./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 02:31:45,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 02:31:45,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 02:31:45,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 02:31:45,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 02:31:45,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 02:31:45,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 02:31:45,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 02:31:45,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 02:31:45,143 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 02:31:45,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 02:31:45,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 02:31:45,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 02:31:45,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 02:31:45,144 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 02:31:45,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 02:31:45,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 02:31:45,144 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 02:31:45,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 02:31:45,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 02:31:45,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 02:31:45,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 02:31:45,146 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 02:31:45,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 02:31:45,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:31:45,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:31:45,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:31:45,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:31:45,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 02:31:45,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:31:45,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:31:45,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:31:45,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:31:45,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 02:31:45,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 02:31:45,147 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 02:31:45,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 02:31:45,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 02:31:45,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 02:31:45,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 02:31:45,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 02:31:45,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 02:31:45,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 02:31:45,148 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2025-01-10 02:31:45,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 02:31:45,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 02:31:45,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 02:31:45,438 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 02:31:45,438 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 02:31:45,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-01-10 02:31:46,828 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/69f480b1c/80d72bbc4ebc41359d3bad0969fcd9ac/FLAGc97e9bbd7 [2025-01-10 02:31:47,069 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 02:31:47,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-01-10 02:31:47,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/69f480b1c/80d72bbc4ebc41359d3bad0969fcd9ac/FLAGc97e9bbd7 [2025-01-10 02:31:47,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/69f480b1c/80d72bbc4ebc41359d3bad0969fcd9ac [2025-01-10 02:31:47,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 02:31:47,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 02:31:47,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 02:31:47,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 02:31:47,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 02:31:47,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e537da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47, skipping insertion in model container [2025-01-10 02:31:47,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,145 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 02:31:47,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:31:47,288 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 02:31:47,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:31:47,314 INFO L204 MainTranslator]: Completed translation [2025-01-10 02:31:47,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47 WrapperNode [2025-01-10 02:31:47,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 02:31:47,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 02:31:47,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 02:31:47,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 02:31:47,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,346 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-01-10 02:31:47,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 02:31:47,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 02:31:47,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 02:31:47,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 02:31:47,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,369 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]. [2025-01-10 02:31:47,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 02:31:47,381 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 02:31:47,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 02:31:47,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 02:31:47,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (1/1) ... [2025-01-10 02:31:47,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:31:47,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:47,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 02:31:47,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 02:31:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 02:31:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 02:31:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 02:31:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 02:31:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-01-10 02:31:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-01-10 02:31:47,493 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 02:31:47,494 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 02:31:47,617 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-01-10 02:31:47,619 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 02:31:47,634 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 02:31:47,635 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 02:31:47,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:31:47 BoogieIcfgContainer [2025-01-10 02:31:47,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 02:31:47,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 02:31:47,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 02:31:47,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 02:31:47,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:31:47" (1/3) ... [2025-01-10 02:31:47,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3fa49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:31:47, skipping insertion in model container [2025-01-10 02:31:47,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:47" (2/3) ... [2025-01-10 02:31:47,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3fa49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:31:47, skipping insertion in model container [2025-01-10 02:31:47,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:31:47" (3/3) ... [2025-01-10 02:31:47,648 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2025-01-10 02:31:47,664 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 02:31:47,665 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_10-1.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-01-10 02:31:47,719 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 02:31:47,731 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;@1ecdc2f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 02:31:47,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-10 02:31:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:31:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-10 02:31:47,740 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:47,741 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:47,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:47,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:47,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1842216079, now seen corresponding path program 1 times [2025-01-10 02:31:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:47,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985246522] [2025-01-10 02:31:47,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:47,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 02:31:47,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 02:31:47,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:47,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:31:47,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:47,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985246522] [2025-01-10 02:31:47,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985246522] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:31:47,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:31:47,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 02:31:47,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822552094] [2025-01-10 02:31:47,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:31:47,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 02:31:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:47,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 02:31:47,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 02:31:47,936 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:31:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:47,982 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-01-10 02:31:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 02:31:47,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-10 02:31:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:47,988 INFO L225 Difference]: With dead ends: 38 [2025-01-10 02:31:47,988 INFO L226 Difference]: Without dead ends: 24 [2025-01-10 02:31:47,991 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 [2025-01-10 02:31:47,993 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:47,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:31:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-10 02:31:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-01-10 02:31:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:31:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-01-10 02:31:48,030 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-01-10 02:31:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:48,031 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-01-10 02:31:48,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:31:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-01-10 02:31:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-10 02:31:48,032 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:48,033 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:48,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 02:31:48,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:48,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1274123662, now seen corresponding path program 1 times [2025-01-10 02:31:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:48,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178675080] [2025-01-10 02:31:48,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:48,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 02:31:48,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 02:31:48,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:48,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:31:48,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178675080] [2025-01-10 02:31:48,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178675080] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:31:48,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:31:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:31:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066559524] [2025-01-10 02:31:48,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:31:48,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:31:48,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:48,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:31:48,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:31:48,111 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:31:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:48,180 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-01-10 02:31:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:31:48,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-10 02:31:48,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:48,181 INFO L225 Difference]: With dead ends: 24 [2025-01-10 02:31:48,181 INFO L226 Difference]: Without dead ends: 22 [2025-01-10 02:31:48,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:31:48,182 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:48,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:31:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-10 02:31:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-01-10 02:31:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:31:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-01-10 02:31:48,187 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-01-10 02:31:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:48,188 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-01-10 02:31:48,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 02:31:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-01-10 02:31:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-10 02:31:48,192 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:48,192 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:48,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 02:31:48,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:48,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash 572400255, now seen corresponding path program 1 times [2025-01-10 02:31:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:48,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360519432] [2025-01-10 02:31:48,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:48,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:48,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 02:31:48,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 02:31:48,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:48,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:31:48,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:48,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360519432] [2025-01-10 02:31:48,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360519432] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:31:48,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:31:48,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:31:48,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595722234] [2025-01-10 02:31:48,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:31:48,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:31:48,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:48,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:31:48,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:31:48,409 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:31:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:48,473 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-01-10 02:31:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:31:48,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-01-10 02:31:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:48,475 INFO L225 Difference]: With dead ends: 34 [2025-01-10 02:31:48,475 INFO L226 Difference]: Without dead ends: 32 [2025-01-10 02:31:48,476 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 [2025-01-10 02:31:48,476 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:48,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 65 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:31:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-01-10 02:31:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-01-10 02:31:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-10 02:31:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-01-10 02:31:48,486 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2025-01-10 02:31:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:48,486 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-01-10 02:31:48,487 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) [2025-01-10 02:31:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-01-10 02:31:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-10 02:31:48,490 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:48,490 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:48,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 02:31:48,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:48,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 576376328, now seen corresponding path program 1 times [2025-01-10 02:31:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081858673] [2025-01-10 02:31:48,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:48,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:31:48,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:31:48,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:48,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-10 02:31:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081858673] [2025-01-10 02:31:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081858673] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120136085] [2025-01-10 02:31:48,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:48,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:48,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:48,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:48,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 02:31:48,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 02:31:48,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 02:31:48,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:48,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:48,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 02:31:48,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:31:48,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:31:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:31:48,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120136085] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:31:48,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:31:48,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-01-10 02:31:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657335167] [2025-01-10 02:31:48,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:31:48,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 02:31:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:48,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 02:31:48,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:31:48,989 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:31:49,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:49,414 INFO L93 Difference]: Finished difference Result 126 states and 180 transitions. [2025-01-10 02:31:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 02:31:49,415 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2025-01-10 02:31:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:49,416 INFO L225 Difference]: With dead ends: 126 [2025-01-10 02:31:49,418 INFO L226 Difference]: Without dead ends: 93 [2025-01-10 02:31:49,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:31:49,419 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 113 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:49,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 199 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:31:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-10 02:31:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2025-01-10 02:31:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2025-01-10 02:31:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2025-01-10 02:31:49,438 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2025-01-10 02:31:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:49,439 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2025-01-10 02:31:49,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:31:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2025-01-10 02:31:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-10 02:31:49,440 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:49,440 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:49,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 02:31:49,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:49,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:49,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1418214692, now seen corresponding path program 2 times [2025-01-10 02:31:49,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:49,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012112263] [2025-01-10 02:31:49,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:31:49,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:49,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 02:31:49,664 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:31:49,664 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:31:49,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:31:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:49,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012112263] [2025-01-10 02:31:49,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012112263] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:49,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197209535] [2025-01-10 02:31:49,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:31:49,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:49,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:49,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:49,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 02:31:49,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 02:31:49,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:31:49,829 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:31:49,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:49,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 02:31:49,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:31:49,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:31:49,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197209535] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:31:49,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:31:49,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-01-10 02:31:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69943667] [2025-01-10 02:31:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:31:49,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:31:49,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:49,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:31:49,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:31:49,891 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:31:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:49,930 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2025-01-10 02:31:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:31:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2025-01-10 02:31:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:49,935 INFO L225 Difference]: With dead ends: 101 [2025-01-10 02:31:49,935 INFO L226 Difference]: Without dead ends: 100 [2025-01-10 02:31:49,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:31:49,936 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 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 [2025-01-10 02:31:49,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:31:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-01-10 02:31:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2025-01-10 02:31:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 68 states have internal predecessors, (74), 11 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (39), 15 states have call predecessors, (39), 10 states have call successors, (39) [2025-01-10 02:31:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2025-01-10 02:31:49,959 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 30 [2025-01-10 02:31:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:49,960 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2025-01-10 02:31:49,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:31:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2025-01-10 02:31:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-10 02:31:49,963 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:49,963 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:49,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 02:31:50,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:50,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:50,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1014982419, now seen corresponding path program 1 times [2025-01-10 02:31:50,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:50,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675023986] [2025-01-10 02:31:50,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:50,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:50,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:31:50,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:31:50,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:50,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-10 02:31:50,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675023986] [2025-01-10 02:31:50,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675023986] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:50,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491095222] [2025-01-10 02:31:50,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:50,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:50,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:50,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:50,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 02:31:50,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:31:50,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:31:50,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:50,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:50,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 02:31:50,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:31:50,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:31:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:31:50,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491095222] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:31:50,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:31:50,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-01-10 02:31:50,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941351133] [2025-01-10 02:31:50,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:31:50,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 02:31:50,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:50,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 02:31:50,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:31:50,589 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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) [2025-01-10 02:31:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:51,328 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2025-01-10 02:31:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 02:31:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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 31 [2025-01-10 02:31:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:51,330 INFO L225 Difference]: With dead ends: 287 [2025-01-10 02:31:51,331 INFO L226 Difference]: Without dead ends: 209 [2025-01-10 02:31:51,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2025-01-10 02:31:51,335 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 144 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:51,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 296 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 02:31:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-01-10 02:31:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 175. [2025-01-10 02:31:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 22 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (83), 31 states have call predecessors, (83), 21 states have call successors, (83) [2025-01-10 02:31:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2025-01-10 02:31:51,379 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 31 [2025-01-10 02:31:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:51,379 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2025-01-10 02:31:51,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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) [2025-01-10 02:31:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2025-01-10 02:31:51,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-10 02:31:51,383 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:51,383 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:51,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 02:31:51,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:51,583 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:51,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash -54807044, now seen corresponding path program 1 times [2025-01-10 02:31:51,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468098201] [2025-01-10 02:31:51,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:51,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:51,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-10 02:31:51,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-10 02:31:51,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:51,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-01-10 02:31:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468098201] [2025-01-10 02:31:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468098201] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:31:51,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:31:51,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:31:51,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102489724] [2025-01-10 02:31:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:31:51,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:31:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:51,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:31:51,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:31:51,685 INFO L87 Difference]: Start difference. First operand 175 states and 255 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:31:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:51,730 INFO L93 Difference]: Finished difference Result 189 states and 277 transitions. [2025-01-10 02:31:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:31:51,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2025-01-10 02:31:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:51,733 INFO L225 Difference]: With dead ends: 189 [2025-01-10 02:31:51,733 INFO L226 Difference]: Without dead ends: 188 [2025-01-10 02:31:51,734 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 [2025-01-10 02:31:51,734 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:51,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:31:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-01-10 02:31:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2025-01-10 02:31:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.0909090909090908) internal successors, (156), 142 states have internal predecessors, (156), 23 states have call successors, (23), 6 states have call predecessors, (23), 14 states have return successors, (89), 33 states have call predecessors, (89), 22 states have call successors, (89) [2025-01-10 02:31:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2025-01-10 02:31:51,774 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 50 [2025-01-10 02:31:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:51,775 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2025-01-10 02:31:51,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:31:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2025-01-10 02:31:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-01-10 02:31:51,780 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:51,780 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:51,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 02:31:51,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:51,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1152688629, now seen corresponding path program 1 times [2025-01-10 02:31:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611102103] [2025-01-10 02:31:51,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:51,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-01-10 02:31:51,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-01-10 02:31:51,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:51,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2025-01-10 02:31:51,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611102103] [2025-01-10 02:31:51,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611102103] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859652378] [2025-01-10 02:31:51,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:51,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:51,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:51,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:51,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 02:31:51,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-01-10 02:31:51,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-01-10 02:31:51,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:51,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:51,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:31:51,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 122 proven. 75 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-10 02:31:52,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:31:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 35 proven. 182 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-10 02:31:52,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859652378] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:31:52,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:31:52,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 26 [2025-01-10 02:31:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740760874] [2025-01-10 02:31:52,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:31:52,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 02:31:52,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:52,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 02:31:52,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2025-01-10 02:31:52,422 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (19), 10 states have call predecessors, (19), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-10 02:31:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:53,062 INFO L93 Difference]: Finished difference Result 522 states and 845 transitions. [2025-01-10 02:31:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-10 02:31:53,063 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (19), 10 states have call predecessors, (19), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 83 [2025-01-10 02:31:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:53,066 INFO L225 Difference]: With dead ends: 522 [2025-01-10 02:31:53,066 INFO L226 Difference]: Without dead ends: 355 [2025-01-10 02:31:53,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 147 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2025-01-10 02:31:53,070 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 260 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:53,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 526 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:31:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-01-10 02:31:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 326. [2025-01-10 02:31:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 257 states have (on average 1.0972762645914398) internal successors, (282), 256 states have internal predecessors, (282), 41 states have call successors, (41), 12 states have call predecessors, (41), 26 states have return successors, (121), 57 states have call predecessors, (121), 40 states have call successors, (121) [2025-01-10 02:31:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 444 transitions. [2025-01-10 02:31:53,124 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 444 transitions. Word has length 83 [2025-01-10 02:31:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:53,124 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 444 transitions. [2025-01-10 02:31:53,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (19), 10 states have call predecessors, (19), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-10 02:31:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 444 transitions. [2025-01-10 02:31:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-10 02:31:53,126 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:53,127 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 11, 11, 11, 11, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 02:31:53,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 02:31:53,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-10 02:31:53,327 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:53,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1046022193, now seen corresponding path program 1 times [2025-01-10 02:31:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:53,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391947924] [2025-01-10 02:31:53,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:53,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-10 02:31:53,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-10 02:31:53,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:53,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-01-10 02:31:53,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391947924] [2025-01-10 02:31:53,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391947924] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615133305] [2025-01-10 02:31:53,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:31:53,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:53,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:53,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:53,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 02:31:53,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-10 02:31:53,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-10 02:31:53,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:31:53,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:53,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-10 02:31:53,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 424 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-01-10 02:31:53,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:31:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 280 proven. 165 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-10 02:31:54,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615133305] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:31:54,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:31:54,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 26 [2025-01-10 02:31:54,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50825727] [2025-01-10 02:31:54,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:31:54,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 02:31:54,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:54,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 02:31:54,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2025-01-10 02:31:54,166 INFO L87 Difference]: Start difference. First operand 326 states and 444 transitions. Second operand has 26 states, 25 states have (on average 3.6) internal successors, (90), 16 states have internal predecessors, (90), 13 states have call successors, (19), 12 states have call predecessors, (19), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-10 02:31:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:54,738 INFO L93 Difference]: Finished difference Result 629 states and 894 transitions. [2025-01-10 02:31:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-10 02:31:54,739 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.6) internal successors, (90), 16 states have internal predecessors, (90), 13 states have call successors, (19), 12 states have call predecessors, (19), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 107 [2025-01-10 02:31:54,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:54,743 INFO L225 Difference]: With dead ends: 629 [2025-01-10 02:31:54,743 INFO L226 Difference]: Without dead ends: 324 [2025-01-10 02:31:54,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 179 SyntacticMatches, 21 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=1157, Unknown=0, NotChecked=0, Total=1560 [2025-01-10 02:31:54,748 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 369 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:54,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 180 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:31:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2025-01-10 02:31:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 299. [2025-01-10 02:31:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 235 states have (on average 1.097872340425532) internal successors, (258), 236 states have internal predecessors, (258), 37 states have call successors, (37), 13 states have call predecessors, (37), 25 states have return successors, (75), 49 states have call predecessors, (75), 36 states have call successors, (75) [2025-01-10 02:31:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 370 transitions. [2025-01-10 02:31:54,779 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 370 transitions. Word has length 107 [2025-01-10 02:31:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:54,780 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 370 transitions. [2025-01-10 02:31:54,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.6) internal successors, (90), 16 states have internal predecessors, (90), 13 states have call successors, (19), 12 states have call predecessors, (19), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-10 02:31:54,780 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 370 transitions. [2025-01-10 02:31:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-01-10 02:31:54,782 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:54,782 INFO L218 NwaCegarLoop]: trace histogram [12, 10, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:54,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 02:31:54,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:54,983 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:54,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:54,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1265019303, now seen corresponding path program 2 times [2025-01-10 02:31:54,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:54,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892236272] [2025-01-10 02:31:54,984 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:31:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:54,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-01-10 02:31:55,001 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-01-10 02:31:55,001 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:31:55,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2025-01-10 02:31:55,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:55,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892236272] [2025-01-10 02:31:55,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892236272] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:55,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852941972] [2025-01-10 02:31:55,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:31:55,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:55,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:55,093 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:55,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 02:31:55,124 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-01-10 02:31:55,148 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-01-10 02:31:55,148 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:31:55,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:55,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-10 02:31:55,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 46 proven. 254 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:31:55,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:31:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 9 proven. 286 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 02:31:55,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852941972] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:31:55,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:31:55,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 22, 23] total 26 [2025-01-10 02:31:55,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101169216] [2025-01-10 02:31:55,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:31:55,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 02:31:55,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:55,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 02:31:55,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2025-01-10 02:31:55,831 INFO L87 Difference]: Start difference. First operand 299 states and 370 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 18 states have internal predecessors, (87), 15 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2025-01-10 02:31:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:56,315 INFO L93 Difference]: Finished difference Result 485 states and 613 transitions. [2025-01-10 02:31:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-10 02:31:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 18 states have internal predecessors, (87), 15 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) Word has length 86 [2025-01-10 02:31:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:56,317 INFO L225 Difference]: With dead ends: 485 [2025-01-10 02:31:56,317 INFO L226 Difference]: Without dead ends: 205 [2025-01-10 02:31:56,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 143 SyntacticMatches, 19 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=333, Invalid=927, Unknown=0, NotChecked=0, Total=1260 [2025-01-10 02:31:56,320 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 251 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:56,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 497 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:31:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-01-10 02:31:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2025-01-10 02:31:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 151 states have (on average 1.1456953642384107) internal successors, (173), 152 states have internal predecessors, (173), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (26), 25 states have call predecessors, (26), 24 states have call successors, (26) [2025-01-10 02:31:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 224 transitions. [2025-01-10 02:31:56,332 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 224 transitions. Word has length 86 [2025-01-10 02:31:56,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:56,333 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 224 transitions. [2025-01-10 02:31:56,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 18 states have internal predecessors, (87), 15 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2025-01-10 02:31:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 224 transitions. [2025-01-10 02:31:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-10 02:31:56,334 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:56,334 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 02:31:56,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 02:31:56,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 02:31:56,538 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:56,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash 893038854, now seen corresponding path program 3 times [2025-01-10 02:31:56,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:56,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139044310] [2025-01-10 02:31:56,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:31:56,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:56,544 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 12 equivalence classes. [2025-01-10 02:31:56,549 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 33 of 87 statements. [2025-01-10 02:31:56,549 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 02:31:56,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-01-10 02:31:56,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:56,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139044310] [2025-01-10 02:31:56,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139044310] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:56,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680840131] [2025-01-10 02:31:56,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 02:31:56,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:56,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:56,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:56,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 02:31:56,667 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 12 equivalence classes. [2025-01-10 02:31:56,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 33 of 87 statements. [2025-01-10 02:31:56,677 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 02:31:56,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:56,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:31:56,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2025-01-10 02:31:56,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:31:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2025-01-10 02:31:56,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680840131] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:31:56,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:31:56,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-01-10 02:31:56,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895866567] [2025-01-10 02:31:56,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:31:56,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:31:56,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:56,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:31:56,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:31:56,908 INFO L87 Difference]: Start difference. First operand 191 states and 224 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-10 02:31:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:56,985 INFO L93 Difference]: Finished difference Result 193 states and 224 transitions. [2025-01-10 02:31:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 02:31:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 87 [2025-01-10 02:31:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:56,988 INFO L225 Difference]: With dead ends: 193 [2025-01-10 02:31:56,988 INFO L226 Difference]: Without dead ends: 191 [2025-01-10 02:31:56,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-01-10 02:31:56,989 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:56,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 139 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:31:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-01-10 02:31:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2025-01-10 02:31:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 149 states have (on average 1.1275167785234899) internal successors, (168), 151 states have internal predecessors, (168), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2025-01-10 02:31:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 219 transitions. [2025-01-10 02:31:57,000 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 219 transitions. Word has length 87 [2025-01-10 02:31:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:57,000 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 219 transitions. [2025-01-10 02:31:57,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-10 02:31:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 219 transitions. [2025-01-10 02:31:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-01-10 02:31:57,001 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:57,001 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 10, 10, 10, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-01-10 02:31:57,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 02:31:57,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:57,203 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:57,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash 859485358, now seen corresponding path program 2 times [2025-01-10 02:31:57,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:57,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144845667] [2025-01-10 02:31:57,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:31:57,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:57,213 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-01-10 02:31:57,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-01-10 02:31:57,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:31:57,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 14 proven. 64 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-01-10 02:31:57,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144845667] [2025-01-10 02:31:57,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144845667] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316556866] [2025-01-10 02:31:57,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 02:31:57,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:57,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:57,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:57,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 02:31:57,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-01-10 02:31:57,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-01-10 02:31:57,658 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 02:31:57,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:57,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 02:31:57,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 25 proven. 54 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2025-01-10 02:31:57,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:31:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2025-01-10 02:31:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316556866] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:31:58,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:31:58,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2025-01-10 02:31:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256389240] [2025-01-10 02:31:58,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:31:58,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 02:31:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:31:58,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 02:31:58,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:31:58,147 INFO L87 Difference]: Start difference. First operand 189 states and 219 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2025-01-10 02:31:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:31:58,254 INFO L93 Difference]: Finished difference Result 189 states and 219 transitions. [2025-01-10 02:31:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 02:31:58,255 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) Word has length 119 [2025-01-10 02:31:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:31:58,257 INFO L225 Difference]: With dead ends: 189 [2025-01-10 02:31:58,257 INFO L226 Difference]: Without dead ends: 188 [2025-01-10 02:31:58,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2025-01-10 02:31:58,258 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:31:58,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 115 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:31:58,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-01-10 02:31:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2025-01-10 02:31:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.0604026845637584) internal successors, (158), 150 states have internal predecessors, (158), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2025-01-10 02:31:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2025-01-10 02:31:58,277 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 119 [2025-01-10 02:31:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:31:58,277 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2025-01-10 02:31:58,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2025-01-10 02:31:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2025-01-10 02:31:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-01-10 02:31:58,281 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:31:58,281 INFO L218 NwaCegarLoop]: trace histogram [20, 17, 14, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2025-01-10 02:31:58,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 02:31:58,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:58,482 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:31:58,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:31:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 403519089, now seen corresponding path program 4 times [2025-01-10 02:31:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:31:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022701187] [2025-01-10 02:31:58,483 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:31:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:31:58,491 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 173 statements into 2 equivalence classes. [2025-01-10 02:31:58,515 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 173 of 173 statements. [2025-01-10 02:31:58,516 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 02:31:58,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2025-01-10 02:31:59,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:31:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022701187] [2025-01-10 02:31:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022701187] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:31:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373652859] [2025-01-10 02:31:59,062 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 02:31:59,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:31:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:31:59,064 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:31:59,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 02:31:59,098 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 173 statements into 2 equivalence classes. [2025-01-10 02:31:59,130 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 173 of 173 statements. [2025-01-10 02:31:59,130 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 02:31:59,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:31:59,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-10 02:31:59,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:31:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2025-01-10 02:31:59,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2025-01-10 02:32:00,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373652859] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:00,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:00,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2025-01-10 02:32:00,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878022684] [2025-01-10 02:32:00,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:00,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-10 02:32:00,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:00,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-10 02:32:00,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2025-01-10 02:32:00,552 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2025-01-10 02:32:00,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:00,634 INFO L93 Difference]: Finished difference Result 189 states and 209 transitions. [2025-01-10 02:32:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 02:32:00,635 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 173 [2025-01-10 02:32:00,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:00,636 INFO L225 Difference]: With dead ends: 189 [2025-01-10 02:32:00,637 INFO L226 Difference]: Without dead ends: 188 [2025-01-10 02:32:00,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 332 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2025-01-10 02:32:00,639 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:00,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:32:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-01-10 02:32:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2025-01-10 02:32:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.0402684563758389) internal successors, (155), 150 states have internal predecessors, (155), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2025-01-10 02:32:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 206 transitions. [2025-01-10 02:32:00,653 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 206 transitions. Word has length 173 [2025-01-10 02:32:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:00,653 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 206 transitions. [2025-01-10 02:32:00,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2025-01-10 02:32:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 206 transitions. [2025-01-10 02:32:00,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2025-01-10 02:32:00,658 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:00,658 INFO L218 NwaCegarLoop]: trace histogram [44, 40, 36, 23, 23, 23, 23, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2025-01-10 02:32:00,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 02:32:00,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:00,860 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:00,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash 186525977, now seen corresponding path program 5 times [2025-01-10 02:32:00,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:00,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778598703] [2025-01-10 02:32:00,860 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:32:00,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:00,880 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 416 statements into 32 equivalence classes. [2025-01-10 02:32:00,954 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 416 of 416 statements. [2025-01-10 02:32:00,954 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-01-10 02:32:00,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 911 proven. 1492 refuted. 0 times theorem prover too weak. 3768 trivial. 0 not checked. [2025-01-10 02:32:04,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:04,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778598703] [2025-01-10 02:32:04,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778598703] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:04,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492445021] [2025-01-10 02:32:04,013 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 02:32:04,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:04,015 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:32:04,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 02:32:04,088 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 416 statements into 32 equivalence classes. [2025-01-10 02:32:04,207 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 416 of 416 statements. [2025-01-10 02:32:04,207 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-01-10 02:32:04,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:04,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-01-10 02:32:04,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-01-10 02:32:04,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:32:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-01-10 02:32:11,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492445021] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:32:11,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:32:11,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 29] total 47 [2025-01-10 02:32:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46404883] [2025-01-10 02:32:11,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:32:11,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-10 02:32:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:32:11,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-10 02:32:11,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2025-01-10 02:32:11,300 INFO L87 Difference]: Start difference. First operand 188 states and 206 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2025-01-10 02:32:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:32:11,430 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2025-01-10 02:32:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 02:32:11,431 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) Word has length 416 [2025-01-10 02:32:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:32:11,432 INFO L225 Difference]: With dead ends: 189 [2025-01-10 02:32:11,432 INFO L226 Difference]: Without dead ends: 188 [2025-01-10 02:32:11,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 810 SyntacticMatches, 55 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2583 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=575, Invalid=1875, Unknown=0, NotChecked=0, Total=2450 [2025-01-10 02:32:11,434 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:32:11,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 190 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:32:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-01-10 02:32:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2025-01-10 02:32:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2025-01-10 02:32:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 202 transitions. [2025-01-10 02:32:11,448 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 202 transitions. Word has length 416 [2025-01-10 02:32:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:32:11,449 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 202 transitions. [2025-01-10 02:32:11,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2025-01-10 02:32:11,449 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 202 transitions. [2025-01-10 02:32:11,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2025-01-10 02:32:11,477 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:32:11,478 INFO L218 NwaCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2025-01-10 02:32:11,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 02:32:11,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-10 02:32:11,682 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-01-10 02:32:11,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:32:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1806176246, now seen corresponding path program 6 times [2025-01-10 02:32:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:32:11,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054758683] [2025-01-10 02:32:11,683 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 02:32:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:32:11,717 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1071 statements into 76 equivalence classes. [2025-01-10 02:32:11,954 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-01-10 02:32:11,955 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2025-01-10 02:32:11,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7532 proven. 10068 refuted. 0 times theorem prover too weak. 24334 trivial. 0 not checked. [2025-01-10 02:32:28,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:32:28,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054758683] [2025-01-10 02:32:28,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054758683] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:32:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974308031] [2025-01-10 02:32:28,773 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 02:32:28,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:32:28,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:32:28,774 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:32:28,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 02:32:28,940 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1071 statements into 76 equivalence classes. [2025-01-10 02:32:29,282 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-01-10 02:32:29,282 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2025-01-10 02:32:29,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:32:29,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 217 conjuncts are in the unsatisfiable core [2025-01-10 02:32:29,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:32:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2025-01-10 02:32:30,198 INFO L312 TraceCheckSpWp]: Computing backward predicates...