 15:45:00,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:45:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2025-03-17 15:45:00,877 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:45:00,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023944802] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:45:00,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 15:45:00,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2025-03-17 15:45:00,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719838124] [2025-03-17 15:45:00,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:45:00,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 15:45:00,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:45:00,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 15:45:00,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 15:45:00,878 INFO L87 Difference]: Start difference. First operand 291 states and 356 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-03-17 15:45:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:45:00,917 INFO L93 Difference]: Finished difference Result 463 states and 594 transitions. [2025-03-17 15:45:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 15:45:00,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 103 [2025-03-17 15:45:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:45:00,918 INFO L225 Difference]: With dead ends: 463 [2025-03-17 15:45:00,919 INFO L226 Difference]: Without dead ends: 186 [2025-03-17 15:45:00,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-17 15:45:00,920 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:45:00,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 28 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:45:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-17 15:45:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2025-03-17 15:45:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 145 states have (on average 1.1241379310344828) internal successors, (163), 147 states have internal predecessors, (163), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 15:45:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 212 transitions. [2025-03-17 15:45:00,933 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 212 transitions. Word has length 103 [2025-03-17 15:45:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:45:00,933 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 212 transitions. [2025-03-17 15:45:00,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-03-17 15:45:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 212 transitions. [2025-03-17 15:45:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-17 15:45:00,934 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:45:00,935 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] [2025-03-17 15:45:00,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 15:45:01,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-17 15:45:01,135 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:45:01,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:45:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1263007170, now seen corresponding path program 4 times [2025-03-17 15:45:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:45:01,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137379081] [2025-03-17 15:45:01,136 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 15:45:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:45:01,140 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 118 statements into 2 equivalence classes. [2025-03-17 15:45:01,148 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-03-17 15:45:01,148 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 15:45:01,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-03-17 15:45:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:45:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137379081] [2025-03-17 15:45:01,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137379081] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:45:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594863758] [2025-03-17 15:45:01,377 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 15:45:01,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:45:01,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:45:01,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 15:45:01,406 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 118 statements into 2 equivalence classes. [2025-03-17 15:45:01,429 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-03-17 15:45:01,430 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 15:45:01,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:01,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 15:45:01,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:45:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2025-03-17 15:45:01,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:45:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2025-03-17 15:45:01,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594863758] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:45:01,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:45:01,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 22 [2025-03-17 15:45:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920621486] [2025-03-17 15:45:01,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:45:01,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 15:45:01,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:45:01,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 15:45:01,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2025-03-17 15:45:01,893 INFO L87 Difference]: Start difference. First operand 184 states and 212 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 states have internal predecessors, (59), 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) [2025-03-17 15:45:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:45:01,943 INFO L93 Difference]: Finished difference Result 184 states and 212 transitions. [2025-03-17 15:45:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 15:45:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 states have internal predecessors, (59), 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 118 [2025-03-17 15:45:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:45:01,944 INFO L225 Difference]: With dead ends: 184 [2025-03-17 15:45:01,945 INFO L226 Difference]: Without dead ends: 183 [2025-03-17 15:45:01,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 225 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2025-03-17 15:45:01,945 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:45:01,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 157 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:45:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-17 15:45:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2025-03-17 15:45:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 145 states have (on average 1.0620689655172413) internal successors, (154), 146 states have internal predecessors, (154), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 15:45:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 203 transitions. [2025-03-17 15:45:01,954 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 203 transitions. Word has length 118 [2025-03-17 15:45:01,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:45:01,954 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 203 transitions. [2025-03-17 15:45:01,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 23 states have internal predecessors, (59), 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) [2025-03-17 15:45:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 203 transitions. [2025-03-17 15:45:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-17 15:45:01,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:45:01,955 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] [2025-03-17 15:45:01,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 15:45:02,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-17 15:45:02,156 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:45:02,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:45:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash -229482365, now seen corresponding path program 3 times [2025-03-17 15:45:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:45:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721289784] [2025-03-17 15:45:02,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:45:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:45:02,162 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 172 statements into 17 equivalence classes. [2025-03-17 15:45:02,173 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 136 of 172 statements. [2025-03-17 15:45:02,174 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 15:45:02,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-03-17 15:45:02,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:45:02,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721289784] [2025-03-17 15:45:02,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721289784] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:45:02,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185004689] [2025-03-17 15:45:02,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:45:02,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:02,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:45:02,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:45:02,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 15:45:02,591 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 172 statements into 17 equivalence classes. [2025-03-17 15:45:02,617 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 136 of 172 statements. [2025-03-17 15:45:02,617 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 15:45:02,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:02,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-17 15:45:02,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:45:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2025-03-17 15:45:02,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:45:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2025-03-17 15:45:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185004689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:45:03,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:45:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2025-03-17 15:45:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075097346] [2025-03-17 15:45:03,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:45:03,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-17 15:45:03,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:45:03,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-17 15:45:03,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2025-03-17 15:45:03,749 INFO L87 Difference]: Start difference. First operand 183 states and 203 transitions. Second operand has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 32 states have internal predecessors, (83), 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) [2025-03-17 15:45:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:45:03,837 INFO L93 Difference]: Finished difference Result 184 states and 203 transitions. [2025-03-17 15:45:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 15:45:03,838 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 32 states have internal predecessors, (83), 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 172 [2025-03-17 15:45:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:45:03,839 INFO L225 Difference]: With dead ends: 184 [2025-03-17 15:45:03,840 INFO L226 Difference]: Without dead ends: 183 [2025-03-17 15:45:03,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 328 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2025-03-17 15:45:03,840 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:45:03,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 156 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:45:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-17 15:45:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2025-03-17 15:45:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 145 states have (on average 1.0413793103448277) internal successors, (151), 146 states have internal predecessors, (151), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 15:45:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 200 transitions. [2025-03-17 15:45:03,849 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 200 transitions. Word has length 172 [2025-03-17 15:45:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:45:03,850 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 200 transitions. [2025-03-17 15:45:03,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 32 states have internal predecessors, (83), 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) [2025-03-17 15:45:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 200 transitions. [2025-03-17 15:45:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2025-03-17 15:45:03,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:45:03,855 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] [2025-03-17 15:45:03,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 15:45:04,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-17 15:45:04,055 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:45:04,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:45:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1434869703, now seen corresponding path program 4 times [2025-03-17 15:45:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:45:04,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652978882] [2025-03-17 15:45:04,056 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 15:45:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:45:04,070 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 415 statements into 2 equivalence classes. [2025-03-17 15:45:04,096 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 415 of 415 statements. [2025-03-17 15:45:04,096 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 15:45:04,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-03-17 15:45:05,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:45:05,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652978882] [2025-03-17 15:45:05,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652978882] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:45:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301352386] [2025-03-17 15:45:05,823 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 15:45:05,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:05,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:45:05,827 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:45:05,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 15:45:05,891 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 415 statements into 2 equivalence classes. [2025-03-17 15:45:05,953 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 415 of 415 statements. [2025-03-17 15:45:05,954 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 15:45:05,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:05,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-03-17 15:45:05,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:45:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-03-17 15:45:06,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:45:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-03-17 15:45:11,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301352386] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:45:11,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:45:11,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2025-03-17 15:45:11,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565924383] [2025-03-17 15:45:11,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:45:11,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-17 15:45:11,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:45:11,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-17 15:45:11,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2025-03-17 15:45:11,409 INFO L87 Difference]: Start difference. First operand 183 states and 200 transitions. Second operand has 41 states, 40 states have (on average 2.6) internal successors, (104), 41 states have internal predecessors, (104), 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) [2025-03-17 15:45:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:45:11,494 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2025-03-17 15:45:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 15:45:11,494 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 41 states have internal predecessors, (104), 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 415 [2025-03-17 15:45:11,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:45:11,496 INFO L225 Difference]: With dead ends: 184 [2025-03-17 15:45:11,496 INFO L226 Difference]: Without dead ends: 183 [2025-03-17 15:45:11,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 808 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 15:45:11,497 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:45:11,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 155 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:45:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-17 15:45:11,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2025-03-17 15:45:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 146 states have internal predecessors, (148), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 15:45:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2025-03-17 15:45:11,505 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 415 [2025-03-17 15:45:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:45:11,506 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2025-03-17 15:45:11,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 41 states have internal predecessors, (104), 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) [2025-03-17 15:45:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2025-03-17 15:45:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2025-03-17 15:45:11,522 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:45:11,522 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] [2025-03-17 15:45:11,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 15:45:11,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 15:45:11,723 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:45:11,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:45:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1146735849, now seen corresponding path program 5 times [2025-03-17 15:45:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:45:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536335053] [2025-03-17 15:45:11,723 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 15:45:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:45:11,743 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1070 statements into 76 equivalence classes. [2025-03-17 15:45:11,865 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1070 of 1070 statements. [2025-03-17 15:45:11,865 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-03-17 15:45:11,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7526 proven. 10232 refuted. 0 times theorem prover too weak. 24176 trivial. 0 not checked. [2025-03-17 15:45:25,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:45:25,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536335053] [2025-03-17 15:45:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536335053] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:45:25,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069595627] [2025-03-17 15:45:25,583 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 15:45:25,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:45:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:45:25,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:45:25,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 15:45:25,714 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1070 statements into 76 equivalence classes. [2025-03-17 15:45:25,953 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1070 of 1070 statements. [2025-03-17 15:45:25,954 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-03-17 15:45:25,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:45:25,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 217 conjuncts are in the unsatisfiable core [2025-03-17 15:45:25,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:45:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2025-03-17 15:45:26,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:45:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2025-03-17 15:45:59,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069595627] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:45:59,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 15:45:59,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 41] total 61 [2025-03-17 15:45:59,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544562315] [2025-03-17 15:45:59,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 15:45:59,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-03-17 15:45:59,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:45:59,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-03-17 15:45:59,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=853, Invalid=2929, Unknown=0, NotChecked=0, Total=3782 [2025-03-17 15:45:59,238 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 62 states have internal predecessors, (157), 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) [2025-03-17 15:45:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:45:59,350 INFO L93 Difference]: Finished difference Result 183 states and 197 transitions. [2025-03-17 15:45:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-17 15:45:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 62 states have internal predecessors, (157), 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 1070 [2025-03-17 15:45:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:45:59,352 INFO L225 Difference]: With dead ends: 183 [2025-03-17 15:45:59,352 INFO L226 Difference]: Without dead ends: 0 [2025-03-17 15:45:59,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2357 GetRequests, 2103 SyntacticMatches, 192 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7608 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=916, Invalid=3116, Unknown=0, NotChecked=0, Total=4032 [2025-03-17 15:45:59,354 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:45:59,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 242 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:45:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-17 15:45:59,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-17 15:45:59,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:45:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-17 15:45:59,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1070 [2025-03-17 15:45:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:45:59,356 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 15:45:59,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 62 states have internal predecessors, (157), 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) [2025-03-17 15:45:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-17 15:45:59,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-17 15:45:59,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2025-03-17 15:45:59,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2025-03-17 15:45:59,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2025-03-17 15:45:59,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2025-03-17 15:45:59,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2025-03-17 15:45:59,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2025-03-17 15:45:59,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 15:45:59,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 15:45:59,562 INFO L422 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1] [2025-03-17 15:45:59,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-17 15:46:00,346 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 15:46:00,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:46:00 BoogieIcfgContainer [2025-03-17 15:46:00,349 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 15:46:00,350 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 15:46:00,350 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 15:46:00,350 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 15:46:00,350 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:44:52" (3/4) ... [2025-03-17 15:46:00,352 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 15:46:00,356 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo [2025-03-17 15:46:00,358 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-17 15:46:00,358 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-17 15:46:00,358 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 15:46:00,358 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 15:46:00,413 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 15:46:00,414 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 15:46:00,414 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 15:46:00,414 INFO L158 Benchmark]: Toolchain (without parser) took 68203.13ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 107.3MB in the beginning and 1.0GB in the end (delta: -912.4MB). Peak memory consumption was 495.5MB. Max. memory is 16.1GB. [2025-03-17 15:46:00,414 INFO L158 Benchmark]: CDTParser took 1.13ms. Allocated memory is still 201.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 15:46:00,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.86ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 96.9MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 15:46:00,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.00ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 96.0MB in the end (delta: 892.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 15:46:00,415 INFO L158 Benchmark]: Boogie Preprocessor took 27.93ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 95.1MB in the end (delta: 853.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 15:46:00,415 INFO L158 Benchmark]: IcfgBuilder took 219.18ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 84.4MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 15:46:00,415 INFO L158 Benchmark]: TraceAbstraction took 67708.03ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 83.5MB in the beginning and 1.0GB in the end (delta: -940.7MB). Peak memory consumption was 461.9MB. Max. memory is 16.1GB. [2025-03-17 15:46:00,415 INFO L158 Benchmark]: Witness Printer took 64.10ms. Allocated memory is still 1.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 15:46:00,416 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13ms. Allocated memory is still 201.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.86ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 96.9MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.00ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 96.0MB in the end (delta: 892.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.93ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 95.1MB in the end (delta: 853.0kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 219.18ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 84.4MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 67708.03ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 83.5MB in the beginning and 1.0GB in the end (delta: -940.7MB). Peak memory consumption was 461.9MB. Max. memory is 16.1GB. * Witness Printer took 64.10ms. Allocated memory is still 1.6GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 28 locations, 35 edges, 6 error locations. Started 1 CEGAR loops. OverallTime: 66.9s, OverallIterations: 16, TraceHistogramMax: 110, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1331 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1301 mSDsluCounter, 2840 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2388 mSDsCounter, 328 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3810 IncrementalHoareTripleChecker+Invalid, 4138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 328 mSolverCounterUnsat, 452 mSDtfsCounter, 3810 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5061 GetRequests, 4391 SyntacticMatches, 319 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11653 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=331occurred in iteration=8, InterpolantAutomatonStates: 232, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 168 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 59.4s InterpolantComputationTime, 4814 NumberOfCodeBlocks, 4602 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 6982 ConstructedInterpolants, 0 QuantifiedInterpolants, 16271 SizeOfPredicates, 27 NumberOfNonLiveVariables, 4370 ConjunctsInSsa, 429 ConjunctsInUnsatCore, 38 InterpolantComputations, 6 PerfectInterpolantSequences, 124384/154863 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! [2025-03-17 15:46:00,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE