./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 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 11:28:47,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 11:28:47,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 11:28:47,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 11:28:47,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 11:28:47,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 11:28:47,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 11:28:47,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 11:28:47,940 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 11:28:47,941 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 11:28:47,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 11:28:47,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 11:28:47,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 11:28:47,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 11:28:47,942 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 11:28:47,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 11:28:47,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 11:28:47,942 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 11:28:47,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 11:28:47,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 11:28:47,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 11:28:47,943 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 11:28:47,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 11:28:47,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 11:28:47,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 11:28:47,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:28:47,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 11:28:47,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 11:28:47,944 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 11:28:47,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 11:28:47,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 11:28:47,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 11:28:47,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 11:28:47,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 11:28:47,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 11:28:47,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 11:28:47,945 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2025-03-04 11:28:48,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 11:28:48,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 11:28:48,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 11:28:48,174 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 11:28:48,175 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 11:28:48,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-03-04 11:28:49,257 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c834de33/4cb20946c8354ae5b26cd858b459d117/FLAG5b5c8c5ab [2025-03-04 11:28:49,446 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 11:28:49,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-03-04 11:28:49,456 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c834de33/4cb20946c8354ae5b26cd858b459d117/FLAG5b5c8c5ab [2025-03-04 11:28:49,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c834de33/4cb20946c8354ae5b26cd858b459d117 [2025-03-04 11:28:49,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 11:28:49,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 11:28:49,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 11:28:49,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 11:28:49,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 11:28:49,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3748fba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49, skipping insertion in model container [2025-03-04 11:28:49,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 11:28:49,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:28:49,933 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 11:28:49,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:28:49,953 INFO L204 MainTranslator]: Completed translation [2025-03-04 11:28:49,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49 WrapperNode [2025-03-04 11:28:49,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 11:28:49,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 11:28:49,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 11:28:49,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 11:28:49,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,974 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-03-04 11:28:49,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 11:28:49,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 11:28:49,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 11:28:49,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 11:28:49,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,981 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,991 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 11:28:49,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,994 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:49,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 11:28:49,999 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 11:28:49,999 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 11:28:49,999 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 11:28:50,000 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (1/1) ... [2025-03-04 11:28:50,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:28:50,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:50,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 11:28:50,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 11:28:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 11:28:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 11:28:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 11:28:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 11:28:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-03-04 11:28:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-03-04 11:28:50,086 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 11:28:50,087 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 11:28:50,159 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: havoc #t~ret4;havoc #t~ret5; [2025-03-04 11:28:50,163 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-04 11:28:50,163 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 11:28:50,169 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 11:28:50,169 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 11:28:50,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:28:50 BoogieIcfgContainer [2025-03-04 11:28:50,170 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 11:28:50,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 11:28:50,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 11:28:50,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 11:28:50,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 11:28:49" (1/3) ... [2025-03-04 11:28:50,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75aecd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:28:50, skipping insertion in model container [2025-03-04 11:28:50,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:28:49" (2/3) ... [2025-03-04 11:28:50,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75aecd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:28:50, skipping insertion in model container [2025-03-04 11:28:50,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:28:50" (3/3) ... [2025-03-04 11:28:50,175 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2025-03-04 11:28:50,184 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 11:28:50,185 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. [2025-03-04 11:28:50,216 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 11:28:50,225 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;@52d06dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 11:28:50,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 11:28:50,228 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) [2025-03-04 11:28:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 11:28:50,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:50,232 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:50,233 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:50,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1976054303, now seen corresponding path program 1 times [2025-03-04 11:28:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667746373] [2025-03-04 11:28:50,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:50,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 11:28:50,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 11:28:50,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:50,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:28:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667746373] [2025-03-04 11:28:50,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667746373] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:28:50,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:28:50,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 11:28:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346288806] [2025-03-04 11:28:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:28:50,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 11:28:50,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:50,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 11:28:50,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 11:28:50,359 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) [2025-03-04 11:28:50,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:50,389 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-03-04 11:28:50,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 11:28:50,391 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 [2025-03-04 11:28:50,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:50,394 INFO L225 Difference]: With dead ends: 38 [2025-03-04 11:28:50,394 INFO L226 Difference]: Without dead ends: 24 [2025-03-04 11:28:50,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 11:28:50,398 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 [2025-03-04 11:28:50,398 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] [2025-03-04 11:28:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-04 11:28:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-03-04 11:28:50,416 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) [2025-03-04 11:28:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-03-04 11:28:50,421 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-03-04 11:28:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:50,421 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-03-04 11:28:50,422 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) [2025-03-04 11:28:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-03-04 11:28:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 11:28:50,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:50,422 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:50,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 11:28:50,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:50,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1128141252, now seen corresponding path program 1 times [2025-03-04 11:28:50,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:50,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474601504] [2025-03-04 11:28:50,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:50,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:50,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 11:28:50,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 11:28:50,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:50,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:28:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474601504] [2025-03-04 11:28:50,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474601504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:28:50,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:28:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:28:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14277712] [2025-03-04 11:28:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:28:50,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:28:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:50,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:28:50,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:28:50,486 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) [2025-03-04 11:28:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:50,542 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-03-04 11:28:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:28:50,542 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 [2025-03-04 11:28:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:50,543 INFO L225 Difference]: With dead ends: 24 [2025-03-04 11:28:50,543 INFO L226 Difference]: Without dead ends: 22 [2025-03-04 11:28:50,543 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 [2025-03-04 11:28:50,544 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 [2025-03-04 11:28:50,545 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] [2025-03-04 11:28:50,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-04 11:28:50,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-03-04 11:28:50,550 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) [2025-03-04 11:28:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-03-04 11:28:50,551 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-03-04 11:28:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:50,551 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-03-04 11:28:50,551 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) [2025-03-04 11:28:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-03-04 11:28:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-04 11:28:50,552 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:50,552 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:50,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 11:28:50,552 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:50,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2023302297, now seen corresponding path program 1 times [2025-03-04 11:28:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:50,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528263897] [2025-03-04 11:28:50,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:50,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:50,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 11:28:50,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 11:28:50,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:50,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 11:28:50,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:50,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528263897] [2025-03-04 11:28:50,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528263897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:28:50,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:28:50,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:28:50,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495689834] [2025-03-04 11:28:50,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:28:50,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:28:50,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:50,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:28:50,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:28:50,683 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) [2025-03-04 11:28:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:50,736 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-03-04 11:28:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:28:50,737 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 [2025-03-04 11:28:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:50,737 INFO L225 Difference]: With dead ends: 34 [2025-03-04 11:28:50,737 INFO L226 Difference]: Without dead ends: 32 [2025-03-04 11:28:50,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:28:50,738 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:50,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:28:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-04 11:28:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-03-04 11:28:50,743 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) [2025-03-04 11:28:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-03-04 11:28:50,744 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2025-03-04 11:28:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:50,744 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-03-04 11:28:50,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:28:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-03-04 11:28:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-04 11:28:50,745 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:50,745 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] [2025-03-04 11:28:50,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 11:28:50,745 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:50,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1013164860, now seen corresponding path program 1 times [2025-03-04 11:28:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233408828] [2025-03-04 11:28:50,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:50,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:50,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 11:28:50,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 11:28:50,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:50,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 11:28:50,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233408828] [2025-03-04 11:28:50,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233408828] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155301023] [2025-03-04 11:28:50,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:50,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:50,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:50,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:50,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 11:28:50,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 11:28:50,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 11:28:50,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:50,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:50,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 11:28:50,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:28:50,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 11:28:51,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155301023] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:51,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:51,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-04 11:28:51,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754664841] [2025-03-04 11:28:51,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:51,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 11:28:51,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:51,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 11:28:51,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:28:51,072 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:28:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:51,550 INFO L93 Difference]: Finished difference Result 142 states and 214 transitions. [2025-03-04 11:28:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 11:28:51,550 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2025-03-04 11:28:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:51,552 INFO L225 Difference]: With dead ends: 142 [2025-03-04 11:28:51,552 INFO L226 Difference]: Without dead ends: 109 [2025-03-04 11:28:51,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2025-03-04 11:28:51,553 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 79 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:51,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 244 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:28:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-04 11:28:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2025-03-04 11:28:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 71 states have internal predecessors, (76), 12 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (43), 15 states have call predecessors, (43), 11 states have call successors, (43) [2025-03-04 11:28:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 131 transitions. [2025-03-04 11:28:51,574 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 131 transitions. Word has length 24 [2025-03-04 11:28:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:51,574 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 131 transitions. [2025-03-04 11:28:51,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:28:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 131 transitions. [2025-03-04 11:28:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-04 11:28:51,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:51,576 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:51,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 11:28:51,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:51,778 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:51,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:51,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1779932149, now seen corresponding path program 2 times [2025-03-04 11:28:51,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:51,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106171347] [2025-03-04 11:28:51,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:51,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:51,787 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-04 11:28:51,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 11:28:51,797 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:51,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-04 11:28:51,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:51,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106171347] [2025-03-04 11:28:51,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106171347] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:51,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201988975] [2025-03-04 11:28:51,894 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:51,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:51,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:51,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:51,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 11:28:51,916 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-04 11:28:51,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-04 11:28:51,926 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:51,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:51,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 11:28:51,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-04 11:28:51,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:28:51,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201988975] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:28:51,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:28:51,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-04 11:28:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643911531] [2025-03-04 11:28:51,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:28:51,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:28:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:51,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:28:51,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-04 11:28:51,971 INFO L87 Difference]: Start difference. First operand 90 states and 131 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:28:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:51,999 INFO L93 Difference]: Finished difference Result 98 states and 142 transitions. [2025-03-04 11:28:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:28:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2025-03-04 11:28:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:52,001 INFO L225 Difference]: With dead ends: 98 [2025-03-04 11:28:52,001 INFO L226 Difference]: Without dead ends: 97 [2025-03-04 11:28:52,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-04 11:28:52,002 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:52,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:28:52,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-04 11:28:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2025-03-04 11:28:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 12 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (43), 17 states have call predecessors, (43), 11 states have call successors, (43) [2025-03-04 11:28:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2025-03-04 11:28:52,026 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 42 [2025-03-04 11:28:52,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:52,026 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2025-03-04 11:28:52,026 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) [2025-03-04 11:28:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2025-03-04 11:28:52,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-04 11:28:52,027 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:52,027 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:52,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 11:28:52,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:52,231 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:52,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:52,232 INFO L85 PathProgramCache]: Analyzing trace with hash -213800611, now seen corresponding path program 1 times [2025-03-04 11:28:52,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:52,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543395230] [2025-03-04 11:28:52,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:52,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:52,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 11:28:52,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 11:28:52,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:52,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-04 11:28:52,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543395230] [2025-03-04 11:28:52,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543395230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422664571] [2025-03-04 11:28:52,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:52,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:52,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:52,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:52,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 11:28:52,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 11:28:52,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 11:28:52,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:52,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:52,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 11:28:52,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:28:52,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 11:28:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422664571] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:52,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2025-03-04 11:28:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994249068] [2025-03-04 11:28:52,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:52,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 11:28:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:52,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 11:28:52,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:28:52,629 INFO L87 Difference]: Start difference. First operand 94 states and 135 transitions. Second operand has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:28:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:53,129 INFO L93 Difference]: Finished difference Result 336 states and 540 transitions. [2025-03-04 11:28:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 11:28:53,129 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2025-03-04 11:28:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:53,133 INFO L225 Difference]: With dead ends: 336 [2025-03-04 11:28:53,133 INFO L226 Difference]: Without dead ends: 251 [2025-03-04 11:28:53,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 11:28:53,136 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 226 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:53,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 457 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:28:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-03-04 11:28:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 225. [2025-03-04 11:28:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 177 states have (on average 1.0960451977401129) internal successors, (194), 176 states have internal predecessors, (194), 28 states have call successors, (28), 8 states have call predecessors, (28), 18 states have return successors, (94), 40 states have call predecessors, (94), 27 states have call successors, (94) [2025-03-04 11:28:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2025-03-04 11:28:53,158 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 37 [2025-03-04 11:28:53,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:53,158 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2025-03-04 11:28:53,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.142857142857143) internal successors, (66), 17 states have internal predecessors, (66), 11 states have call successors, (13), 8 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-04 11:28:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2025-03-04 11:28:53,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-04 11:28:53,159 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:53,159 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:53,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 11:28:53,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:53,363 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:53,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1080149815, now seen corresponding path program 1 times [2025-03-04 11:28:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:53,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059576097] [2025-03-04 11:28:53,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:53,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-04 11:28:53,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-04 11:28:53,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:53,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2025-03-04 11:28:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059576097] [2025-03-04 11:28:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059576097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:28:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:28:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 11:28:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14832882] [2025-03-04 11:28:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:28:53,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 11:28:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:53,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 11:28:53,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:28:53,431 INFO L87 Difference]: Start difference. First operand 225 states and 316 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:28:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:53,462 INFO L93 Difference]: Finished difference Result 252 states and 360 transitions. [2025-03-04 11:28:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 11:28:53,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2025-03-04 11:28:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:53,467 INFO L225 Difference]: With dead ends: 252 [2025-03-04 11:28:53,467 INFO L226 Difference]: Without dead ends: 251 [2025-03-04 11:28:53,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 11:28:53,468 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:53,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 75 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:28:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-03-04 11:28:53,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 236. [2025-03-04 11:28:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 186 states have (on average 1.0913978494623655) internal successors, (203), 184 states have internal predecessors, (203), 30 states have call successors, (30), 8 states have call predecessors, (30), 18 states have return successors, (106), 43 states have call predecessors, (106), 29 states have call successors, (106) [2025-03-04 11:28:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 339 transitions. [2025-03-04 11:28:53,502 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 339 transitions. Word has length 56 [2025-03-04 11:28:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:53,502 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 339 transitions. [2025-03-04 11:28:53,502 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) [2025-03-04 11:28:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 339 transitions. [2025-03-04 11:28:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-04 11:28:53,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:53,507 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:53,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 11:28:53,508 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:53,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:53,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1582837461, now seen corresponding path program 1 times [2025-03-04 11:28:53,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:53,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151356048] [2025-03-04 11:28:53,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:53,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-04 11:28:53,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-04 11:28:53,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:53,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2025-03-04 11:28:53,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:53,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151356048] [2025-03-04 11:28:53,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151356048] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:53,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728511659] [2025-03-04 11:28:53,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:53,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:53,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:53,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 11:28:53,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-04 11:28:53,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-04 11:28:53,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:53,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:53,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:28:53,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 80 proven. 108 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-04 11:28:53,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 189 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 11:28:54,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728511659] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:54,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:54,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 26 [2025-03-04 11:28:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530255727] [2025-03-04 11:28:54,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:54,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 11:28:54,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:54,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 11:28:54,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2025-03-04 11:28:54,074 INFO L87 Difference]: Start difference. First operand 236 states and 339 transitions. Second operand has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-04 11:28:54,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:54,588 INFO L93 Difference]: Finished difference Result 597 states and 926 transitions. [2025-03-04 11:28:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-04 11:28:54,589 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 74 [2025-03-04 11:28:54,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:54,591 INFO L225 Difference]: With dead ends: 597 [2025-03-04 11:28:54,591 INFO L226 Difference]: Without dead ends: 382 [2025-03-04 11:28:54,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 125 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2025-03-04 11:28:54,595 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 325 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:54,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 473 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:28:54,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2025-03-04 11:28:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 350. [2025-03-04 11:28:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 276 states have (on average 1.0978260869565217) internal successors, (303), 275 states have internal predecessors, (303), 44 states have call successors, (44), 13 states have call predecessors, (44), 28 states have return successors, (131), 61 states have call predecessors, (131), 43 states have call successors, (131) [2025-03-04 11:28:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 478 transitions. [2025-03-04 11:28:54,626 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 478 transitions. Word has length 74 [2025-03-04 11:28:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:54,627 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 478 transitions. [2025-03-04 11:28:54,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.625) internal successors, (87), 18 states have internal predecessors, (87), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-04 11:28:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 478 transitions. [2025-03-04 11:28:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-04 11:28:54,630 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:54,630 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 11, 11, 11, 11, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:54,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 11:28:54,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:54,836 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:54,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1714387328, now seen corresponding path program 2 times [2025-03-04 11:28:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620580557] [2025-03-04 11:28:54,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:54,842 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 106 statements into 2 equivalence classes. [2025-03-04 11:28:54,849 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 106 of 106 statements. [2025-03-04 11:28:54,850 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:54,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-03-04 11:28:54,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:54,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620580557] [2025-03-04 11:28:54,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620580557] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:54,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621253870] [2025-03-04 11:28:54,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:54,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:54,933 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:54,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 11:28:54,958 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 106 statements into 2 equivalence classes. [2025-03-04 11:28:54,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 106 of 106 statements. [2025-03-04 11:28:54,980 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:54,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:54,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 11:28:54,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 198 proven. 234 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-04 11:28:55,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 58 proven. 394 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-04 11:28:55,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621253870] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:55,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:55,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 27 [2025-03-04 11:28:55,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674065521] [2025-03-04 11:28:55,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:55,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-04 11:28:55,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:55,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-04 11:28:55,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2025-03-04 11:28:55,538 INFO L87 Difference]: Start difference. First operand 350 states and 478 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-04 11:28:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:56,057 INFO L93 Difference]: Finished difference Result 743 states and 1075 transitions. [2025-03-04 11:28:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-04 11:28:56,057 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 106 [2025-03-04 11:28:56,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:56,060 INFO L225 Difference]: With dead ends: 743 [2025-03-04 11:28:56,060 INFO L226 Difference]: Without dead ends: 414 [2025-03-04 11:28:56,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 178 SyntacticMatches, 20 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2025-03-04 11:28:56,063 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 371 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:56,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 547 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 11:28:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-03-04 11:28:56,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 380. [2025-03-04 11:28:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 300 states have (on average 1.0966666666666667) internal successors, (329), 298 states have internal predecessors, (329), 48 states have call successors, (48), 14 states have call predecessors, (48), 30 states have return successors, (142), 67 states have call predecessors, (142), 47 states have call successors, (142) [2025-03-04 11:28:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 519 transitions. [2025-03-04 11:28:56,102 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 519 transitions. Word has length 106 [2025-03-04 11:28:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:56,103 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 519 transitions. [2025-03-04 11:28:56,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-04 11:28:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 519 transitions. [2025-03-04 11:28:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 11:28:56,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:56,104 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 11:28:56,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 11:28:56,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:56,305 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:56,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:56,305 INFO L85 PathProgramCache]: Analyzing trace with hash 334736119, now seen corresponding path program 1 times [2025-03-04 11:28:56,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:56,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428003598] [2025-03-04 11:28:56,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:56,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:56,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 11:28:56,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 11:28:56,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:56,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 11:28:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428003598] [2025-03-04 11:28:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428003598] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119370925] [2025-03-04 11:28:56,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:28:56,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:56,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:56,596 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:56,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 11:28:56,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 11:28:56,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 11:28:56,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:28:56,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:56,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 11:28:56,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 11:28:56,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 227 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 11:28:56,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119370925] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:56,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:56,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2025-03-04 11:28:56,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292042818] [2025-03-04 11:28:56,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:56,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 11:28:56,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:56,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 11:28:56,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:28:56,940 INFO L87 Difference]: Start difference. First operand 380 states and 519 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 11:28:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:57,349 INFO L93 Difference]: Finished difference Result 725 states and 1047 transitions. [2025-03-04 11:28:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-04 11:28:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2025-03-04 11:28:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:57,352 INFO L225 Difference]: With dead ends: 725 [2025-03-04 11:28:57,352 INFO L226 Difference]: Without dead ends: 366 [2025-03-04 11:28:57,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 174 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=511, Invalid=1295, Unknown=0, NotChecked=0, Total=1806 [2025-03-04 11:28:57,355 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 561 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:57,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 175 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:28:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2025-03-04 11:28:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 340. [2025-03-04 11:28:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 267 states have (on average 1.0936329588014981) internal successors, (292), 269 states have internal predecessors, (292), 43 states have call successors, (43), 14 states have call predecessors, (43), 28 states have return successors, (84), 56 states have call predecessors, (84), 42 states have call successors, (84) [2025-03-04 11:28:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 419 transitions. [2025-03-04 11:28:57,370 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 419 transitions. Word has length 93 [2025-03-04 11:28:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:57,370 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 419 transitions. [2025-03-04 11:28:57,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 15 states have internal predecessors, (72), 11 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 11:28:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 419 transitions. [2025-03-04 11:28:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 11:28:57,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:57,371 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] [2025-03-04 11:28:57,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 11:28:57,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:57,572 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:57,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1074906584, now seen corresponding path program 2 times [2025-03-04 11:28:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:57,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180235214] [2025-03-04 11:28:57,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:57,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-04 11:28:57,582 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 11:28:57,582 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:57,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-03-04 11:28:57,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:57,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180235214] [2025-03-04 11:28:57,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180235214] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:57,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885269734] [2025-03-04 11:28:57,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 11:28:57,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:57,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:57,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:57,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 11:28:57,691 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-04 11:28:57,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 11:28:57,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 11:28:57,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:57,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 11:28:57,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2025-03-04 11:28:57,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2025-03-04 11:28:57,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885269734] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:57,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:57,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-03-04 11:28:57,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877555388] [2025-03-04 11:28:57,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:57,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 11:28:57,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:57,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 11:28:57,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:28:57,891 INFO L87 Difference]: Start difference. First operand 340 states and 419 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-04 11:28:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:57,985 INFO L93 Difference]: Finished difference Result 350 states and 431 transitions. [2025-03-04 11:28:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:28:57,985 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 [2025-03-04 11:28:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:57,987 INFO L225 Difference]: With dead ends: 350 [2025-03-04 11:28:57,987 INFO L226 Difference]: Without dead ends: 348 [2025-03-04 11:28:57,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2025-03-04 11:28:57,988 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:57,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 159 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:28:57,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-03-04 11:28:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2025-03-04 11:28:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 267 states have (on average 1.0823970037453183) internal successors, (289), 269 states have internal predecessors, (289), 43 states have call successors, (43), 14 states have call predecessors, (43), 28 states have return successors, (84), 56 states have call predecessors, (84), 42 states have call successors, (84) [2025-03-04 11:28:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 416 transitions. [2025-03-04 11:28:58,004 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 416 transitions. Word has length 87 [2025-03-04 11:28:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:58,004 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 416 transitions. [2025-03-04 11:28:58,005 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) [2025-03-04 11:28:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 416 transitions. [2025-03-04 11:28:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-04 11:28:58,007 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:58,007 INFO L218 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 11:28:58,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 11:28:58,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:58,211 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:58,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:58,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1950989099, now seen corresponding path program 3 times [2025-03-04 11:28:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:58,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577759055] [2025-03-04 11:28:58,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:28:58,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:58,216 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 12 equivalence classes. [2025-03-04 11:28:58,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 104 statements. [2025-03-04 11:28:58,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 11:28:58,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-03-04 11:28:58,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577759055] [2025-03-04 11:28:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577759055] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404454295] [2025-03-04 11:28:58,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:28:58,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:58,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:58,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:58,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 11:28:58,304 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 12 equivalence classes. [2025-03-04 11:28:58,312 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 104 statements. [2025-03-04 11:28:58,312 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 11:28:58,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:58,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 11:28:58,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2025-03-04 11:28:58,330 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:28:58,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404454295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:28:58,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:28:58,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2025-03-04 11:28:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575367559] [2025-03-04 11:28:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:28:58,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 11:28:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:58,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 11:28:58,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 11:28:58,332 INFO L87 Difference]: Start difference. First operand 340 states and 416 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 11:28:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:58,376 INFO L93 Difference]: Finished difference Result 536 states and 688 transitions. [2025-03-04 11:28:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 11:28:58,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 104 [2025-03-04 11:28:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:58,378 INFO L225 Difference]: With dead ends: 536 [2025-03-04 11:28:58,378 INFO L226 Difference]: Without dead ends: 217 [2025-03-04 11:28:58,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-04 11:28:58,379 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:58,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:28:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-03-04 11:28:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2025-03-04 11:28:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.1235294117647059) internal successors, (191), 172 states have internal predecessors, (191), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-04 11:28:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 248 transitions. [2025-03-04 11:28:58,388 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 248 transitions. Word has length 104 [2025-03-04 11:28:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:58,388 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 248 transitions. [2025-03-04 11:28:58,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 11:28:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 248 transitions. [2025-03-04 11:28:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-04 11:28:58,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:58,389 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] [2025-03-04 11:28:58,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 11:28:58,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-04 11:28:58,590 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:58,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1753914713, now seen corresponding path program 4 times [2025-03-04 11:28:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:58,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66671141] [2025-03-04 11:28:58,590 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:28:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:58,594 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 119 statements into 2 equivalence classes. [2025-03-04 11:28:58,602 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-03-04 11:28:58,602 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 11:28:58,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-03-04 11:28:58,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:58,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66671141] [2025-03-04 11:28:58,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66671141] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:58,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343515780] [2025-03-04 11:28:58,804 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:28:58,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:58,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:58,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:58,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 11:28:58,829 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 119 statements into 2 equivalence classes. [2025-03-04 11:28:58,846 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-03-04 11:28:58,847 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 11:28:58,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:58,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 11:28:58,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:28:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2025-03-04 11:28:58,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:28:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2025-03-04 11:28:59,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343515780] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:28:59,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:28:59,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 22 [2025-03-04 11:28:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917926936] [2025-03-04 11:28:59,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:28:59,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 11:28:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:28:59,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 11:28:59,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2025-03-04 11:28:59,263 INFO L87 Difference]: Start difference. First operand 215 states and 248 transitions. Second operand has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-04 11:28:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:28:59,310 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2025-03-04 11:28:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 11:28:59,311 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) Word has length 119 [2025-03-04 11:28:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:28:59,312 INFO L225 Difference]: With dead ends: 215 [2025-03-04 11:28:59,312 INFO L226 Difference]: Without dead ends: 214 [2025-03-04 11:28:59,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 227 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:28:59,314 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:28:59,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:28:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-03-04 11:28:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-03-04 11:28:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0588235294117647) internal successors, (180), 171 states have internal predecessors, (180), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-04 11:28:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 237 transitions. [2025-03-04 11:28:59,322 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 237 transitions. Word has length 119 [2025-03-04 11:28:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:28:59,323 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 237 transitions. [2025-03-04 11:28:59,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-04 11:28:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 237 transitions. [2025-03-04 11:28:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-04 11:28:59,324 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:28:59,324 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] [2025-03-04 11:28:59,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 11:28:59,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-04 11:28:59,528 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:28:59,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:28:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 309160204, now seen corresponding path program 3 times [2025-03-04 11:28:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:28:59,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201891492] [2025-03-04 11:28:59,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:28:59,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:28:59,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 173 statements into 17 equivalence classes. [2025-03-04 11:28:59,543 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 173 statements. [2025-03-04 11:28:59,544 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-04 11:28:59,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-03-04 11:28:59,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:28:59,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201891492] [2025-03-04 11:28:59,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201891492] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:28:59,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14348659] [2025-03-04 11:28:59,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 11:28:59,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:28:59,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:28:59,877 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:28:59,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 11:28:59,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 173 statements into 17 equivalence classes. [2025-03-04 11:28:59,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 137 of 173 statements. [2025-03-04 11:28:59,931 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-04 11:28:59,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:28:59,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 11:28:59,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2025-03-04 11:29:00,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2025-03-04 11:29:00,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14348659] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:00,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:00,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2025-03-04 11:29:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949894997] [2025-03-04 11:29:00,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:00,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-04 11:29:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:00,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-04 11:29:00,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2025-03-04 11:29:00,950 INFO L87 Difference]: Start difference. First operand 214 states and 237 transitions. Second operand has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-03-04 11:29:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:01,023 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2025-03-04 11:29:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 11:29:01,023 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) Word has length 173 [2025-03-04 11:29:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:01,025 INFO L225 Difference]: With dead ends: 215 [2025-03-04 11:29:01,025 INFO L226 Difference]: Without dead ends: 214 [2025-03-04 11:29:01,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 330 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2025-03-04 11:29:01,025 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:01,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 118 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:29:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-03-04 11:29:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-03-04 11:29:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.035294117647059) internal successors, (176), 171 states have internal predecessors, (176), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-04 11:29:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 233 transitions. [2025-03-04 11:29:01,033 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 233 transitions. Word has length 173 [2025-03-04 11:29:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:01,033 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 233 transitions. [2025-03-04 11:29:01,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2025-03-04 11:29:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 233 transitions. [2025-03-04 11:29:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2025-03-04 11:29:01,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:01,036 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] [2025-03-04 11:29:01,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:01,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-04 11:29:01,237 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:29:01,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -279767691, now seen corresponding path program 4 times [2025-03-04 11:29:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834665723] [2025-03-04 11:29:01,237 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:29:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:01,249 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 416 statements into 2 equivalence classes. [2025-03-04 11:29:01,283 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 416 of 416 statements. [2025-03-04 11:29:01,283 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 11:29:01,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-03-04 11:29:03,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:03,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834665723] [2025-03-04 11:29:03,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834665723] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:03,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671472372] [2025-03-04 11:29:03,131 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 11:29:03,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:03,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:03,133 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:03,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 11:29:03,183 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 416 statements into 2 equivalence classes. [2025-03-04 11:29:03,240 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 416 of 416 statements. [2025-03-04 11:29:03,240 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 11:29:03,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:03,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-03-04 11:29:03,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2025-03-04 11:29:03,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6171 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2025-03-04 11:29:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671472372] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:08,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2025-03-04 11:29:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950929420] [2025-03-04 11:29:08,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:08,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-04 11:29:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:08,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-04 11:29:08,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2025-03-04 11:29:08,606 INFO L87 Difference]: Start difference. First operand 214 states and 233 transitions. Second operand has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-04 11:29:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:08,683 INFO L93 Difference]: Finished difference Result 215 states and 233 transitions. [2025-03-04 11:29:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 11:29:08,683 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 416 [2025-03-04 11:29:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:08,685 INFO L225 Difference]: With dead ends: 215 [2025-03-04 11:29:08,685 INFO L226 Difference]: Without dead ends: 214 [2025-03-04 11:29:08,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 810 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2025-03-04 11:29:08,686 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:08,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 196 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:29:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-03-04 11:29:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-03-04 11:29:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0176470588235293) internal successors, (173), 171 states have internal predecessors, (173), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-04 11:29:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 230 transitions. [2025-03-04 11:29:08,695 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 230 transitions. Word has length 416 [2025-03-04 11:29:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:08,696 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 230 transitions. [2025-03-04 11:29:08,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-04 11:29:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 230 transitions. [2025-03-04 11:29:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2025-03-04 11:29:08,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:29:08,713 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] [2025-03-04 11:29:08,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 11:29:08,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-04 11:29:08,918 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-04 11:29:08,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:29:08,918 INFO L85 PathProgramCache]: Analyzing trace with hash -417071150, now seen corresponding path program 5 times [2025-03-04 11:29:08,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:29:08,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195023731] [2025-03-04 11:29:08,919 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:29:08,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:29:08,940 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1071 statements into 76 equivalence classes. [2025-03-04 11:29:09,074 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-03-04 11:29:09,075 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-03-04 11:29:09,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7588 proven. 10182 refuted. 0 times theorem prover too weak. 24164 trivial. 0 not checked. [2025-03-04 11:29:22,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:29:22,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195023731] [2025-03-04 11:29:22,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195023731] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:29:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574916885] [2025-03-04 11:29:22,091 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 11:29:22,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:29:22,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:29:22,093 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:29:22,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 11:29:22,218 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1071 statements into 76 equivalence classes. [2025-03-04 11:29:22,460 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) and asserted 1071 of 1071 statements. [2025-03-04 11:29:22,461 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2025-03-04 11:29:22,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:29:22,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 217 conjuncts are in the unsatisfiable core [2025-03-04 11:29:22,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:29:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2025-03-04 11:29:23,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:29:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2025-03-04 11:29:54,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574916885] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:29:54,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:29:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 41] total 61 [2025-03-04 11:29:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046258436] [2025-03-04 11:29:54,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:29:54,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-03-04 11:29:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:29:54,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-03-04 11:29:54,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=853, Invalid=2929, Unknown=0, NotChecked=0, Total=3782 [2025-03-04 11:29:54,507 INFO L87 Difference]: Start difference. First operand 214 states and 230 transitions. Second operand has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2025-03-04 11:29:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:29:54,615 INFO L93 Difference]: Finished difference Result 214 states and 230 transitions. [2025-03-04 11:29:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-04 11:29:54,616 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) Word has length 1071 [2025-03-04 11:29:54,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:29:54,617 INFO L225 Difference]: With dead ends: 214 [2025-03-04 11:29:54,617 INFO L226 Difference]: Without dead ends: 0 [2025-03-04 11:29:54,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2359 GetRequests, 2105 SyntacticMatches, 192 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7608 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=916, Invalid=3116, Unknown=0, NotChecked=0, Total=4032 [2025-03-04 11:29:54,619 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:29:54,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 207 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:29:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-04 11:29:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-04 11:29:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 11:29:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-04 11:29:54,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1071 [2025-03-04 11:29:54,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:29:54,619 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-04 11:29:54,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5901639344262297) internal successors, (158), 62 states have internal predecessors, (158), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2025-03-04 11:29:54,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-04 11:29:54,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-04 11:29:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2025-03-04 11:29:54,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2025-03-04 11:29:54,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2025-03-04 11:29:54,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2025-03-04 11:29:54,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2025-03-04 11:29:54,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2025-03-04 11:29:54,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 11:29:54,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-04 11:29:54,824 INFO L422 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1] [2025-03-04 11:29:54,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-04 11:29:55,714 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 11:29:55,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 11:29:55 BoogieIcfgContainer [2025-03-04 11:29:55,718 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 11:29:55,718 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 11:29:55,718 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 11:29:55,718 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 11:29:55,719 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:28:50" (3/4) ... [2025-03-04 11:29:55,720 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 11:29:55,724 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo [2025-03-04 11:29:55,727 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-04 11:29:55,727 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-04 11:29:55,727 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 11:29:55,727 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 11:29:55,779 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 11:29:55,779 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 11:29:55,779 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 11:29:55,780 INFO L158 Benchmark]: Toolchain (without parser) took 65954.25ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 114.9MB in the beginning and 778.9MB in the end (delta: -664.0MB). Peak memory consumption was 885.6MB. Max. memory is 16.1GB. [2025-03-04 11:29:55,780 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 11:29:55,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 128.12ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 104.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 11:29:55,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.37ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 103.2MB in the end (delta: 970.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 11:29:55,780 INFO L158 Benchmark]: Boogie Preprocessor took 23.80ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 102.3MB in the end (delta: 905.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 11:29:55,781 INFO L158 Benchmark]: IcfgBuilder took 170.71ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 91.5MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 11:29:55,781 INFO L158 Benchmark]: TraceAbstraction took 65546.96ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 91.1MB in the beginning and 783.4MB in the end (delta: -692.3MB). Peak memory consumption was 852.1MB. Max. memory is 16.1GB. [2025-03-04 11:29:55,781 INFO L158 Benchmark]: Witness Printer took 60.75ms. Allocated memory is still 1.7GB. Free memory was 783.4MB in the beginning and 778.9MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 11:29:55,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 128.12ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 104.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.37ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 103.2MB in the end (delta: 970.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.80ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 102.3MB in the end (delta: 905.0kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 170.71ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 91.5MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 65546.96ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 91.1MB in the beginning and 783.4MB in the end (delta: -692.3MB). Peak memory consumption was 852.1MB. Max. memory is 16.1GB. * Witness Printer took 60.75ms. Allocated memory is still 1.7GB. Free memory was 783.4MB in the beginning and 778.9MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 64.6s, OverallIterations: 16, TraceHistogramMax: 110, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1685 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1652 mSDsluCounter, 2996 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2500 mSDsCounter, 394 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3953 IncrementalHoareTripleChecker+Invalid, 4347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 394 mSolverCounterUnsat, 496 mSDtfsCounter, 3953 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5061 GetRequests, 4369 SyntacticMatches, 327 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11745 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=9, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 172 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 57.3s InterpolantComputationTime, 4786 NumberOfCodeBlocks, 4574 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 6948 ConstructedInterpolants, 0 QuantifiedInterpolants, 16288 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4346 ConjunctsInSsa, 437 ConjunctsInUnsatCore, 38 InterpolantComputations, 6 PerfectInterpolantSequences, 123709/154389 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 11:29:55,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE