./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6597d5a31aa324ba443314d2c363b302cd71d697c12811ade53ae3225a095206 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 19:04:40,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 19:04:40,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 19:04:40,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 19:04:40,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 19:04:40,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 19:04:40,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 19:04:40,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 19:04:40,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 19:04:40,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 19:04:40,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 19:04:40,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 19:04:40,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 19:04:40,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 19:04:40,516 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 19:04:40,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 19:04:40,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 19:04:40,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 19:04:40,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 19:04:40,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 19:04:40,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 19:04:40,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 19:04:40,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 19:04:40,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 19:04:40,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 19:04:40,521 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 19:04:40,521 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 19:04:40,521 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 19:04:40,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 19:04:40,521 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 19:04:40,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 19:04:40,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 19:04:40,522 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 19:04:40,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 19:04:40,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:04:40,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 19:04:40,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 19:04:40,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 19:04:40,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 19:04:40,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 19:04:40,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 19:04:40,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 19:04:40,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 19:04:40,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 19:04:40,526 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6597d5a31aa324ba443314d2c363b302cd71d697c12811ade53ae3225a095206 [2024-11-20 19:04:40,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 19:04:40,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 19:04:40,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 19:04:40,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 19:04:40,738 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 19:04:40,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2024-11-20 19:04:41,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 19:04:42,065 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 19:04:42,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2024-11-20 19:04:42,077 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b7aa3bb/8b3b95ff25e44f5582567e959c3e96ca/FLAGae613f971 [2024-11-20 19:04:42,104 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b7aa3bb/8b3b95ff25e44f5582567e959c3e96ca [2024-11-20 19:04:42,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 19:04:42,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 19:04:42,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 19:04:42,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 19:04:42,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 19:04:42,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229c97fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42, skipping insertion in model container [2024-11-20 19:04:42,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 19:04:42,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:04:42,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 19:04:42,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:04:42,326 INFO L204 MainTranslator]: Completed translation [2024-11-20 19:04:42,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42 WrapperNode [2024-11-20 19:04:42,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 19:04:42,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 19:04:42,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 19:04:42,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 19:04:42,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,350 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-20 19:04:42,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 19:04:42,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 19:04:42,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 19:04:42,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 19:04:42,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,360 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,373 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]. [2024-11-20 19:04:42,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 19:04:42,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 19:04:42,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 19:04:42,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 19:04:42,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (1/1) ... [2024-11-20 19:04:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:04:42,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:04:42,407 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) [2024-11-20 19:04:42,409 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 [2024-11-20 19:04:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 19:04:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 19:04:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-20 19:04:42,439 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-20 19:04:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-20 19:04:42,439 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-20 19:04:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 19:04:42,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 19:04:42,482 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 19:04:42,484 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 19:04:42,618 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-20 19:04:42,619 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 19:04:42,630 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 19:04:42,630 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 19:04:42,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:42 BoogieIcfgContainer [2024-11-20 19:04:42,630 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 19:04:42,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 19:04:42,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 19:04:42,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 19:04:42,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:04:42" (1/3) ... [2024-11-20 19:04:42,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e3fa29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:04:42, skipping insertion in model container [2024-11-20 19:04:42,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:04:42" (2/3) ... [2024-11-20 19:04:42,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e3fa29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:04:42, skipping insertion in model container [2024-11-20 19:04:42,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:42" (3/3) ... [2024-11-20 19:04:42,639 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2024-11-20 19:04:42,652 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 19:04:42,653 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-20 19:04:42,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 19:04:42,719 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@707ac3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 19:04:42,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-20 19:04:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 19:04:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-20 19:04:42,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:42,728 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:42,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:42,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2024-11-20 19:04:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731947233] [2024-11-20 19:04:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:04:42,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:42,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731947233] [2024-11-20 19:04:42,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731947233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:42,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:04:42,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:04:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045486525] [2024-11-20 19:04:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:42,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:04:42,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:04:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:04:42,950 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-20 19:04:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:43,059 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-11-20 19:04:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:04:43,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2024-11-20 19:04:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:43,066 INFO L225 Difference]: With dead ends: 83 [2024-11-20 19:04:43,067 INFO L226 Difference]: Without dead ends: 60 [2024-11-20 19:04:43,069 INFO L431 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 [2024-11-20 19:04:43,071 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 29 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:43,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 193 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:04:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-20 19:04:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2024-11-20 19:04:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 48 states have internal predecessors, (54), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 19:04:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2024-11-20 19:04:43,103 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 7 [2024-11-20 19:04:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:43,103 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2024-11-20 19:04:43,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-20 19:04:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2024-11-20 19:04:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-20 19:04:43,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:43,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:43,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 19:04:43,106 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:43,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2024-11-20 19:04:43,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:43,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48023495] [2024-11-20 19:04:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:43,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:04:43,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:43,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48023495] [2024-11-20 19:04:43,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48023495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:43,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:04:43,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 19:04:43,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466402313] [2024-11-20 19:04:43,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:43,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 19:04:43,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 19:04:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 19:04:43,142 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:43,165 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-11-20 19:04:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 19:04:43,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-20 19:04:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:43,169 INFO L225 Difference]: With dead ends: 60 [2024-11-20 19:04:43,169 INFO L226 Difference]: Without dead ends: 58 [2024-11-20 19:04:43,170 INFO L431 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 [2024-11-20 19:04:43,171 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 76 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 [2024-11-20 19:04:43,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 76 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-20 19:04:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-20 19:04:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 19:04:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-20 19:04:43,183 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 13 [2024-11-20 19:04:43,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:43,183 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-20 19:04:43,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-20 19:04:43,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 19:04:43,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:43,184 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:43,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 19:04:43,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:43,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2024-11-20 19:04:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:43,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649535022] [2024-11-20 19:04:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:04:43,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649535022] [2024-11-20 19:04:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649535022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:04:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:04:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018245596] [2024-11-20 19:04:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:43,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:04:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:04:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:04:43,306 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:43,461 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-11-20 19:04:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:04:43,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 19:04:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:43,462 INFO L225 Difference]: With dead ends: 79 [2024-11-20 19:04:43,463 INFO L226 Difference]: Without dead ends: 77 [2024-11-20 19:04:43,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:04:43,464 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:43,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 194 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:04:43,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-20 19:04:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2024-11-20 19:04:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 58 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-20 19:04:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-11-20 19:04:43,474 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 14 [2024-11-20 19:04:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:43,474 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-11-20 19:04:43,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-11-20 19:04:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-20 19:04:43,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:43,478 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:43,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 19:04:43,478 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:43,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:43,479 INFO L85 PathProgramCache]: Analyzing trace with hash -916705293, now seen corresponding path program 1 times [2024-11-20 19:04:43,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:43,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595709061] [2024-11-20 19:04:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:43,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:04:43,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:43,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595709061] [2024-11-20 19:04:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595709061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:43,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:04:43,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 19:04:43,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349976364] [2024-11-20 19:04:43,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:43,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 19:04:43,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 19:04:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 19:04:43,521 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:43,542 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2024-11-20 19:04:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 19:04:43,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-20 19:04:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:43,544 INFO L225 Difference]: With dead ends: 73 [2024-11-20 19:04:43,544 INFO L226 Difference]: Without dead ends: 71 [2024-11-20 19:04:43,544 INFO L431 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 [2024-11-20 19:04:43,545 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:43,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-20 19:04:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-11-20 19:04:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 56 states have internal predecessors, (66), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-20 19:04:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-11-20 19:04:43,553 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 19 [2024-11-20 19:04:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:43,554 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-11-20 19:04:43,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-11-20 19:04:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-20 19:04:43,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:43,554 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:43,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 19:04:43,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:43,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1646907076, now seen corresponding path program 1 times [2024-11-20 19:04:43,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:43,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336812536] [2024-11-20 19:04:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:43,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:04:43,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336812536] [2024-11-20 19:04:43,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336812536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:43,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:04:43,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:04:43,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14072859] [2024-11-20 19:04:43,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:43,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:04:43,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:04:43,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:04:43,657 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:43,710 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2024-11-20 19:04:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:04:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-20 19:04:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:43,711 INFO L225 Difference]: With dead ends: 83 [2024-11-20 19:04:43,711 INFO L226 Difference]: Without dead ends: 23 [2024-11-20 19:04:43,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-20 19:04:43,713 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:43,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 51 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-20 19:04:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-20 19:04:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:04:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-11-20 19:04:43,716 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2024-11-20 19:04:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:43,717 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-11-20 19:04:43,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:04:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-11-20 19:04:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-20 19:04:43,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:43,717 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:43,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 19:04:43,718 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:43,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2024-11-20 19:04:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:43,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939705154] [2024-11-20 19:04:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:43,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:04:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-20 19:04:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:04:43,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:43,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939705154] [2024-11-20 19:04:43,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939705154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:43,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:04:43,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:04:43,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312413941] [2024-11-20 19:04:43,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:43,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:04:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:43,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:04:43,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:04:43,820 INFO L87 Difference]: Start difference. First operand 23 states and 24 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) [2024-11-20 19:04:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:43,859 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-11-20 19:04:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:04:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-20 19:04:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:43,861 INFO L225 Difference]: With dead ends: 37 [2024-11-20 19:04:43,861 INFO L226 Difference]: Without dead ends: 32 [2024-11-20 19:04:43,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:04:43,862 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:43,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 77 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-20 19:04:43,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-20 19:04:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 19:04:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-20 19:04:43,867 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 23 [2024-11-20 19:04:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:43,867 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-20 19:04:43,867 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) [2024-11-20 19:04:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-20 19:04:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 19:04:43,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:43,868 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:43,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 19:04:43,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:43,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2024-11-20 19:04:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:43,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430293959] [2024-11-20 19:04:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:43,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:04:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-20 19:04:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:04:43,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:43,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430293959] [2024-11-20 19:04:43,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430293959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:04:43,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765887175] [2024-11-20 19:04:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:43,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:04:43,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:04:43,971 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) [2024-11-20 19:04:43,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 19:04:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 19:04:44,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:04:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:04:44,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:04:44,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765887175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:44,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:04:44,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-20 19:04:44,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385567183] [2024-11-20 19:04:44,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:44,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:04:44,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:04:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-20 19:04:44,105 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:04:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:44,153 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-11-20 19:04:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:04:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-20 19:04:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:44,154 INFO L225 Difference]: With dead ends: 41 [2024-11-20 19:04:44,154 INFO L226 Difference]: Without dead ends: 25 [2024-11-20 19:04:44,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:04:44,155 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:44,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 58 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-20 19:04:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-20 19:04:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:04:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-20 19:04:44,158 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 24 [2024-11-20 19:04:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:44,158 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-20 19:04:44,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:04:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-20 19:04:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 19:04:44,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:44,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:44,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 19:04:44,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:04:44,364 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash 419176628, now seen corresponding path program 2 times [2024-11-20 19:04:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:44,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766154803] [2024-11-20 19:04:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:04:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 19:04:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:04:44,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:44,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766154803] [2024-11-20 19:04:44,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766154803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:04:44,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759743132] [2024-11-20 19:04:44,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 19:04:44,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:04:44,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:04:44,442 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) [2024-11-20 19:04:44,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 19:04:44,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 19:04:44,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 19:04:44,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 19:04:44,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:04:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:04:44,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:04:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759743132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:44,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:04:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-20 19:04:44,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695593271] [2024-11-20 19:04:44,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:44,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:04:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:04:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:04:44,519 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-20 19:04:44,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:44,530 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-20 19:04:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:04:44,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 24 [2024-11-20 19:04:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:44,531 INFO L225 Difference]: With dead ends: 25 [2024-11-20 19:04:44,531 INFO L226 Difference]: Without dead ends: 24 [2024-11-20 19:04:44,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:04:44,531 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:44,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 52 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-20 19:04:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-20 19:04:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:04:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-20 19:04:44,535 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 24 [2024-11-20 19:04:44,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:44,535 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-20 19:04:44,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-20 19:04:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-20 19:04:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-20 19:04:44,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:44,535 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:44,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 19:04:44,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-20 19:04:44,736 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:44,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash 109573679, now seen corresponding path program 1 times [2024-11-20 19:04:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:44,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022911282] [2024-11-20 19:04:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:04:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 19:04:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:04:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022911282] [2024-11-20 19:04:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022911282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:04:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689709058] [2024-11-20 19:04:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:04:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:04:44,818 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) [2024-11-20 19:04:44,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 19:04:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:44,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 19:04:44,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:04:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:04:44,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:04:44,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689709058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:44,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:04:44,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-20 19:04:44,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239595307] [2024-11-20 19:04:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:44,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:04:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:04:44,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:04:44,894 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-20 19:04:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:44,914 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2024-11-20 19:04:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:04:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 25 [2024-11-20 19:04:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:44,915 INFO L225 Difference]: With dead ends: 28 [2024-11-20 19:04:44,916 INFO L226 Difference]: Without dead ends: 22 [2024-11-20 19:04:44,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:04:44,917 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:44,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-20 19:04:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-20 19:04:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:04:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-11-20 19:04:44,919 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 25 [2024-11-20 19:04:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:44,919 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-11-20 19:04:44,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-20 19:04:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-11-20 19:04:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:04:44,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:04:44,921 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:44,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 19:04:45,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:04:45,122 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-20 19:04:45,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:04:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash -558806060, now seen corresponding path program 1 times [2024-11-20 19:04:45,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:04:45,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194919546] [2024-11-20 19:04:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:04:45,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:04:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:45,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 19:04:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:45,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 19:04:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:04:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 19:04:45,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:04:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194919546] [2024-11-20 19:04:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194919546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:04:45,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:04:45,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:04:45,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717191085] [2024-11-20 19:04:45,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:04:45,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:04:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:04:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:04:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:04:45,184 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-20 19:04:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:04:45,192 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2024-11-20 19:04:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:04:45,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 26 [2024-11-20 19:04:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:04:45,193 INFO L225 Difference]: With dead ends: 22 [2024-11-20 19:04:45,193 INFO L226 Difference]: Without dead ends: 0 [2024-11-20 19:04:45,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:04:45,194 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:04:45,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:04:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-20 19:04:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-20 19:04:45,195 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) [2024-11-20 19:04:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-20 19:04:45,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-11-20 19:04:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:04:45,195 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 19:04:45,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-20 19:04:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-20 19:04:45,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-11-20 19:04:45,198 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-11-20 19:04:45,199 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-11-20 19:04:45,199 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-11-20 19:04:45,199 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-11-20 19:04:45,199 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-11-20 19:04:45,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 19:04:45,201 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:04:45,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-20 19:04:45,287 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 19:04:45,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:04:45 BoogieIcfgContainer [2024-11-20 19:04:45,306 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 19:04:45,306 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 19:04:45,306 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 19:04:45,306 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 19:04:45,307 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:04:42" (3/4) ... [2024-11-20 19:04:45,308 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 19:04:45,312 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-20 19:04:45,312 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-20 19:04:45,317 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-20 19:04:45,317 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-20 19:04:45,317 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 19:04:45,317 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 19:04:45,380 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 19:04:45,380 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 19:04:45,380 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 19:04:45,381 INFO L158 Benchmark]: Toolchain (without parser) took 3273.30ms. Allocated memory is still 197.1MB. Free memory was 168.6MB in the beginning and 116.9MB in the end (delta: 51.6MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2024-11-20 19:04:45,381 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 125.8MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 19:04:45,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.13ms. Allocated memory is still 197.1MB. Free memory was 168.4MB in the beginning and 159.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2024-11-20 19:04:45,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.71ms. Allocated memory is still 197.1MB. Free memory was 159.6MB in the beginning and 158.7MB in the end (delta: 865.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 19:04:45,381 INFO L158 Benchmark]: Boogie Preprocessor took 30.24ms. Allocated memory is still 197.1MB. Free memory was 158.7MB in the beginning and 156.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 19:04:45,382 INFO L158 Benchmark]: RCFGBuilder took 248.47ms. Allocated memory is still 197.1MB. Free memory was 156.6MB in the beginning and 144.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-20 19:04:45,382 INFO L158 Benchmark]: TraceAbstraction took 2671.76ms. Allocated memory is still 197.1MB. Free memory was 143.6MB in the beginning and 121.1MB in the end (delta: 22.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2024-11-20 19:04:45,382 INFO L158 Benchmark]: Witness Printer took 74.37ms. Allocated memory is still 197.1MB. Free memory was 121.1MB in the beginning and 116.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 19:04:45,384 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76ms. Allocated memory is still 125.8MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.13ms. Allocated memory is still 197.1MB. Free memory was 168.4MB in the beginning and 159.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.71ms. Allocated memory is still 197.1MB. Free memory was 159.6MB in the beginning and 158.7MB in the end (delta: 865.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.24ms. Allocated memory is still 197.1MB. Free memory was 158.7MB in the beginning and 156.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.47ms. Allocated memory is still 197.1MB. Free memory was 156.6MB in the beginning and 144.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2671.76ms. Allocated memory is still 197.1MB. Free memory was 143.6MB in the beginning and 121.1MB in the end (delta: 22.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Witness Printer took 74.37ms. Allocated memory is still 197.1MB. Free memory was 121.1MB in the beginning and 116.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: 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 3 procedures, 53 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 892 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 622 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 345 IncrementalHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 270 mSDtfsCounter, 345 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=3, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 15 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 268 NumberOfCodeBlocks, 268 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 555 SizeOfPredicates, 1 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 36/42 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 - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Requires: (n <= 1) Ensures: (((\result == 1) || ((\result == 0) && (n <= 0))) && (n <= 1)) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Requires: (2 == n) Ensures: (2 == n) RESULT: Ultimate proved your program to be correct! [2024-11-20 19:04:45,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE